diff --git a/create-test-boilerplate.js b/create-test-boilerplate.js
new file mode 100644
index 00000000000..bf68258f321
--- /dev/null
+++ b/create-test-boilerplate.js
@@ -0,0 +1,101 @@
+import fs from 'fs';
+import path from 'path';
+import { fileURLToPath } from 'url';
+
+/**
+ * This script creates a test boilerplate file for a move or ability.
+ * @param {string} type - The type of test to create. Either "move" or "ability".
+ * @param {string} fileName - The name of the file to create.
+ * @example npm run create-test move tackle
+ */
+
+// Get the directory name of the current module file
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+// Get the arguments from the command line
+const args = process.argv.slice(2);
+const type = args[0]; // "move" or "ability"
+let fileName = args[1]; // The file name
+
+if (!type || !fileName) {
+    console.error('Please provide both a type ("move" or "ability") and a file name.');
+    process.exit(1);
+}
+
+// Convert fileName from to snake_case if camelCase is given
+fileName = fileName.replace(/([a-z])([A-Z])/g, '$1_$2').toLowerCase();
+
+// Format the description for the test case
+const formattedName = fileName
+    .replace(/_/g, ' ')
+    .replace(/\b\w/g, char => char.toUpperCase());
+
+// Determine the directory based on the type
+let dir;
+let description;
+if (type === 'move') {
+    dir = path.join(__dirname, 'src', 'test', 'moves');
+    description = `Moves - ${formattedName}`;
+} else if (type === 'ability') {
+    dir = path.join(__dirname, 'src', 'test', 'abilities');
+    description = `Abilities - ${formattedName}`;
+} else {
+    console.error('Invalid type. Please use "move" or "ability".');
+    process.exit(1);
+}
+
+// Ensure the directory exists
+if (!fs.existsSync(dir)) {
+    fs.mkdirSync(dir, { recursive: true });
+}
+
+// Create the file with the given name
+const filePath = path.join(dir, `${fileName}.test.ts`);
+
+if (fs.existsSync(filePath)) {
+    console.error(`File "${fileName}.test.ts" already exists.`);
+    process.exit(1);
+}
+
+// Define the content template
+const content = `import { Abilities } from "#enums/abilities";
+import GameManager from "#test/utils/gameManager";
+import { SPLASH_ONLY } from "#test/utils/testUtils";
+import Phaser from "phaser";
+import { afterEach, beforeAll, beforeEach, describe, it } from "vitest";
+
+describe("${description}", () => {
+  let phaserGame: Phaser.Game;
+  let game: GameManager;
+  const TIMEOUT = 20 * 1000;
+
+  beforeAll(() => {
+    phaserGame = new Phaser.Game({
+      type: Phaser.HEADLESS,
+    });
+  });
+
+  afterEach(() => {
+    game.phaseInterceptor.restoreOg();
+  });
+
+  beforeEach(() => {
+    game = new GameManager(phaserGame);
+    game.override
+      .battleType("single")
+      .enemyAbility(Abilities.BALL_FETCH)
+      .enemyMoveset(SPLASH_ONLY);
+  });
+
+  it("test case", async () => {
+    // await game.classicMode.startBattle();
+    // game.move.select();
+  }, TIMEOUT);
+});
+`;
+
+// Write the template content to the file
+fs.writeFileSync(filePath, content, 'utf8');
+
+console.log(`File created at: ${filePath}`);
\ No newline at end of file
diff --git a/package.json b/package.json
index b85ac639a1b..83e82585d1e 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,8 @@
 		"eslint-ci": "eslint .",
 		"docs": "typedoc",
 		"depcruise": "depcruise src",
-		"depcruise:graph": "depcruise src --output-type dot | node dependency-graph.js > dependency-graph.svg"
+		"depcruise:graph": "depcruise src --output-type dot | node dependency-graph.js > dependency-graph.svg",
+		"create-test": "node ./create-test-boilerplate.js"
 	},
 	"devDependencies": {
 		"@eslint/js": "^9.3.0",
diff --git a/public/images/pokemon/exp/shiny/1002b.png b/public/images/pokemon/exp/shiny/1002b.png
deleted file mode 100644
index 85dfb1c4bd6..00000000000
Binary files a/public/images/pokemon/exp/shiny/1002b.png and /dev/null differ
diff --git a/public/images/pokemon/exp/shiny/1002s.png b/public/images/pokemon/exp/shiny/1002s.png
deleted file mode 100644
index 835b3dcd73b..00000000000
Binary files a/public/images/pokemon/exp/shiny/1002s.png and /dev/null differ
diff --git a/public/images/pokemon/exp/shiny/1002sb.png b/public/images/pokemon/exp/shiny/1002sb.png
deleted file mode 100644
index f87e2fc4239..00000000000
Binary files a/public/images/pokemon/exp/shiny/1002sb.png and /dev/null differ
diff --git a/src/data/ability.ts b/src/data/ability.ts
index 3d5b32f4ce8..4d3d32e22fa 100644
--- a/src/data/ability.ts
+++ b/src/data/ability.ts
@@ -8,7 +8,7 @@ import { Weather, WeatherType } from "./weather";
 import { BattlerTag, GroundedTag, GulpMissileTag, SemiInvulnerableTag } from "./battler-tags";
 import { StatusEffect, getNonVolatileStatusEffects, getStatusEffectDescriptor, getStatusEffectHealText } from "./status-effect";
 import { Gender } from "./gender";
-import Move, { AttackMove, MoveCategory, MoveFlags, MoveTarget, FlinchAttr, OneHitKOAttr, HitHealAttr, allMoves, StatusMove, SelfStatusMove, VariablePowerAttr, applyMoveAttrs, IncrementMovePriorityAttr, VariableMoveTypeAttr, RandomMovesetMoveAttr, RandomMoveAttr, NaturePowerAttr, CopyMoveAttr, MoveAttr, MultiHitAttr, ChargeAttr, SacrificialAttr, SacrificialAttrOnHit, NeutralDamageAgainstFlyingTypeMultiplierAttr } from "./move";
+import Move, { AttackMove, MoveCategory, MoveFlags, MoveTarget, FlinchAttr, OneHitKOAttr, HitHealAttr, allMoves, StatusMove, SelfStatusMove, VariablePowerAttr, applyMoveAttrs, IncrementMovePriorityAttr, VariableMoveTypeAttr, RandomMovesetMoveAttr, RandomMoveAttr, NaturePowerAttr, CopyMoveAttr, MoveAttr, MultiHitAttr, ChargeAttr, SacrificialAttr, SacrificialAttrOnHit, NeutralDamageAgainstFlyingTypeMultiplierAttr, FixedDamageAttr } from "./move";
 import { ArenaTagSide, ArenaTrapTag } from "./arena-tag";
 import { Stat, getStatName } from "./pokemon-stat";
 import { BerryModifier, PokemonHeldItemModifier } from "../modifier/modifier";
@@ -475,6 +475,47 @@ export class NonSuperEffectiveImmunityAbAttr extends TypeImmunityAbAttr {
   }
 }
 
+/**
+ * Attribute implementing the effects of {@link https://bulbapedia.bulbagarden.net/wiki/Tera_Shell_(Ability) | Tera Shell}
+ * When the source is at full HP, incoming attacks will have a maximum 0.5x type effectiveness multiplier.
+ * @extends PreDefendAbAttr
+ */
+export class FullHpResistTypeAbAttr extends PreDefendAbAttr {
+  /**
+   * Reduces a type multiplier to 0.5 if the source is at full HP.
+   * @param pokemon {@linkcode Pokemon} the Pokemon with this ability
+   * @param passive n/a
+   * @param simulated n/a (this doesn't change game state)
+   * @param attacker n/a
+   * @param move {@linkcode Move} the move being used on the source
+   * @param cancelled n/a
+   * @param args `[0]` a container for the move's current type effectiveness multiplier
+   * @returns `true` if the move's effectiveness is reduced; `false` otherwise
+   */
+  applyPreDefend(pokemon: Pokemon, passive: boolean, simulated: boolean, attacker: Pokemon, move: Move | null, cancelled: Utils.BooleanHolder | null, args: any[]): boolean | Promise<boolean> {
+    const typeMultiplier = args[0];
+    if (!(typeMultiplier && typeMultiplier instanceof Utils.NumberHolder)) {
+      return false;
+    }
+
+    if (move && move.hasAttr(FixedDamageAttr)) {
+      return false;
+    }
+
+    if (pokemon.isFullHp() && typeMultiplier.value > 0.5) {
+      typeMultiplier.value = 0.5;
+      return true;
+    }
+    return false;
+  }
+
+  getTriggerMessage(pokemon: Pokemon, abilityName: string, ...args: any[]): string {
+    return i18next.t("abilityTriggers:fullHpResistType", {
+      pokemonNameWithAffix: getPokemonNameWithAffix(pokemon)
+    });
+  }
+}
+
 export class PostDefendAbAttr extends AbAttr {
   applyPostDefend(pokemon: Pokemon, passive: boolean, simulated: boolean, attacker: Pokemon, move: Move, hitResult: HitResult | null, args: any[]): boolean | Promise<boolean> {
     return false;
@@ -2387,7 +2428,7 @@ export class PostSummonWeatherSuppressedFormChangeAbAttr extends PostSummonAbAtt
 
 /**
  * Triggers weather-based form change when summoned into an active weather.
- * Used by Forecast.
+ * Used by Forecast and Flower Gift.
  * @extends PostSummonAbAttr
  */
 export class PostSummonFormChangeByWeatherAbAttr extends PostSummonAbAttr {
@@ -2410,7 +2451,10 @@ export class PostSummonFormChangeByWeatherAbAttr extends PostSummonAbAttr {
    * @returns whether the form change was triggered
    */
   applyPostSummon(pokemon: Pokemon, passive: boolean, simulated: boolean, args: any[]): boolean {
-    if (pokemon.species.speciesId === Species.CASTFORM && this.ability === Abilities.FORECAST) {
+    const isCastformWithForecast = (pokemon.species.speciesId === Species.CASTFORM && this.ability === Abilities.FORECAST);
+    const isCherrimWithFlowerGift = (pokemon.species.speciesId === Species.CHERRIM && this.ability === Abilities.FLOWER_GIFT);
+
+    if (isCastformWithForecast || isCherrimWithFlowerGift) {
       if (simulated) {
         return simulated;
       }
@@ -3083,37 +3127,41 @@ export class PostWeatherChangeAbAttr extends AbAttr {
 
 /**
  * Triggers weather-based form change when weather changes.
- * Used by Forecast.
+ * Used by Forecast and Flower Gift.
  * @extends PostWeatherChangeAbAttr
  */
 export class PostWeatherChangeFormChangeAbAttr extends PostWeatherChangeAbAttr {
   private ability: Abilities;
+  private formRevertingWeathers: WeatherType[];
 
-  constructor(ability: Abilities) {
+  constructor(ability: Abilities, formRevertingWeathers: WeatherType[]) {
     super(false);
 
     this.ability = ability;
+    this.formRevertingWeathers = formRevertingWeathers;
   }
 
   /**
    * Calls {@linkcode Arena.triggerWeatherBasedFormChangesToNormal | triggerWeatherBasedFormChangesToNormal} when the
    * weather changed to form-reverting weather, otherwise calls {@linkcode Arena.triggerWeatherBasedFormChanges | triggerWeatherBasedFormChanges}
-   * @param {Pokemon} pokemon the Pokemon that changed the weather
+   * @param {Pokemon} pokemon the Pokemon with this ability
    * @param passive n/a
    * @param weather n/a
    * @param args n/a
    * @returns whether the form change was triggered
    */
   applyPostWeatherChange(pokemon: Pokemon, passive: boolean, simulated: boolean, weather: WeatherType, args: any[]): boolean {
-    if (pokemon.species.speciesId === Species.CASTFORM && this.ability === Abilities.FORECAST) {
+    const isCastformWithForecast = (pokemon.species.speciesId === Species.CASTFORM && this.ability === Abilities.FORECAST);
+    const isCherrimWithFlowerGift = (pokemon.species.speciesId === Species.CHERRIM && this.ability === Abilities.FLOWER_GIFT);
+
+    if (isCastformWithForecast || isCherrimWithFlowerGift) {
       if (simulated) {
         return simulated;
       }
 
-      const formRevertingWeathers: WeatherType[] = [ WeatherType.NONE, WeatherType.SANDSTORM, WeatherType.STRONG_WINDS, WeatherType.FOG ];
       const weatherType = pokemon.scene.arena.weather?.weatherType;
 
-      if (weatherType && formRevertingWeathers.includes(weatherType)) {
+      if (weatherType && this.formRevertingWeathers.includes(weatherType)) {
         pokemon.scene.arena.triggerWeatherBasedFormChangesToNormal();
       } else {
         pokemon.scene.arena.triggerWeatherBasedFormChanges();
@@ -4703,7 +4751,8 @@ function setAbilityRevealed(pokemon: Pokemon): void {
  */
 function getPokemonWithWeatherBasedForms(scene: BattleScene) {
   return scene.getField(true).filter(p =>
-    p.hasAbility(Abilities.FORECAST) && p.species.speciesId === Species.CASTFORM
+    (p.hasAbility(Abilities.FORECAST) && p.species.speciesId === Species.CASTFORM)
+    || (p.hasAbility(Abilities.FLOWER_GIFT) && p.species.speciesId === Species.CHERRIM)
   );
 }
 
@@ -4902,7 +4951,7 @@ export function initAbilities() {
       .attr(UncopiableAbilityAbAttr)
       .attr(NoFusionAbilityAbAttr)
       .attr(PostSummonFormChangeByWeatherAbAttr, Abilities.FORECAST)
-      .attr(PostWeatherChangeFormChangeAbAttr, Abilities.FORECAST),
+      .attr(PostWeatherChangeFormChangeAbAttr, Abilities.FORECAST, [ WeatherType.NONE, WeatherType.SANDSTORM, WeatherType.STRONG_WINDS, WeatherType.FOG ]),
     new Ability(Abilities.STICKY_HOLD, 3)
       .attr(BlockItemTheftAbAttr)
       .bypassFaint()
@@ -5095,8 +5144,10 @@ export function initAbilities() {
       .conditionalAttr(getWeatherCondition(WeatherType.SUNNY || WeatherType.HARSH_SUN), BattleStatMultiplierAbAttr, BattleStat.SPDEF, 1.5)
       .attr(UncopiableAbilityAbAttr)
       .attr(NoFusionAbilityAbAttr)
-      .ignorable()
-      .partial(),
+      .attr(PostSummonFormChangeByWeatherAbAttr, Abilities.FLOWER_GIFT)
+      .attr(PostWeatherChangeFormChangeAbAttr, Abilities.FLOWER_GIFT, [ WeatherType.NONE, WeatherType.SANDSTORM, WeatherType.STRONG_WINDS, WeatherType.FOG, WeatherType.HAIL, WeatherType.HEAVY_RAIN, WeatherType.SNOW, WeatherType.RAIN ])
+      .partial() // Should also boosts stats of ally
+      .ignorable(),
     new Ability(Abilities.BAD_DREAMS, 4)
       .attr(PostTurnHurtIfSleepingAbAttr),
     new Ability(Abilities.PICKPOCKET, 5)
@@ -5761,10 +5812,10 @@ export function initAbilities() {
       .attr(NoTransformAbilityAbAttr)
       .attr(NoFusionAbilityAbAttr),
     new Ability(Abilities.TERA_SHELL, 9)
+      .attr(FullHpResistTypeAbAttr)
       .attr(UncopiableAbilityAbAttr)
       .attr(UnswappableAbilityAbAttr)
-      .ignorable()
-      .unimplemented(),
+      .ignorable(),
     new Ability(Abilities.TERAFORM_ZERO, 9)
       .attr(UncopiableAbilityAbAttr)
       .attr(UnswappableAbilityAbAttr)
diff --git a/src/data/battle-anims.ts b/src/data/battle-anims.ts
index a2f6e41f4ae..da4e7f6a33b 100644
--- a/src/data/battle-anims.ts
+++ b/src/data/battle-anims.ts
@@ -788,10 +788,10 @@ export abstract class BattleAnim {
         targetSprite.pipelineData["tone"] = [ 0.0, 0.0, 0.0, 0.0 ];
         targetSprite.setAngle(0);
         if (!this.isHideUser() && userSprite) {
-          userSprite.setVisible(true);
+          this.user?.getSprite().setVisible(true); // using this.user to fix context loss due to isOppAnim swap (#481)
         }
         if (!this.isHideTarget() && (targetSprite !== userSprite || !this.isHideUser())) {
-          targetSprite.setVisible(true);
+          this.target?.getSprite().setVisible(true); // using this.target to fix context loss due to isOppAnim swap (#481)
         }
         for (const ms of Object.values(spriteCache).flat()) {
           if (ms) {
diff --git a/src/data/battler-tags.ts b/src/data/battler-tags.ts
index a5e1fc2ccd2..b39454b954b 100644
--- a/src/data/battler-tags.ts
+++ b/src/data/battler-tags.ts
@@ -212,7 +212,7 @@ export class TrappedTag extends BattlerTag {
 
   canAdd(pokemon: Pokemon): boolean {
     const isGhost = pokemon.isOfType(Type.GHOST);
-    const isTrapped = pokemon.getTag(BattlerTagType.TRAPPED);
+    const isTrapped = pokemon.getTag(TrappedTag);
 
     return !isTrapped && !isGhost;
   }
@@ -245,6 +245,23 @@ export class TrappedTag extends BattlerTag {
   }
 }
 
+/**
+ * BattlerTag implementing No Retreat's trapping effect.
+ * This is treated separately from other trapping effects to prevent
+ * Ghost-type Pokemon from being able to reuse the move.
+ * @extends TrappedTag
+ */
+class NoRetreatTag extends TrappedTag {
+  constructor(sourceId: number) {
+    super(BattlerTagType.NO_RETREAT, BattlerTagLapseType.CUSTOM, 0, Moves.NO_RETREAT, sourceId);
+  }
+
+  /** overrides {@linkcode TrappedTag.apply}, removing the Ghost-type condition */
+  canAdd(pokemon: Pokemon): boolean {
+    return !pokemon.getTag(TrappedTag);
+  }
+}
+
 /**
  * BattlerTag that represents the {@link https://bulbapedia.bulbagarden.net/wiki/Flinch Flinch} status condition
  */
@@ -868,7 +885,7 @@ export abstract class DamagingTrapTag extends TrappedTag {
   }
 
   canAdd(pokemon: Pokemon): boolean {
-    return !pokemon.isOfType(Type.GHOST) && !pokemon.findTag(t => t instanceof DamagingTrapTag);
+    return !pokemon.getTag(TrappedTag);
   }
 
   lapse(pokemon: Pokemon, lapseType: BattlerTagLapseType): boolean {
@@ -1511,6 +1528,25 @@ export class CritBoostTag extends BattlerTag {
   }
 }
 
+/**
+ * Tag for the effects of Dragon Cheer, which boosts the critical hit ratio of the user's allies.
+ * @extends {CritBoostTag}
+ */
+export class DragonCheerTag extends CritBoostTag {
+  /** The types of the user's ally when the tag is added */
+  public typesOnAdd: Type[];
+
+  constructor() {
+    super(BattlerTagType.CRIT_BOOST, Moves.DRAGON_CHEER);
+  }
+
+  onAdd(pokemon: Pokemon): void {
+    super.onAdd(pokemon);
+
+    this.typesOnAdd = pokemon.getTypes(true);
+  }
+}
+
 export class SaltCuredTag extends BattlerTag {
   private sourceIndex: number;
 
@@ -1868,6 +1904,8 @@ export function getBattlerTag(tagType: BattlerTagType, turnCount: number, source
     return new DrowsyTag();
   case BattlerTagType.TRAPPED:
     return new TrappedTag(tagType, BattlerTagLapseType.CUSTOM, turnCount, sourceMove, sourceId);
+  case BattlerTagType.NO_RETREAT:
+    return new NoRetreatTag(sourceId);
   case BattlerTagType.BIND:
     return new BindTag(turnCount, sourceId);
   case BattlerTagType.WRAP:
@@ -1927,6 +1965,8 @@ export function getBattlerTag(tagType: BattlerTagType, turnCount: number, source
     return new TypeBoostTag(tagType, sourceMove, Type.FIRE, 1.5, false);
   case BattlerTagType.CRIT_BOOST:
     return new CritBoostTag(tagType, sourceMove);
+  case BattlerTagType.DRAGON_CHEER:
+    return new DragonCheerTag();
   case BattlerTagType.ALWAYS_CRIT:
   case BattlerTagType.IGNORE_ACCURACY:
     return new BattlerTag(tagType, BattlerTagLapseType.TURN_END, 2, sourceMove);
diff --git a/src/data/move.ts b/src/data/move.ts
index 1d6d1e9ee3e..c42bb41bfbb 100644
--- a/src/data/move.ts
+++ b/src/data/move.ts
@@ -5889,9 +5889,9 @@ export class SwitchAbilitiesAttr extends MoveEffectAttr {
     target.summonData.ability = tempAbilityId;
 
     user.scene.queueMessage(i18next.t("moveTriggers:swappedAbilitiesWithTarget", {pokemonName: getPokemonNameWithAffix(user)}));
-    // Swaps Forecast from Castform
+    // Swaps Forecast/Flower Gift from Castform/Cherrim
     user.scene.arena.triggerWeatherBasedFormChangesToNormal();
-    // Swaps Forecast to Castform (edge case)
+    // Swaps Forecast/Flower Gift to Castform/Cherrim (edge case)
     user.scene.arena.triggerWeatherBasedFormChanges();
 
     return true;
@@ -6038,6 +6038,57 @@ export class DestinyBondAttr extends MoveEffectAttr {
   }
 }
 
+/**
+ * Attribute to apply a battler tag to the target if they have had their stats boosted this turn.
+ * @extends AddBattlerTagAttr
+ */
+export class AddBattlerTagIfBoostedAttr extends AddBattlerTagAttr {
+  constructor(tag: BattlerTagType) {
+    super(tag, false, false, 2, 5);
+  }
+
+  /**
+   * @param user {@linkcode Pokemon} using this move
+   * @param target {@linkcode Pokemon} target of this move
+   * @param move {@linkcode Move} being used
+   * @param {any[]} args N/A
+   * @returns true
+   */
+  apply(user: Pokemon, target: Pokemon, move: Move, args: any[]): boolean {
+    if (target.turnData.battleStatsIncreased) {
+      super.apply(user, target, move, args);
+    }
+    return true;
+  }
+}
+
+/**
+ * Attribute to apply a status effect to the target if they have had their stats boosted this turn.
+ * @extends MoveEffectAttr
+ */
+export class StatusIfBoostedAttr extends MoveEffectAttr {
+  public effect: StatusEffect;
+
+  constructor(effect: StatusEffect) {
+    super(true, MoveEffectTrigger.HIT);
+    this.effect = effect;
+  }
+
+  /**
+   * @param user {@linkcode Pokemon} using this move
+   * @param target {@linkcode Pokemon} target of this move
+   * @param move {@linkcode Move} N/A
+   * @param {any[]} args N/A
+   * @returns true
+   */
+  apply(user: Pokemon, target: Pokemon, move: Move, args: any[]): boolean {
+    if (target.turnData.battleStatsIncreased) {
+      target.trySetStatus(this.effect, true, user);
+    }
+    return true;
+  }
+}
+
 export class LastResortAttr extends MoveAttr {
   getCondition(): MoveConditionFunc {
     return (user: Pokemon, target: Pokemon, move: Move) => {
@@ -8503,7 +8554,7 @@ export function initMoves() {
       .partial(),
     new SelfStatusMove(Moves.NO_RETREAT, Type.FIGHTING, -1, 5, -1, 0, 8)
       .attr(StatChangeAttr, [ BattleStat.ATK, BattleStat.DEF, BattleStat.SPATK, BattleStat.SPDEF, BattleStat.SPD ], 1, true)
-      .attr(AddBattlerTagAttr, BattlerTagType.TRAPPED, true, false, 1)
+      .attr(AddBattlerTagAttr, BattlerTagType.NO_RETREAT, true, false)
       .condition((user, target, move) => user.getTag(TrappedTag)?.sourceMove !== Moves.NO_RETREAT), // fails if the user is currently trapped by No Retreat
     new StatusMove(Moves.TAR_SHOT, Type.ROCK, 100, 15, -1, 0, 8)
       .attr(StatChangeAttr, BattleStat.SPD, -1)
@@ -8695,10 +8746,10 @@ export function initMoves() {
     new AttackMove(Moves.SKITTER_SMACK, Type.BUG, MoveCategory.PHYSICAL, 70, 90, 10, 100, 0, 8)
       .attr(StatChangeAttr, BattleStat.SPATK, -1),
     new AttackMove(Moves.BURNING_JEALOUSY, Type.FIRE, MoveCategory.SPECIAL, 70, 100, 5, 100, 0, 8)
-      .target(MoveTarget.ALL_NEAR_ENEMIES)
-      .partial(),
+      .attr(StatusIfBoostedAttr, StatusEffect.BURN)
+      .target(MoveTarget.ALL_NEAR_ENEMIES),
     new AttackMove(Moves.LASH_OUT, Type.DARK, MoveCategory.PHYSICAL, 75, 100, 5, -1, 0, 8)
-      .partial(),
+      .attr(MovePowerMultiplierAttr, (user, target, move) => user.turnData.battleStatsDecreased ? 2 : 1),
     new AttackMove(Moves.POLTERGEIST, Type.GHOST, MoveCategory.PHYSICAL, 110, 90, 5, -1, 0, 8)
       .attr(AttackedByItemAttr)
       .makesContact(false),
@@ -9144,12 +9195,11 @@ export function initMoves() {
     new AttackMove(Moves.HARD_PRESS, Type.STEEL, MoveCategory.PHYSICAL, -1, 100, 10, -1, 0, 9)
       .attr(OpponentHighHpPowerAttr, 100),
     new StatusMove(Moves.DRAGON_CHEER, Type.DRAGON, -1, 15, -1, 0, 9)
-      .attr(AddBattlerTagAttr, BattlerTagType.CRIT_BOOST, false, true)
-      .target(MoveTarget.NEAR_ALLY)
-      .partial(),
+      .attr(AddBattlerTagAttr, BattlerTagType.DRAGON_CHEER, false, true)
+      .target(MoveTarget.NEAR_ALLY),
     new AttackMove(Moves.ALLURING_VOICE, Type.FAIRY, MoveCategory.SPECIAL, 80, 100, 10, -1, 0, 9)
-      .soundBased()
-      .partial(),
+      .attr(AddBattlerTagIfBoostedAttr, BattlerTagType.CONFUSED)
+      .soundBased(),
     new AttackMove(Moves.TEMPER_FLARE, Type.FIRE, MoveCategory.PHYSICAL, 75, 100, 10, -1, 0, 9)
       .attr(MovePowerMultiplierAttr, (user, target, move) => user.getLastXMoves(2)[1]?.result === MoveResult.MISS || user.getLastXMoves(2)[1]?.result === MoveResult.FAIL ? 2 : 1),
     new AttackMove(Moves.SUPERCELL_SLAM, Type.ELECTRIC, MoveCategory.PHYSICAL, 100, 95, 15, -1, 0, 9)
diff --git a/src/data/pokemon-forms.ts b/src/data/pokemon-forms.ts
index e4417f8e8bb..1420d8800aa 100644
--- a/src/data/pokemon-forms.ts
+++ b/src/data/pokemon-forms.ts
@@ -359,7 +359,7 @@ export class SpeciesDefaultFormMatchTrigger extends SpeciesFormChangeTrigger {
 
 /**
  * Class used for triggering form changes based on weather.
- * Used by Castform.
+ * Used by Castform and Cherrim.
  * @extends SpeciesFormChangeTrigger
  */
 export class SpeciesFormChangeWeatherTrigger extends SpeciesFormChangeTrigger {
@@ -392,7 +392,7 @@ export class SpeciesFormChangeWeatherTrigger extends SpeciesFormChangeTrigger {
 /**
  * Class used for reverting to the original form when the weather runs out
  * or when the user loses the ability/is suppressed.
- * Used by Castform.
+ * Used by Castform and Cherrim.
  * @extends SpeciesFormChangeTrigger
  */
 export class SpeciesFormChangeRevertWeatherFormTrigger extends SpeciesFormChangeTrigger {
@@ -930,6 +930,11 @@ export const pokemonFormChanges: PokemonFormChanges = {
     new SpeciesFormChange(Species.CASTFORM, "rainy", "", new SpeciesFormChangeActiveTrigger(), true),
     new SpeciesFormChange(Species.CASTFORM, "snowy", "", new SpeciesFormChangeActiveTrigger(), true),
   ],
+  [Species.CHERRIM]: [
+    new SpeciesFormChange(Species.CHERRIM, "overcast", "sunshine", new SpeciesFormChangeWeatherTrigger(Abilities.FLOWER_GIFT, [ WeatherType.SUNNY, WeatherType.HARSH_SUN ]), true),
+    new SpeciesFormChange(Species.CHERRIM, "sunshine", "overcast", new SpeciesFormChangeRevertWeatherFormTrigger(Abilities.FLOWER_GIFT, [ WeatherType.NONE, WeatherType.SANDSTORM, WeatherType.STRONG_WINDS, WeatherType.FOG, WeatherType.HAIL, WeatherType.HEAVY_RAIN, WeatherType.SNOW, WeatherType.RAIN ]), true),
+    new SpeciesFormChange(Species.CHERRIM, "sunshine", "overcast", new SpeciesFormChangeActiveTrigger(), true),
+  ],
 };
 
 export function initPokemonForms() {
diff --git a/src/enums/battler-tag-type.ts b/src/enums/battler-tag-type.ts
index b133b442801..20ceb1b331f 100644
--- a/src/enums/battler-tag-type.ts
+++ b/src/enums/battler-tag-type.ts
@@ -69,5 +69,7 @@ export enum BattlerTagType {
   GULP_MISSILE_ARROKUDA = "GULP_MISSILE_ARROKUDA",
   GULP_MISSILE_PIKACHU = "GULP_MISSILE_PIKACHU",
   BEAK_BLAST_CHARGING = "BEAK_BLAST_CHARGING",
-  SHELL_TRAP = "SHELL_TRAP"
+  SHELL_TRAP = "SHELL_TRAP",
+  DRAGON_CHEER = "DRAGON_CHEER",
+  NO_RETREAT = "NO_RETREAT",
 }
diff --git a/src/field/arena.ts b/src/field/arena.ts
index 7622b9a014f..e8defbd1a8e 100644
--- a/src/field/arena.ts
+++ b/src/field/arena.ts
@@ -339,7 +339,10 @@ export class Arena {
    */
   triggerWeatherBasedFormChanges(): void {
     this.scene.getField(true).forEach( p => {
-      if (p.hasAbility(Abilities.FORECAST) && p.species.speciesId === Species.CASTFORM) {
+      const isCastformWithForecast = (p.hasAbility(Abilities.FORECAST) && p.species.speciesId === Species.CASTFORM);
+      const isCherrimWithFlowerGift = (p.hasAbility(Abilities.FLOWER_GIFT) && p.species.speciesId === Species.CHERRIM);
+
+      if (isCastformWithForecast || isCherrimWithFlowerGift) {
         new ShowAbilityPhase(this.scene, p.getBattlerIndex());
         this.scene.triggerPokemonFormChange(p, SpeciesFormChangeWeatherTrigger);
       }
@@ -351,7 +354,10 @@ export class Arena {
    */
   triggerWeatherBasedFormChangesToNormal(): void {
     this.scene.getField(true).forEach( p => {
-      if (p.hasAbility(Abilities.FORECAST, false, true) && p.species.speciesId === Species.CASTFORM) {
+      const isCastformWithForecast = (p.hasAbility(Abilities.FORECAST, false, true) && p.species.speciesId === Species.CASTFORM);
+      const isCherrimWithFlowerGift = (p.hasAbility(Abilities.FLOWER_GIFT, false, true) && p.species.speciesId === Species.CHERRIM);
+
+      if (isCastformWithForecast || isCherrimWithFlowerGift) {
         new ShowAbilityPhase(this.scene, p.getBattlerIndex());
         return this.scene.triggerPokemonFormChange(p, SpeciesFormChangeRevertWeatherFormTrigger);
       }
diff --git a/src/field/pokemon.ts b/src/field/pokemon.ts
index d23bdc8c92c..b90ef245fe2 100644
--- a/src/field/pokemon.ts
+++ b/src/field/pokemon.ts
@@ -18,11 +18,11 @@ import { Status, StatusEffect, getRandomStatus } from "../data/status-effect";
 import { pokemonEvolutions, pokemonPrevolutions, SpeciesFormEvolution, SpeciesEvolutionCondition, FusionSpeciesFormEvolution } from "../data/pokemon-evolutions";
 import { reverseCompatibleTms, tmSpecies, tmPoolTiers } from "../data/tms";
 import { BattleStat } from "../data/battle-stat";
-import { BattlerTag, BattlerTagLapseType, EncoreTag, GroundedTag, HighestStatBoostTag, TypeImmuneTag, getBattlerTag, SemiInvulnerableTag, TypeBoostTag, ExposedTag } from "../data/battler-tags";
+import { BattlerTag, BattlerTagLapseType, EncoreTag, GroundedTag, HighestStatBoostTag, TypeImmuneTag, getBattlerTag, SemiInvulnerableTag, TypeBoostTag, ExposedTag, DragonCheerTag, CritBoostTag, TrappedTag } from "../data/battler-tags";
 import { WeatherType } from "../data/weather";
 import { TempBattleStat } from "../data/temp-battle-stat";
 import { ArenaTagSide, NoCritTag, WeakenMoveScreenTag } from "../data/arena-tag";
-import { Ability, AbAttr, BattleStatMultiplierAbAttr, BlockCritAbAttr, BonusCritAbAttr, BypassBurnDamageReductionAbAttr, FieldPriorityMoveImmunityAbAttr, IgnoreOpponentStatChangesAbAttr, MoveImmunityAbAttr, PreDefendFullHpEndureAbAttr, ReceivedMoveDamageMultiplierAbAttr, ReduceStatusEffectDurationAbAttr, StabBoostAbAttr, StatusEffectImmunityAbAttr, TypeImmunityAbAttr, WeightMultiplierAbAttr, allAbilities, applyAbAttrs, applyBattleStatMultiplierAbAttrs, applyPreApplyBattlerTagAbAttrs, applyPreAttackAbAttrs, applyPreDefendAbAttrs, applyPreSetStatusAbAttrs, UnsuppressableAbilityAbAttr, SuppressFieldAbilitiesAbAttr, NoFusionAbilityAbAttr, MultCritAbAttr, IgnoreTypeImmunityAbAttr, DamageBoostAbAttr, IgnoreTypeStatusEffectImmunityAbAttr, ConditionalCritAbAttr, applyFieldBattleStatMultiplierAbAttrs, FieldMultiplyBattleStatAbAttr, AddSecondStrikeAbAttr, IgnoreOpponentEvasionAbAttr, UserFieldStatusEffectImmunityAbAttr, UserFieldBattlerTagImmunityAbAttr, BattlerTagImmunityAbAttr, MoveTypeChangeAbAttr } from "../data/ability";
+import { Ability, AbAttr, BattleStatMultiplierAbAttr, BlockCritAbAttr, BonusCritAbAttr, BypassBurnDamageReductionAbAttr, FieldPriorityMoveImmunityAbAttr, IgnoreOpponentStatChangesAbAttr, MoveImmunityAbAttr, PreDefendFullHpEndureAbAttr, ReceivedMoveDamageMultiplierAbAttr, ReduceStatusEffectDurationAbAttr, StabBoostAbAttr, StatusEffectImmunityAbAttr, TypeImmunityAbAttr, WeightMultiplierAbAttr, allAbilities, applyAbAttrs, applyBattleStatMultiplierAbAttrs, applyPreApplyBattlerTagAbAttrs, applyPreAttackAbAttrs, applyPreDefendAbAttrs, applyPreSetStatusAbAttrs, UnsuppressableAbilityAbAttr, SuppressFieldAbilitiesAbAttr, NoFusionAbilityAbAttr, MultCritAbAttr, IgnoreTypeImmunityAbAttr, DamageBoostAbAttr, IgnoreTypeStatusEffectImmunityAbAttr, ConditionalCritAbAttr, applyFieldBattleStatMultiplierAbAttrs, FieldMultiplyBattleStatAbAttr, AddSecondStrikeAbAttr, IgnoreOpponentEvasionAbAttr, UserFieldStatusEffectImmunityAbAttr, UserFieldBattlerTagImmunityAbAttr, BattlerTagImmunityAbAttr, MoveTypeChangeAbAttr, FullHpResistTypeAbAttr, applyCheckTrappedAbAttrs, CheckTrappedAbAttr } from "../data/ability";
 import PokemonData from "../system/pokemon-data";
 import { BattlerIndex } from "../battle";
 import { Mode } from "../ui/ui";
@@ -1210,6 +1210,28 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
     return !!this.getTag(GroundedTag) || (!this.isOfType(Type.FLYING, true, true) && !this.hasAbility(Abilities.LEVITATE) && !this.getTag(BattlerTagType.MAGNET_RISEN) && !this.getTag(SemiInvulnerableTag));
   }
 
+  /**
+   * Determines whether this Pokemon is prevented from running or switching due
+   * to effects from moves and/or abilities.
+   * @param trappedAbMessages `string[]` If defined, ability trigger messages
+   * (e.g. from Shadow Tag) are forwarded through this array.
+   * @param simulated `boolean` if `true`, applies abilities via simulated calls.
+   * @returns
+   */
+  isTrapped(trappedAbMessages: string[] = [], simulated: boolean = true): boolean {
+    if (this.isOfType(Type.GHOST)) {
+      return false;
+    }
+
+    const trappedByAbility = new Utils.BooleanHolder(false);
+
+    this.scene.getEnemyField()!.forEach(enemyPokemon =>
+      applyCheckTrappedAbAttrs(CheckTrappedAbAttr, enemyPokemon, trappedByAbility, this, trappedAbMessages, simulated)
+    );
+
+    return (trappedByAbility.value || !!this.getTag(TrappedTag));
+  }
+
   /**
    * Calculates the type of a move when used by this Pokemon after
    * type-changing move and ability attributes have applied.
@@ -1276,6 +1298,11 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
       }
     }
 
+    // Apply Tera Shell's effect to attacks after all immunities are accounted for
+    if (!ignoreAbility && move.category !== MoveCategory.STATUS) {
+      applyPreDefendAbAttrs(FullHpResistTypeAbAttr, this, source, move, cancelledHolder, simulated, typeMultiplier);
+    }
+
     return (!cancelledHolder.value ? typeMultiplier.value : 0) as TypeDamageMultiplier;
   }
 
@@ -2064,9 +2091,16 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
               critLevel.value += 1;
             }
           }
-          if (source.getTag(BattlerTagType.CRIT_BOOST)) {
-            critLevel.value += 2;
+
+          const critBoostTag = source.getTag(CritBoostTag);
+          if (critBoostTag) {
+            if (critBoostTag instanceof DragonCheerTag) {
+              critLevel.value += critBoostTag.typesOnAdd.includes(Type.DRAGON) ? 2 : 1;
+            } else {
+              critLevel.value += 2;
+            }
           }
+
           console.log(`crit stage: +${critLevel.value}`);
           const critChance = [24, 8, 2, 1][Math.max(0, Math.min(critLevel.value, 3))];
           isCritical = critChance === 1 || !this.scene.randBattleSeedInt(critChance);
@@ -4298,7 +4332,7 @@ export interface TurnMove {
   targets?: BattlerIndex[];
   result: MoveResult;
   virtual?: boolean;
-  turn?: integer;
+  turn?: number;
 }
 
 export interface QueuedMove {
@@ -4310,17 +4344,17 @@ export interface QueuedMove {
 export interface AttackMoveResult {
   move: Moves;
   result: DamageResult;
-  damage: integer;
+  damage: number;
   critical: boolean;
-  sourceId: integer;
+  sourceId: number;
   sourceBattlerIndex: BattlerIndex;
 }
 
 export class PokemonSummonData {
-  public battleStats: integer[] = [ 0, 0, 0, 0, 0, 0, 0 ];
+  public battleStats: number[] = [ 0, 0, 0, 0, 0, 0, 0 ];
   public moveQueue: QueuedMove[] = [];
   public disabledMove: Moves = Moves.NONE;
-  public disabledTurns: integer = 0;
+  public disabledTurns: number = 0;
   public tags: BattlerTag[] = [];
   public abilitySuppressed: boolean = false;
   public abilitiesApplied: Abilities[] = [];
@@ -4330,14 +4364,14 @@ export class PokemonSummonData {
   public ability: Abilities = Abilities.NONE;
   public gender: Gender;
   public fusionGender: Gender;
-  public stats: integer[];
+  public stats: number[];
   public moveset: (PokemonMove | null)[];
   // If not initialized this value will not be populated from save data.
   public types: Type[] = [];
 }
 
 export class PokemonBattleData {
-  public hitCount: integer = 0;
+  public hitCount: number = 0;
   public endured: boolean = false;
   public berriesEaten: BerryType[] = [];
   public abilitiesApplied: Abilities[] = [];
@@ -4346,21 +4380,23 @@ export class PokemonBattleData {
 
 export class PokemonBattleSummonData {
   /** The number of turns the pokemon has passed since entering the battle */
-  public turnCount: integer = 1;
+  public turnCount: number = 1;
   /** The list of moves the pokemon has used since entering the battle */
   public moveHistory: TurnMove[] = [];
 }
 
 export class PokemonTurnData {
-  public flinched: boolean;
-  public acted: boolean;
-  public hitCount: integer;
-  public hitsLeft: integer;
-  public damageDealt: integer = 0;
-  public currDamageDealt: integer = 0;
-  public damageTaken: integer = 0;
+  public flinched: boolean = false;
+  public acted: boolean = false;
+  public hitCount: number;
+  public hitsLeft: number;
+  public damageDealt: number = 0;
+  public currDamageDealt: number = 0;
+  public damageTaken: number = 0;
   public attacksReceived: AttackMoveResult[] = [];
   public order: number;
+  public battleStatsIncreased: boolean = false;
+  public battleStatsDecreased: boolean = false;
 }
 
 export enum AiType {
diff --git a/src/locales/de/dialogue.json b/src/locales/de/dialogue.json
index e5bcb81ce52..8a3dbb8880e 100644
--- a/src/locales/de/dialogue.json
+++ b/src/locales/de/dialogue.json
@@ -1403,19 +1403,19 @@
       "1": "Ich muss dein Potenzial als Trainer und die Stärke der Pokémon sehen, die mit dir kämpfen!",
       "2": "Los geht's! Dies sind meine Gesteins-Pokémon, mein ganzer Stolz!",
       "3": "Gesteins-Pokémon sind einfach die besten!",
-      "4": "Ich muss dein Potenzial als Trainer und die Stärke der Pokémon sehen, die mit dir kämpfen!"
+      "4": "Tag für Tag grabe ich hier nach Fossilien.\n$Die viele Arbeit hat meine Pokémon felsenfest gemacht\nund das wirst du jetzt im Kampf zu spüren bekommen!"
     },
     "victory": {
       "1": "W-was? Das kann nicht sein! Meine total tranierten Pokémon!",
       "2": "…Wir haben die Kontrolle verloren. Beim nächsten Mal fordere ich dich\n$zu einem Fossilien-Ausgrabungswettbewerb heraus.",
       "3": "Mit deinem Können ist es nur natürlich, dass du gewinnst.",
-      "4": "W-was?! Das kann nicht sein! Selbst das war nicht genug?",
-      "5": "Ich habe es vermasselt."
+      "4": "W-was?! Das kann nicht sein! Selbst das war nicht genug?"
     },
     "defeat": {
       "1": "Siehst du? Ich bin stolz auf meinen steinigen Kampfstil!",
       "2": "Danke! Der Kampf hat mir Vertrauen gegeben, dass ich vielleicht meinen Vater besiegen kann!",
-      "3": "Ich fühle mich, als hätte ich gerade einen wirklich hartnäckigen Felsen durchbrochen!"
+      "3": "Na, was sagst du jetzt? Meine felsenfesten Pokémon waren hart genug für dich, was?",
+      "4": "Ich wusste, dass ich gewinnen würde!"
     }
   },
   "morty": {
diff --git a/src/locales/en/ability-trigger.json b/src/locales/en/ability-trigger.json
index 307ab70b85c..4f1d4dac766 100644
--- a/src/locales/en/ability-trigger.json
+++ b/src/locales/en/ability-trigger.json
@@ -12,6 +12,7 @@
   "blockItemTheft": "{{pokemonNameWithAffix}}'s {{abilityName}}\nprevents item theft!",
   "typeImmunityHeal": "{{pokemonNameWithAffix}}'s {{abilityName}}\nrestored its HP a little!",
   "nonSuperEffectiveImmunity": "{{pokemonNameWithAffix}} avoided damage\nwith {{abilityName}}!",
+  "fullHpResistType": "{{pokemonNameWithAffix}} made its shell gleam!\nIt's distorting type matchups!",
   "moveImmunity": "It doesn't affect {{pokemonNameWithAffix}}!",
   "reverseDrain": "{{pokemonNameWithAffix}} sucked up the liquid ooze!",
   "postDefendTypeChange": "{{pokemonNameWithAffix}}'s {{abilityName}}\nmade it the {{typeName}} type!",
diff --git a/src/locales/en/dialogue.json b/src/locales/en/dialogue.json
index 1f8919f11b5..90b03a176d1 100644
--- a/src/locales/en/dialogue.json
+++ b/src/locales/en/dialogue.json
@@ -742,7 +742,7 @@
   "plumeria": {
     "encounter": {
       "1": " ...Hmph. You don't look like anything special to me.",
-      "2": "It takes these dumb Grunts way too long to deal with you kids..",
+      "2": "It takes these dumb Grunts way too long to deal with you kids...",
       "3": "Mess with anyone in Team Skull, and I'll show you how serious I can get."
     },
     "victory": {
@@ -1479,21 +1479,21 @@
       "1_female": "I need to see your potential as a Trainer. And, I'll need to see the toughness of the Pokémon that battle with you!",
       "2": "Here goes! These are my rocking Pokémon, my pride and joy!",
       "3": "Rock-type Pokémon are simply the best!",
-      "4": "I need to see your potential as a Trainer. And, I'll need to see the toughness of the Pokémon that battle with you!",
-      "4_female": "I need to see your potential as a Trainer. And, I'll need to see the toughness of the Pokémon that battle with you!"
+      "4": "Every day, I toughened up my Pokémon by digging up Fossils nonstop.\n$Could I show you how tough I made them in a battle?",
+      "4_female": "Every day, I toughened up my Pokémon by digging up Fossils nonstop.\n$Could I show you how tough I made them in a battle?"
     },
     "victory": {
       "1": "W-what? That can't be! My buffed-up Pokémon!",
       "2": "…We lost control there. Next time I'd like to challenge you to a Fossil-digging race underground.",
       "2_female": "…We lost control there. Next time I'd like to challenge you to a Fossil-digging race underground.",
       "3": "With skill like yours, it's natural for you to win.",
-      "4": "Wh-what?! It can't be! Even that wasn't enough?",
-      "5": "I blew it."
+      "4": "Wh-what?! It can't be! Even that wasn't enough?"
     },
     "defeat": {
       "1": "See? I'm proud of my rocking battle style!",
       "2": "Thanks! The battle gave me confidence that I may be able to beat my dad!",
-      "3": "I feel like I just smashed through a really stubborn boulder!"
+      "3": "See? These are my rocking Pokémon, my pride and joy!",
+      "4": "I knew I would win!"
     }
   },
   "morty": {
diff --git a/src/locales/es/modifier.json b/src/locales/es/modifier.json
index 593b3df2f0f..a94e41a4574 100644
--- a/src/locales/es/modifier.json
+++ b/src/locales/es/modifier.json
@@ -1,3 +1,12 @@
 {
-  "bypassSpeedChanceApply": "¡Gracias {{itemName}} {{pokemonName}} puede tener prioridad!"
-}
\ No newline at end of file
+  "surviveDamageApply": "{{pokemonNameWithAffix}} ha usado {{typeName}} y ha logrado resistir!",
+  "turnHealApply": "{{pokemonNameWithAffix}} ha recuperado unos pocos PS gracias a {{typeName}}!",
+  "hitHealApply": "{{pokemonNameWithAffix}} ha recuperado unos pocos PS gracias a {{typeName}}!",
+  "pokemonInstantReviveApply": "{{pokemonNameWithAffix}} ha sido revivido gracias a su {{typeName}}!",
+  "pokemonResetNegativeStatStageApply": "Las estadísticas bajadas de {{pokemonNameWithAffix}} fueron restauradas gracias a {{typeName}}!",
+  "moneyInterestApply": "Recibiste intereses de ₽{{moneyAmount}}\ngracias a {{typeName}}!",
+  "turnHeldItemTransferApply": "{{pokemonNameWithAffix}}'s {{itemName}} fue absorbido\npor {{pokemonName}}'s {{typeName}}!",
+  "contactHeldItemTransferApply": "{{pokemonNameWithAffix}}'s {{itemName}} fue robado por {{pokemonName}}'s {{typeName}}!",
+  "enemyTurnHealApply": "¡{{pokemonNameWithAffix}}\nrecuperó algunos PS!",
+  "bypassSpeedChanceApply": "¡Gracias a su {{itemName}}, {{pokemonName}} puede tener prioridad!"
+}
diff --git a/src/locales/es/splash-messages.json b/src/locales/es/splash-messages.json
index 90ce3593b89..b1d4820b06e 100644
--- a/src/locales/es/splash-messages.json
+++ b/src/locales/es/splash-messages.json
@@ -3,12 +3,12 @@
   "joinTheDiscord": "¡Únete al Discord!",
   "infiniteLevels": "¡Niveles infinitos!",
   "everythingStacks": "¡Todo se acumula!",
-  "optionalSaveScumming": "¡Trampas guardando (¡opcionales!)!",
+  "optionalSaveScumming": "¡Trampas de guardado opcionales!",
   "biomes": "¡35 biomas!",
   "openSource": "¡Código abierto!",
   "playWithSpeed": "¡Juega a velocidad 5x!",
-  "liveBugTesting": "¡Arreglo de bugs sobre la marcha!",
-  "heavyInfluence": "¡Influencia Alta en RoR2!",
+  "liveBugTesting": "¡Testeo de bugs en directo!",
+  "heavyInfluence": "¡Mucha Influencia de RoR2!",
   "pokemonRiskAndPokemonRain": "¡Pokémon Risk y Pokémon Rain!",
   "nowWithMoreSalt": "¡Con un 33% más de polémica!",
   "infiniteFusionAtHome": "¡Infinite Fusion en casa!",
@@ -17,16 +17,16 @@
   "mubstitute": "¡Mubstituto!",
   "thatsCrazy": "¡De locos!",
   "oranceJuice": "¡Zumo de narancia!",
-  "questionableBalancing": "¡Balance cuestionable!",
+  "questionableBalancing": "¡Cambios en balance cuestionables!",
   "coolShaders": "¡Shaders impresionantes!",
   "aiFree": "¡Libre de IA!",
   "suddenDifficultySpikes": "¡Saltos de dificultad repentinos!",
   "basedOnAnUnfinishedFlashGame": "¡Basado en un juego Flash inacabado!",
-  "moreAddictiveThanIntended": "¡Más adictivo de la cuenta!",
+  "moreAddictiveThanIntended": "¡Más adictivo de lo previsto!",
   "mostlyConsistentSeeds": "¡Semillas CASI consistentes!",
   "achievementPointsDontDoAnything": "¡Los Puntos de Logro no hacen nada!",
   "youDoNotStartAtLevel": "¡No empiezas al nivel 2000!",
-  "dontTalkAboutTheManaphyEggIncident": "¡No hablen del incidente del Huevo Manaphy!",
+  "dontTalkAboutTheManaphyEggIncident": "¡No se habla del Incidente Manaphy!",
   "alsoTryPokengine": "¡Prueba también Pokéngine!",
   "alsoTryEmeraldRogue": "¡Prueba también Emerald Rogue!",
   "alsoTryRadicalRed": "¡Prueba también Radical Red!",
diff --git a/src/locales/es/terrain.json b/src/locales/es/terrain.json
index 9e26dfeeb6e..912f5186180 100644
--- a/src/locales/es/terrain.json
+++ b/src/locales/es/terrain.json
@@ -1 +1,16 @@
-{}
\ No newline at end of file
+{
+  "misty": "Niebla",
+  "mistyStartMessage": "¡La niebla ha envuelto el terreno de combate!",
+  "mistyClearMessage": "La niebla se ha disipado.",
+  "mistyBlockMessage": "¡El campo de niebla ha protegido a {{pokemonNameWithAffix}} ",
+  "electric": "Eléctrico",
+  "electricStartMessage": "¡Se ha formado un campo de corriente eléctrica en el terreno\nde combate!",
+  "electricClearMessage": "El campo de corriente eléctrica ha desaparecido.\t",
+  "grassy": "Hierba",
+  "grassyStartMessage": "¡El terreno de combate se ha cubierto de hierba!",
+  "grassyClearMessage": "La hierba ha desaparecido.",
+  "psychic": "Psíquico",
+  "psychicStartMessage": "¡El terreno de combate se ha vuelto muy extraño!",
+  "psychicClearMessage": "Ha desaparecido la extraña sensación que se percibía en el terreno\nde combate.",
+  "defaultBlockMessage": "¡El campo {{terrainName}} ha protegido a {{pokemonNameWithAffix}} "
+}
diff --git a/src/locales/es/trainer-names.json b/src/locales/es/trainer-names.json
index c6758366db7..ce09a0c9037 100644
--- a/src/locales/es/trainer-names.json
+++ b/src/locales/es/trainer-names.json
@@ -1,7 +1,7 @@
 {
   "brock": "Brock",
   "misty": "Misty",
-  "lt_surge": "Tt. Surge",
+  "lt_surge": "Teniente Surge",
   "erika": "Erika",
   "janine": "Sachiko",
   "sabrina": "Sabrina",
@@ -23,7 +23,7 @@
   "winona": "Alana",
   "tate": "Vito",
   "liza": "Leti",
-  "juan": "Galán",
+  "juan": "Galano",
   "roark": "Roco",
   "gardenia": "Gardenia",
   "maylene": "Brega",
@@ -34,7 +34,7 @@
   "volkner": "Lectro",
   "cilan": "Millo",
   "chili": "Zeo",
-  "cress": "Maiz",
+  "cress": "Maíz",
   "cheren": "Cheren",
   "lenora": "Aloe",
   "roxie": "Hiedra",
@@ -57,7 +57,7 @@
   "nessa": "Cathy",
   "kabu": "Naboru",
   "bea": "Judith",
-  "allister": "Allistair",
+  "allister": "Alistair",
   "opal": "Sally",
   "bede": "Berto",
   "gordie": "Morris",
@@ -123,30 +123,28 @@
   "leon": "Lionel",
   "rival": "Finn",
   "rival_female": "Ivy",
-  "archer": "Archer",
-  "ariana": "Ariana",
-  "proton": "Proton",
+  "archer": "Atlas",
+  "ariana": "Atenea",
+  "proton": "Protón",
   "petrel": "Petrel",
-  "tabitha": "Tabitha",
-  "courtney": "Courtney",
-  "shelly": "Shelly",
-  "matt": "Matt",
-  "mars": "Mars",
-  "jupiter": "Jupiter",
-  "saturn": "Saturn",
-  "zinzolin": "Zinzolin",
-  "rood": "Rood",
-  "xerosic": "Xerosic",
-  "bryony": "Bryony",
+  "tabitha": "Tatiano",
+  "courtney": "Carola",
+  "shelly": "Silvina",
+  "matt": "Matías",
+  "mars": "Venus",
+  "jupiter": "Ceres",
+  "saturn": "Saturno",
+  "zinzolin": "Menek",
+  "rood": "Ruga",
+  "xerosic": "Xero",
+  "bryony": "Begonia",
+  "maxie": "Magno",
+  "archie": "Aquiles",
+  "cyrus": "Helio",
+  "ghetsis": "Ghechis",
+  "lysandre": "Lysson",
   "faba": "Fabio",
-
-  "maxie": "Maxie",
-  "archie": "Archie",
-  "cyrus": "Cyrus",
-  "ghetsis": "Ghetsis",
-  "lysandre": "Lysandre",
   "lusamine": "Samina",
-
   "blue_red_double": "Azul y Rojo",
   "red_blue_double": "Rojo y Azul",
   "tate_liza_double": "Vito y Leti",
diff --git a/src/locales/fr/pokemon-summary.json b/src/locales/fr/pokemon-summary.json
index f0b4f5a474f..01e712c8468 100644
--- a/src/locales/fr/pokemon-summary.json
+++ b/src/locales/fr/pokemon-summary.json
@@ -13,5 +13,32 @@
   "metFragment": {
     "normal": "rencontré au N.{{level}},\n{{biome}}.",
     "apparently": "apparemment rencontré au N.{{level}},\n{{biome}}."
+  },
+  "natureFragment": {
+    "Hardy": "{{nature}}",
+    "Lonely": "{{nature}}",
+    "Brave": "{{nature}}",
+    "Adamant": "{{nature}}",
+    "Naughty": "{{nature}}",
+    "Bold": "{{nature}}",
+    "Docile": "{{nature}}",
+    "Relaxed": "{{nature}}",
+    "Impish": "{{nature}}",
+    "Lax": "{{nature}}",
+    "Timid": "{{nature}}",
+    "Hasty": "{{nature}}",
+    "Serious": "{{nature}}",
+    "Jolly": "{{nature}}",
+    "Naive": "{{nature}}",
+    "Modest": "{{nature}}",
+    "Mild": "{{nature}}",
+    "Quiet": "{{nature}}",
+    "Bashful": "{{nature}}",
+    "Rash": "{{nature}}",
+    "Calm": "{{nature}}",
+    "Gentle": "{{nature}}",
+    "Sassy": "{{nature}}",
+    "Careful": "{{nature}}",
+    "Quirky": "{{nature}}"
   }
-}
\ No newline at end of file
+}
diff --git a/src/locales/ko/achv.json b/src/locales/ko/achv.json
index 8546dff949c..b9fd327ef3b 100644
--- a/src/locales/ko/achv.json
+++ b/src/locales/ko/achv.json
@@ -225,7 +225,7 @@
     "name": "독침붕처럼 쏴라"
   },
   "MONO_GHOST": {
-    "name": "누굴 부를 거야?"
+    "name": "무서운 게 딱 좋아!"
   },
   "MONO_STEEL": {
     "name": "강철 심장"
@@ -265,4 +265,4 @@
     "name": "상성 전문가(였던 것)",
     "description": "거꾸로 배틀 챌린지 모드 클리어."
   }
-}
\ No newline at end of file
+}
diff --git a/src/phases/command-phase.ts b/src/phases/command-phase.ts
index 68ede826d95..9681a6eeee8 100644
--- a/src/phases/command-phase.ts
+++ b/src/phases/command-phase.ts
@@ -1,21 +1,18 @@
-import BattleScene from "#app/battle-scene.js";
-import { TurnCommand, BattleType } from "#app/battle.js";
-import { applyCheckTrappedAbAttrs, CheckTrappedAbAttr } from "#app/data/ability.js";
-import { TrappedTag, EncoreTag } from "#app/data/battler-tags.js";
-import { MoveTargetSet, getMoveTargets } from "#app/data/move.js";
-import { speciesStarters } from "#app/data/pokemon-species.js";
-import { Type } from "#app/data/type.js";
-import { Abilities } from "#app/enums/abilities.js";
-import { BattlerTagType } from "#app/enums/battler-tag-type.js";
-import { Biome } from "#app/enums/biome.js";
-import { Moves } from "#app/enums/moves.js";
-import { PokeballType } from "#app/enums/pokeball.js";
-import { FieldPosition, PlayerPokemon } from "#app/field/pokemon.js";
-import { getPokemonNameWithAffix } from "#app/messages.js";
-import { Command } from "#app/ui/command-ui-handler.js";
-import { Mode } from "#app/ui/ui.js";
+import BattleScene from "#app/battle-scene";
+import { TurnCommand, BattleType } from "#app/battle";
+import { TrappedTag, EncoreTag } from "#app/data/battler-tags";
+import { MoveTargetSet, getMoveTargets } from "#app/data/move";
+import { speciesStarters } from "#app/data/pokemon-species";
+import { Abilities } from "#app/enums/abilities";
+import { BattlerTagType } from "#app/enums/battler-tag-type";
+import { Biome } from "#app/enums/biome";
+import { Moves } from "#app/enums/moves";
+import { PokeballType } from "#app/enums/pokeball";
+import { FieldPosition, PlayerPokemon } from "#app/field/pokemon";
+import { getPokemonNameWithAffix } from "#app/messages";
+import { Command } from "#app/ui/command-ui-handler";
+import { Mode } from "#app/ui/ui";
 import i18next from "i18next";
-import * as Utils from "#app/utils.js";
 import { FieldPhase } from "./field-phase";
 import { SelectTargetPhase } from "./select-target-phase";
 
@@ -77,7 +74,6 @@ export class CommandPhase extends FieldPhase {
 
   handleCommand(command: Command, cursor: integer, ...args: any[]): boolean {
     const playerPokemon = this.scene.getPlayerField()[this.fieldIndex];
-    const enemyField = this.scene.getEnemyField();
     let success: boolean;
 
     switch (command) {
@@ -184,14 +180,9 @@ export class CommandPhase extends FieldPhase {
           this.scene.ui.setMode(Mode.COMMAND, this.fieldIndex);
         }, null, true);
       } else {
-        const trapTag = playerPokemon.findTag(t => t instanceof TrappedTag) as TrappedTag;
-        const trapped = new Utils.BooleanHolder(false);
         const batonPass = isSwitch && args[0] as boolean;
         const trappedAbMessages: string[] = [];
-        if (!batonPass) {
-          enemyField.forEach(enemyPokemon => applyCheckTrappedAbAttrs(CheckTrappedAbAttr, enemyPokemon, trapped, playerPokemon, trappedAbMessages, true));
-        }
-        if (batonPass || (!trapTag && !trapped.value)) {
+        if (batonPass || !playerPokemon.isTrapped(trappedAbMessages)) {
           this.scene.currentBattle.turnCommands[this.fieldIndex] = isSwitch
             ? { command: Command.POKEMON, cursor: cursor, args: args }
             : { command: Command.RUN };
@@ -199,14 +190,27 @@ export class CommandPhase extends FieldPhase {
           if (!isSwitch && this.fieldIndex) {
               this.scene.currentBattle.turnCommands[this.fieldIndex - 1]!.skip = true;
           }
-        } else if (trapTag) {
-          if (trapTag.sourceMove === Moves.INGRAIN && trapTag.sourceId && this.scene.getPokemonById(trapTag.sourceId)?.isOfType(Type.GHOST)) {
-            success = true;
+        } else if (trappedAbMessages.length > 0) {
+          if (!isSwitch) {
+            this.scene.ui.setMode(Mode.MESSAGE);
+          }
+          this.scene.ui.showText(trappedAbMessages[0], null, () => {
+            this.scene.ui.showText("", 0);
+            if (!isSwitch) {
+              this.scene.ui.setMode(Mode.COMMAND, this.fieldIndex);
+            }
+          }, null, true);
+        } else {
+          const trapTag = playerPokemon.getTag(TrappedTag);
+
+          // trapTag should be defined at this point, but just in case...
+          if (!trapTag) {
             this.scene.currentBattle.turnCommands[this.fieldIndex] = isSwitch
               ? { command: Command.POKEMON, cursor: cursor, args: args }
               : { command: Command.RUN };
             break;
           }
+
           if (!isSwitch) {
             this.scene.ui.setMode(Mode.COMMAND, this.fieldIndex);
             this.scene.ui.setMode(Mode.MESSAGE);
@@ -224,16 +228,6 @@ export class CommandPhase extends FieldPhase {
                 this.scene.ui.setMode(Mode.COMMAND, this.fieldIndex);
               }
             }, null, true);
-        } else if (trapped.value && trappedAbMessages.length > 0) {
-          if (!isSwitch) {
-            this.scene.ui.setMode(Mode.MESSAGE);
-          }
-          this.scene.ui.showText(trappedAbMessages[0], null, () => {
-            this.scene.ui.showText("", 0);
-            if (!isSwitch) {
-              this.scene.ui.setMode(Mode.COMMAND, this.fieldIndex);
-            }
-          }, null, true);
         }
       }
       break;
diff --git a/src/phases/enemy-command-phase.ts b/src/phases/enemy-command-phase.ts
index 5277b2666c7..d9bb08d6fae 100644
--- a/src/phases/enemy-command-phase.ts
+++ b/src/phases/enemy-command-phase.ts
@@ -1,9 +1,6 @@
-import BattleScene from "#app/battle-scene.js";
-import { BattlerIndex } from "#app/battle.js";
-import { applyCheckTrappedAbAttrs, CheckTrappedAbAttr } from "#app/data/ability.js";
-import { TrappedTag } from "#app/data/battler-tags.js";
-import { Command } from "#app/ui/command-ui-handler.js";
-import * as Utils from "#app/utils.js";
+import BattleScene from "#app/battle-scene";
+import { BattlerIndex } from "#app/battle";
+import { Command } from "#app/ui/command-ui-handler";
 import { FieldPhase } from "./field-phase";
 
 /**
@@ -45,10 +42,7 @@ export class EnemyCommandPhase extends FieldPhase {
     if (trainer && !enemyPokemon.getMoveQueue().length) {
       const opponents = enemyPokemon.getOpponents();
 
-      const trapTag = enemyPokemon.findTag(t => t instanceof TrappedTag) as TrappedTag;
-      const trapped = new Utils.BooleanHolder(false);
-      opponents.forEach(playerPokemon => applyCheckTrappedAbAttrs(CheckTrappedAbAttr, playerPokemon, trapped, enemyPokemon, [""], true));
-      if (!trapTag && !trapped.value) {
+      if (!enemyPokemon.isTrapped()) {
         const partyMemberScores = trainer.getPartyMemberMatchupScores(enemyPokemon.trainerSlot, true);
 
         if (partyMemberScores.length) {
diff --git a/src/phases/stat-change-phase.ts b/src/phases/stat-change-phase.ts
index 856d0a33eea..3116c49e8ef 100644
--- a/src/phases/stat-change-phase.ts
+++ b/src/phases/stat-change-phase.ts
@@ -1,14 +1,14 @@
-import BattleScene from "#app/battle-scene.js";
-import { BattlerIndex } from "#app/battle.js";
-import { applyPreStatChangeAbAttrs, ProtectStatAbAttr, applyAbAttrs, StatChangeMultiplierAbAttr, StatChangeCopyAbAttr, applyPostStatChangeAbAttrs, PostStatChangeAbAttr } from "#app/data/ability.js";
-import { MistTag, ArenaTagSide } from "#app/data/arena-tag.js";
-import { BattleStat, getBattleStatName, getBattleStatLevelChangeDescription } from "#app/data/battle-stat.js";
-import Pokemon from "#app/field/pokemon.js";
-import { getPokemonNameWithAffix } from "#app/messages.js";
-import { PokemonResetNegativeStatStageModifier } from "#app/modifier/modifier.js";
-import { handleTutorial, Tutorial } from "#app/tutorial.js";
+import { BattlerIndex } from "#app/battle";
+import BattleScene from "#app/battle-scene";
+import { applyAbAttrs, applyPostStatChangeAbAttrs, applyPreStatChangeAbAttrs, PostStatChangeAbAttr, ProtectStatAbAttr, StatChangeCopyAbAttr, StatChangeMultiplierAbAttr } from "#app/data/ability";
+import { ArenaTagSide, MistTag } from "#app/data/arena-tag";
+import { BattleStat, getBattleStatLevelChangeDescription, getBattleStatName } from "#app/data/battle-stat";
+import Pokemon from "#app/field/pokemon";
+import { getPokemonNameWithAffix } from "#app/messages";
+import { PokemonResetNegativeStatStageModifier } from "#app/modifier/modifier";
+import { handleTutorial, Tutorial } from "#app/tutorial";
+import * as Utils from "#app/utils";
 import i18next from "i18next";
-import * as Utils from "#app/utils.js";
 import { PokemonPhase } from "./pokemon-phase";
 
 export type StatChangeCallback = (target: Pokemon | null, changed: BattleStat[], relativeChanges: number[]) => void;
@@ -72,7 +72,7 @@ export class StatChangePhase extends PokemonPhase {
     }
 
     const battleStats = this.getPokemon().summonData.battleStats;
-    const relLevels = filteredStats.map(stat => (levels.value >= 1 ? Math.min(battleStats![stat] + levels.value, 6) : Math.max(battleStats![stat] + levels.value, -6)) - battleStats![stat]);
+    const relLevels = filteredStats.map(stat => (levels.value >= 1 ? Math.min(battleStats[stat] + levels.value, 6) : Math.max(battleStats[stat] + levels.value, -6)) - battleStats[stat]);
 
     this.onChange && this.onChange(this.getPokemon(), filteredStats, relLevels);
 
@@ -85,6 +85,20 @@ export class StatChangePhase extends PokemonPhase {
       }
 
       for (const stat of filteredStats) {
+        if (levels.value > 0 && pokemon.summonData.battleStats[stat] < 6) {
+          if (!pokemon.turnData) {
+            // Temporary fix for missing turn data struct on turn 1
+            pokemon.resetTurnData();
+          }
+          pokemon.turnData.battleStatsIncreased = true;
+        } else if (levels.value < 0 && pokemon.summonData.battleStats[stat] > -6) {
+          if (!pokemon.turnData) {
+            // Temporary fix for missing turn data struct on turn 1
+            pokemon.resetTurnData();
+          }
+          pokemon.turnData.battleStatsDecreased = true;
+        }
+
         pokemon.summonData.battleStats[stat] = Math.max(Math.min(pokemon.summonData.battleStats[stat] + levels.value, 6), -6);
       }
 
diff --git a/src/test/abilities/ability_timing.test.ts b/src/test/abilities/ability_timing.test.ts
index 3238f880992..fb3d3af1a6b 100644
--- a/src/test/abilities/ability_timing.test.ts
+++ b/src/test/abilities/ability_timing.test.ts
@@ -1,13 +1,11 @@
+import { BattleStyle } from "#app/enums/battle-style";
 import { CommandPhase } from "#app/phases/command-phase";
-import { MessagePhase } from "#app/phases/message-phase";
 import { TurnInitPhase } from "#app/phases/turn-init-phase";
 import i18next, { initI18n } from "#app/plugins/i18n";
 import { Mode } from "#app/ui/ui";
 import { Abilities } from "#enums/abilities";
-import { Moves } from "#enums/moves";
 import { Species } from "#enums/species";
 import GameManager from "#test/utils/gameManager";
-import { SPLASH_ONLY } from "#test/utils/testUtils";
 import Phaser from "phaser";
 import { afterEach, beforeAll, beforeEach, describe, expect, it } from "vitest";
 
@@ -28,19 +26,18 @@ describe("Ability Timing", () => {
 
   beforeEach(() => {
     game = new GameManager(phaserGame);
-    game.override.battleType("single");
 
-    game.override.enemySpecies(Species.PIDGEY);
-    game.override.enemyAbility(Abilities.INTIMIDATE);
-    game.override.enemyMoveset(SPLASH_ONLY);
-
-    game.override.ability(Abilities.BALL_FETCH);
-    game.override.moveset([Moves.SPLASH, Moves.ICE_BEAM]);
+    game.override
+      .battleType("single")
+      .enemySpecies(Species.MAGIKARP)
+      .enemyAbility(Abilities.INTIMIDATE)
+      .ability(Abilities.BALL_FETCH);
   });
 
-  it("should trigger after switch check", async() => {
+  it("should trigger after switch check", async () => {
     initI18n();
     i18next.changeLanguage("en");
+    game.settings.battleStyle = BattleStyle.SWITCH;
     await game.classicMode.runToSummon([Species.EEVEE, Species.FEEBAS]);
 
     game.onNextPrompt("CheckSwitchPhase", Mode.CONFIRM, () => {
@@ -48,7 +45,7 @@ describe("Ability Timing", () => {
       game.endPhase();
     }, () => game.isCurrentPhase(CommandPhase) || game.isCurrentPhase(TurnInitPhase));
 
-    await game.phaseInterceptor.to(MessagePhase);
+    await game.phaseInterceptor.to("MessagePhase");
     const message = game.textInterceptor.getLatestMessage();
     expect(message).toContain("Attack fell");
   }, 5000);
diff --git a/src/test/abilities/disguise.test.ts b/src/test/abilities/disguise.test.ts
index 85141fdb491..bbb0a20dc1a 100644
--- a/src/test/abilities/disguise.test.ts
+++ b/src/test/abilities/disguise.test.ts
@@ -1,11 +1,5 @@
 import { BattleStat } from "#app/data/battle-stat";
 import { StatusEffect } from "#app/data/status-effect";
-import { CommandPhase } from "#app/phases/command-phase";
-import { MoveEffectPhase } from "#app/phases/move-effect-phase";
-import { MoveEndPhase } from "#app/phases/move-end-phase";
-import { TurnEndPhase } from "#app/phases/turn-end-phase";
-import { TurnInitPhase } from "#app/phases/turn-init-phase";
-import { Mode } from "#app/ui/ui";
 import { toDmgValue } from "#app/utils";
 import { Moves } from "#enums/moves";
 import { Species } from "#enums/species";
@@ -33,13 +27,12 @@ describe("Abilities - Disguise", () => {
 
   beforeEach(() => {
     game = new GameManager(phaserGame);
-    game.override.battleType("single");
-
-    game.override.enemySpecies(Species.MIMIKYU);
-    game.override.enemyMoveset(SPLASH_ONLY);
-
-    game.override.starterSpecies(Species.REGIELEKI);
-    game.override.moveset([Moves.SHADOW_SNEAK, Moves.VACUUM_WAVE, Moves.TOXIC_THREAD, Moves.SPLASH]);
+    game.override
+      .battleType("single")
+      .enemySpecies(Species.MIMIKYU)
+      .enemyMoveset(SPLASH_ONLY)
+      .starterSpecies(Species.REGIELEKI)
+      .moveset([Moves.SHADOW_SNEAK, Moves.VACUUM_WAVE, Moves.TOXIC_THREAD, Moves.SPLASH]);
   }, TIMEOUT);
 
   it("takes no damage from attacking move and transforms to Busted form, takes 1/8 max HP damage from the disguise breaking", async () => {
@@ -53,7 +46,7 @@ describe("Abilities - Disguise", () => {
 
     game.move.select(Moves.SHADOW_SNEAK);
 
-    await game.phaseInterceptor.to(MoveEndPhase);
+    await game.phaseInterceptor.to("MoveEndPhase");
 
     expect(mimikyu.hp).equals(maxHp - disguiseDamage);
     expect(mimikyu.formIndex).toBe(bustedForm);
@@ -68,7 +61,7 @@ describe("Abilities - Disguise", () => {
 
     game.move.select(Moves.VACUUM_WAVE);
 
-    await game.phaseInterceptor.to(MoveEndPhase);
+    await game.phaseInterceptor.to("MoveEndPhase");
 
     expect(mimikyu.formIndex).toBe(disguisedForm);
   }, TIMEOUT);
@@ -87,12 +80,12 @@ describe("Abilities - Disguise", () => {
     game.move.select(Moves.SURGING_STRIKES);
 
     // First hit
-    await game.phaseInterceptor.to(MoveEffectPhase);
+    await game.phaseInterceptor.to("MoveEffectPhase");
     expect(mimikyu.hp).equals(maxHp - disguiseDamage);
     expect(mimikyu.formIndex).toBe(disguisedForm);
 
     // Second hit
-    await game.phaseInterceptor.to(MoveEffectPhase);
+    await game.phaseInterceptor.to("MoveEffectPhase");
     expect(mimikyu.hp).lessThan(maxHp - disguiseDamage);
     expect(mimikyu.formIndex).toBe(bustedForm);
   }, TIMEOUT);
@@ -105,7 +98,7 @@ describe("Abilities - Disguise", () => {
 
     game.move.select(Moves.TOXIC_THREAD);
 
-    await game.phaseInterceptor.to(TurnEndPhase);
+    await game.phaseInterceptor.to("TurnEndPhase");
 
     expect(mimikyu.formIndex).toBe(disguisedForm);
     expect(mimikyu.status?.effect).toBe(StatusEffect.POISON);
@@ -125,7 +118,7 @@ describe("Abilities - Disguise", () => {
 
     game.move.select(Moves.SPLASH);
 
-    await game.phaseInterceptor.to(TurnEndPhase);
+    await game.phaseInterceptor.to("TurnEndPhase");
 
     expect(mimikyu.formIndex).toBe(bustedForm);
     expect(mimikyu.hp).equals(maxHp - disguiseDamage);
@@ -133,7 +126,7 @@ describe("Abilities - Disguise", () => {
     await game.toNextTurn();
     game.doSwitchPokemon(1);
 
-    await game.phaseInterceptor.to(TurnEndPhase);
+    await game.phaseInterceptor.to("TurnEndPhase");
 
     expect(mimikyu.formIndex).toBe(bustedForm);
   }, TIMEOUT);
@@ -194,15 +187,6 @@ describe("Abilities - Disguise", () => {
     await game.toNextTurn();
     game.move.select(Moves.SPLASH);
     await game.doKillOpponents();
-    game.onNextPrompt("CheckSwitchPhase", Mode.CONFIRM, () => { // TODO: Make tests run in set mode instead of switch mode
-      game.setMode(Mode.MESSAGE);
-      game.endPhase();
-    }, () => game.isCurrentPhase(CommandPhase) || game.isCurrentPhase(TurnInitPhase));
-
-    game.onNextPrompt("CheckSwitchPhase", Mode.CONFIRM, () => {
-      game.setMode(Mode.MESSAGE);
-      game.endPhase();
-    }, () => game.isCurrentPhase(CommandPhase) || game.isCurrentPhase(TurnInitPhase));
     await game.phaseInterceptor.to("PartyHealPhase");
 
     expect(mimikyu1.formIndex).toBe(disguisedForm);
diff --git a/src/test/abilities/flower_gift.test.ts b/src/test/abilities/flower_gift.test.ts
new file mode 100644
index 00000000000..f8c1141386d
--- /dev/null
+++ b/src/test/abilities/flower_gift.test.ts
@@ -0,0 +1,154 @@
+import { BattlerIndex } from "#app/battle";
+import { Abilities } from "#app/enums/abilities";
+import { Stat } from "#app/enums/stat";
+import { WeatherType } from "#app/enums/weather-type";
+import { Moves } from "#enums/moves";
+import { Species } from "#enums/species";
+import GameManager from "#test/utils/gameManager";
+import { SPLASH_ONLY } from "#test/utils/testUtils";
+import Phaser from "phaser";
+import { afterEach, beforeAll, beforeEach, describe, expect, it } from "vitest";
+
+describe("Abilities - Flower Gift", () => {
+  let phaserGame: Phaser.Game;
+  let game: GameManager;
+  const OVERCAST_FORM = 0;
+  const SUNSHINE_FORM = 1;
+
+  /**
+   * Tests reverting to normal form when Cloud Nine/Air Lock is active on the field
+   * @param {GameManager} game The game manager instance
+   * @param {Abilities} ability The ability that is active on the field
+   */
+  const testRevertFormAgainstAbility = async (game: GameManager, ability: Abilities) => {
+    game.override.starterForms({ [Species.CASTFORM]: SUNSHINE_FORM }).enemyAbility(ability);
+    await game.classicMode.startBattle([Species.CASTFORM]);
+
+    game.move.select(Moves.SPLASH);
+
+    expect(game.scene.getPlayerPokemon()?.formIndex).toBe(OVERCAST_FORM);
+  };
+
+  beforeAll(() => {
+    phaserGame = new Phaser.Game({
+      type: Phaser.HEADLESS,
+    });
+  });
+
+  afterEach(() => {
+    game.phaseInterceptor.restoreOg();
+  });
+
+  beforeEach(() => {
+    game = new GameManager(phaserGame);
+    game.override
+      .moveset([Moves.SPLASH, Moves.RAIN_DANCE, Moves.SUNNY_DAY, Moves.SKILL_SWAP])
+      .enemySpecies(Species.MAGIKARP)
+      .enemyMoveset(SPLASH_ONLY)
+      .enemyAbility(Abilities.BALL_FETCH);
+  });
+
+  // TODO: Uncomment expect statements when the ability is implemented - currently does not increase stats of allies
+  it("increases the Attack and Special Defense stats of the Pokémon with this Ability and its allies by 1.5× during Harsh Sunlight", async () => {
+    game.override.battleType("double");
+    await game.classicMode.startBattle([Species.CHERRIM, Species.MAGIKARP]);
+
+    const [ cherrim ] = game.scene.getPlayerField();
+    const cherrimAtkStat = cherrim.getBattleStat(Stat.ATK);
+    const cherrimSpDefStat = cherrim.getBattleStat(Stat.SPDEF);
+
+    // const magikarpAtkStat = magikarp.getBattleStat(Stat.ATK);;
+    // const magikarpSpDefStat = magikarp.getBattleStat(Stat.SPDEF);
+
+    game.move.select(Moves.SUNNY_DAY, 0);
+    game.move.select(Moves.SPLASH, 1);
+
+    await game.setTurnOrder([BattlerIndex.PLAYER, BattlerIndex.PLAYER_2, BattlerIndex.ENEMY, BattlerIndex.ENEMY_2]);
+    await game.phaseInterceptor.to("TurnEndPhase");
+
+    expect(cherrim.formIndex).toBe(SUNSHINE_FORM);
+    expect(cherrim.getBattleStat(Stat.ATK)).toBe(Math.floor(cherrimAtkStat * 1.5));
+    expect(cherrim.getBattleStat(Stat.SPDEF)).toBe(Math.floor(cherrimSpDefStat * 1.5));
+    // expect(magikarp.getBattleStat(Stat.ATK)).toBe(Math.floor(magikarpAtkStat * 1.5));
+    // expect(magikarp.getBattleStat(Stat.SPDEF)).toBe(Math.floor(magikarpSpDefStat * 1.5));
+  });
+
+  it("changes the Pokemon's form during Harsh Sunlight", async () => {
+    game.override.weather(WeatherType.HARSH_SUN);
+    await game.classicMode.startBattle([Species.CHERRIM]);
+
+    const cherrim = game.scene.getPlayerPokemon()!;
+    expect(cherrim.formIndex).toBe(SUNSHINE_FORM);
+
+    game.move.select(Moves.SPLASH);
+  });
+
+  it("reverts to Overcast Form if a Pokémon on the field has Air Lock", async () => {
+    await testRevertFormAgainstAbility(game, Abilities.AIR_LOCK);
+  });
+
+  it("reverts to Overcast Form if a Pokémon on the field has Cloud Nine", async () => {
+    await testRevertFormAgainstAbility(game, Abilities.CLOUD_NINE);
+  });
+
+  it("reverts to Overcast Form when the Pokémon loses Flower Gift, changes form under Harsh Sunlight/Sunny when it regains it", async () => {
+    game.override.enemyMoveset(Array(4).fill(Moves.SKILL_SWAP)).weather(WeatherType.HARSH_SUN);
+
+    await game.classicMode.startBattle([Species.CHERRIM]);
+
+    const cherrim = game.scene.getPlayerPokemon()!;
+
+    game.move.select(Moves.SKILL_SWAP);
+
+    await game.phaseInterceptor.to("TurnStartPhase");
+    expect(cherrim.formIndex).toBe(SUNSHINE_FORM);
+
+    await game.phaseInterceptor.to("MoveEndPhase");
+    expect(cherrim.formIndex).toBe(OVERCAST_FORM);
+
+    await game.phaseInterceptor.to("MoveEndPhase");
+    expect(cherrim.formIndex).toBe(SUNSHINE_FORM);
+  });
+
+  it("reverts to Overcast Form when the Flower Gift is suppressed, changes form under Harsh Sunlight/Sunny when it regains it", async () => {
+    game.override.enemyMoveset(Array(4).fill(Moves.GASTRO_ACID)).weather(WeatherType.HARSH_SUN);
+
+    await game.classicMode.startBattle([Species.CHERRIM, Species.MAGIKARP]);
+
+    const cherrim = game.scene.getPlayerPokemon()!;
+
+    expect(cherrim.formIndex).toBe(SUNSHINE_FORM);
+
+    game.move.select(Moves.SPLASH);
+    await game.setTurnOrder([BattlerIndex.ENEMY, BattlerIndex.PLAYER]);
+    await game.phaseInterceptor.to("TurnEndPhase");
+
+    expect(cherrim.summonData.abilitySuppressed).toBe(true);
+    expect(cherrim.formIndex).toBe(OVERCAST_FORM);
+
+    await game.toNextTurn();
+
+    game.doSwitchPokemon(1);
+    await game.toNextTurn();
+
+    game.doSwitchPokemon(1);
+    await game.phaseInterceptor.to("MovePhase");
+
+    expect(cherrim.summonData.abilitySuppressed).toBe(false);
+    expect(cherrim.formIndex).toBe(SUNSHINE_FORM);
+  });
+
+  it("should be in Overcast Form after the user is switched out", async () => {
+    game.override.weather(WeatherType.SUNNY);
+
+    await game.classicMode.startBattle([Species.CASTFORM, Species.MAGIKARP]);
+    const cherrim = game.scene.getPlayerPokemon()!;
+
+    expect(cherrim.formIndex).toBe(SUNSHINE_FORM);
+
+    game.doSwitchPokemon(1);
+    await game.toNextTurn();
+
+    expect(cherrim.formIndex).toBe(OVERCAST_FORM);
+  });
+});
diff --git a/src/test/abilities/intimidate.test.ts b/src/test/abilities/intimidate.test.ts
index 93b663d06da..bc5b5ab1a7d 100644
--- a/src/test/abilities/intimidate.test.ts
+++ b/src/test/abilities/intimidate.test.ts
@@ -1,12 +1,8 @@
 import { BattleStat } from "#app/data/battle-stat";
 import { Status, StatusEffect } from "#app/data/status-effect";
 import { GameModes, getGameMode } from "#app/game-mode";
-import { CommandPhase } from "#app/phases/command-phase";
-import { DamagePhase } from "#app/phases/damage-phase";
 import { EncounterPhase } from "#app/phases/encounter-phase";
-import { EnemyCommandPhase } from "#app/phases/enemy-command-phase";
 import { SelectStarterPhase } from "#app/phases/select-starter-phase";
-import { TurnInitPhase } from "#app/phases/turn-init-phase";
 import { Mode } from "#app/ui/ui";
 import { Abilities } from "#enums/abilities";
 import { Moves } from "#enums/moves";
@@ -33,36 +29,26 @@ describe("Abilities - Intimidate", () => {
 
   beforeEach(() => {
     game = new GameManager(phaserGame);
-    game.override.battleType("single");
-    game.override.enemySpecies(Species.RATTATA);
-    game.override.enemyAbility(Abilities.INTIMIDATE);
-    game.override.enemyPassiveAbility(Abilities.HYDRATION);
-    game.override.ability(Abilities.INTIMIDATE);
-    game.override.startingWave(3);
-    game.override.enemyMoveset(SPLASH_ONLY);
+    game.override
+      .battleType("single")
+      .enemySpecies(Species.MAGIKARP)
+      .enemyAbility(Abilities.INTIMIDATE)
+      .ability(Abilities.INTIMIDATE)
+      .moveset([Moves.SPLASH, Moves.AERIAL_ACE])
+      .enemyMoveset(SPLASH_ONLY);
   });
 
   it("single - wild with switch", async () => {
-    await game.classicMode.runToSummon([Species.MIGHTYENA, Species.POOCHYENA]);
-    game.onNextPrompt(
-      "CheckSwitchPhase",
-      Mode.CONFIRM,
-      () => {
-        game.setMode(Mode.MESSAGE);
-        game.endPhase();
-      },
-      () => game.isCurrentPhase(CommandPhase) || game.isCurrentPhase(TurnInitPhase)
-    );
-    await game.phaseInterceptor.to(CommandPhase, false);
-    expect(game.scene.getParty()[0].species.speciesId).toBe(Species.MIGHTYENA);
+    await game.startBattle([Species.MIGHTYENA, Species.POOCHYENA]);
+
     let battleStatsOpponent = game.scene.currentBattle.enemyParty[0].summonData.battleStats;
     expect(battleStatsOpponent[BattleStat.ATK]).toBe(-1);
+
     let battleStatsPokemon = game.scene.getParty()[0].summonData.battleStats;
     expect(battleStatsPokemon[BattleStat.ATK]).toBe(-1);
+
     game.doSwitchPokemon(1);
-    await game.phaseInterceptor.run(CommandPhase);
-    await game.phaseInterceptor.to(CommandPhase);
-    expect(game.scene.getParty()[0].species.speciesId).toBe(Species.POOCHYENA);
+    await game.phaseInterceptor.to("CommandPhase");
 
     battleStatsPokemon = game.scene.getParty()[0].summonData.battleStats;
     expect(battleStatsPokemon[BattleStat.ATK]).toBe(0);
@@ -73,25 +59,16 @@ describe("Abilities - Intimidate", () => {
 
   it("single - boss should only trigger once then switch", async () => {
     game.override.startingWave(10);
-    await game.classicMode.runToSummon([Species.MIGHTYENA, Species.POOCHYENA]);
-    game.onNextPrompt(
-      "CheckSwitchPhase",
-      Mode.CONFIRM,
-      () => {
-        game.setMode(Mode.MESSAGE);
-        game.endPhase();
-      },
-      () => game.isCurrentPhase(CommandPhase) || game.isCurrentPhase(TurnInitPhase)
-    );
-    await game.phaseInterceptor.to(CommandPhase, false);
+    await game.startBattle([Species.MIGHTYENA, Species.POOCHYENA]);
+
     let battleStatsOpponent = game.scene.currentBattle.enemyParty[0].summonData.battleStats;
     expect(battleStatsOpponent[BattleStat.ATK]).toBe(-1);
+
     let battleStatsPokemon = game.scene.getParty()[0].summonData.battleStats;
     expect(battleStatsPokemon[BattleStat.ATK]).toBe(-1);
+
     game.doSwitchPokemon(1);
-    await game.phaseInterceptor.run(CommandPhase);
-    await game.phaseInterceptor.to(CommandPhase);
-    expect(game.scene.getParty()[0].species.speciesId).toBe(Species.POOCHYENA);
+    await game.phaseInterceptor.to("CommandPhase");
 
     battleStatsPokemon = game.scene.getParty()[0].summonData.battleStats;
     expect(battleStatsPokemon[BattleStat.ATK]).toBe(0);
@@ -102,25 +79,16 @@ describe("Abilities - Intimidate", () => {
 
   it("single - trainer should only trigger once with switch", async () => {
     game.override.startingWave(5);
-    await game.classicMode.runToSummon([Species.MIGHTYENA, Species.POOCHYENA]);
-    game.onNextPrompt(
-      "CheckSwitchPhase",
-      Mode.CONFIRM,
-      () => {
-        game.setMode(Mode.MESSAGE);
-        game.endPhase();
-      },
-      () => game.isCurrentPhase(CommandPhase) || game.isCurrentPhase(TurnInitPhase)
-    );
-    await game.phaseInterceptor.to(CommandPhase, false);
+    await game.startBattle([Species.MIGHTYENA, Species.POOCHYENA]);
+
     let battleStatsOpponent = game.scene.currentBattle.enemyParty[0].summonData.battleStats;
     expect(battleStatsOpponent[BattleStat.ATK]).toBe(-1);
+
     let battleStatsPokemon = game.scene.getParty()[0].summonData.battleStats;
     expect(battleStatsPokemon[BattleStat.ATK]).toBe(-1);
+
     game.doSwitchPokemon(1);
-    await game.phaseInterceptor.run(CommandPhase);
-    await game.phaseInterceptor.to(CommandPhase);
-    expect(game.scene.getParty()[0].species.speciesId).toBe(Species.POOCHYENA);
+    await game.phaseInterceptor.to("CommandPhase");
 
     battleStatsPokemon = game.scene.getParty()[0].summonData.battleStats;
     expect(battleStatsPokemon[BattleStat.ATK]).toBe(0);
@@ -130,21 +98,14 @@ describe("Abilities - Intimidate", () => {
   }, 200000);
 
   it("double - trainer should only trigger once per pokemon", async () => {
-    game.override.battleType("double");
-    game.override.startingWave(5);
-    await game.classicMode.runToSummon([Species.MIGHTYENA, Species.POOCHYENA]);
-    game.onNextPrompt(
-      "CheckSwitchPhase",
-      Mode.CONFIRM,
-      () => {
-        game.setMode(Mode.MESSAGE);
-        game.endPhase();
-      },
-      () => game.isCurrentPhase(CommandPhase) || game.isCurrentPhase(TurnInitPhase)
-    );
-    await game.phaseInterceptor.to(CommandPhase, false);
+    game.override
+      .battleType("double")
+      .startingWave(5);
+    await game.startBattle([Species.MIGHTYENA, Species.POOCHYENA]);
+
     const battleStatsOpponent = game.scene.currentBattle.enemyParty[0].summonData.battleStats;
     expect(battleStatsOpponent[BattleStat.ATK]).toBe(-2);
+
     const battleStatsOpponent2 = game.scene.currentBattle.enemyParty[1].summonData.battleStats;
     expect(battleStatsOpponent2[BattleStat.ATK]).toBe(-2);
 
@@ -157,20 +118,11 @@ describe("Abilities - Intimidate", () => {
 
   it("double - wild: should only trigger once per pokemon", async () => {
     game.override.battleType("double");
-    game.override.startingWave(3);
-    await game.classicMode.runToSummon([Species.MIGHTYENA, Species.POOCHYENA]);
-    game.onNextPrompt(
-      "CheckSwitchPhase",
-      Mode.CONFIRM,
-      () => {
-        game.setMode(Mode.MESSAGE);
-        game.endPhase();
-      },
-      () => game.isCurrentPhase(CommandPhase) || game.isCurrentPhase(TurnInitPhase)
-    );
-    await game.phaseInterceptor.to(CommandPhase, false);
+    await game.startBattle([Species.MIGHTYENA, Species.POOCHYENA]);
+
     const battleStatsOpponent = game.scene.currentBattle.enemyParty[0].summonData.battleStats;
     expect(battleStatsOpponent[BattleStat.ATK]).toBe(-2);
+
     const battleStatsOpponent2 = game.scene.currentBattle.enemyParty[1].summonData.battleStats;
     expect(battleStatsOpponent2[BattleStat.ATK]).toBe(-2);
 
@@ -182,21 +134,14 @@ describe("Abilities - Intimidate", () => {
   }, 20000);
 
   it("double - boss: should only trigger once per pokemon", async () => {
-    game.override.battleType("double");
-    game.override.startingWave(10);
-    await game.classicMode.runToSummon([Species.MIGHTYENA, Species.POOCHYENA]);
-    game.onNextPrompt(
-      "CheckSwitchPhase",
-      Mode.CONFIRM,
-      () => {
-        game.setMode(Mode.MESSAGE);
-        game.endPhase();
-      },
-      () => game.isCurrentPhase(CommandPhase) || game.isCurrentPhase(TurnInitPhase)
-    );
-    await game.phaseInterceptor.to(CommandPhase, false);
+    game.override
+      .battleType("double")
+      .startingWave(10);
+    await game.startBattle([Species.MIGHTYENA, Species.POOCHYENA]);
+
     const battleStatsOpponent = game.scene.currentBattle.enemyParty[0].summonData.battleStats;
     expect(battleStatsOpponent[BattleStat.ATK]).toBe(-2);
+
     const battleStatsOpponent2 = game.scene.currentBattle.enemyParty[1].summonData.battleStats;
     expect(battleStatsOpponent2[BattleStat.ATK]).toBe(-2);
 
@@ -208,104 +153,101 @@ describe("Abilities - Intimidate", () => {
   }, 20000);
 
   it("single - wild next wave opp triger once, us: none", async () => {
-    game.override.startingWave(2);
-    game.override.moveset([Moves.AERIAL_ACE]);
-    await game.startBattle([Species.MIGHTYENA, Species.POOCHYENA]);
+    await game.startBattle([Species.MIGHTYENA]);
+
     let battleStatsOpponent = game.scene.currentBattle.enemyParty[0].summonData.battleStats;
     expect(battleStatsOpponent[BattleStat.ATK]).toBe(-1);
+
     let battleStatsPokemon = game.scene.getParty()[0].summonData.battleStats;
     expect(battleStatsPokemon[BattleStat.ATK]).toBe(-1);
 
     game.move.select(Moves.AERIAL_ACE);
-    await game.phaseInterceptor.runFrom(EnemyCommandPhase).to(DamagePhase);
-    await game.killPokemon(game.scene.currentBattle.enemyParty[0]);
-    expect(game.scene.currentBattle.enemyParty[0].isFainted()).toBe(true);
+    await game.phaseInterceptor.to("DamagePhase");
+    await game.doKillOpponents();
     await game.toNextWave();
+
     battleStatsPokemon = game.scene.getParty()[0].summonData.battleStats;
     expect(battleStatsPokemon[BattleStat.ATK]).toBe(-2);
+
     battleStatsOpponent = game.scene.currentBattle.enemyParty[0].summonData.battleStats;
     expect(battleStatsOpponent[BattleStat.ATK]).toBe(0);
   }, 20000);
 
   it("single - wild next turn - no retrigger on next turn", async () => {
-    game.override.startingWave(2);
-    game.override.moveset([Moves.SPLASH]);
-    await game.startBattle([Species.MIGHTYENA, Species.POOCHYENA]);
+    await game.startBattle([Species.MIGHTYENA]);
+
     let battleStatsOpponent = game.scene.currentBattle.enemyParty[0].summonData.battleStats;
     expect(battleStatsOpponent[BattleStat.ATK]).toBe(-1);
+
     let battleStatsPokemon = game.scene.getParty()[0].summonData.battleStats;
     expect(battleStatsPokemon[BattleStat.ATK]).toBe(-1);
 
-    game.move.select(Moves.AERIAL_ACE);
-    console.log("===to new turn===");
+    game.move.select(Moves.SPLASH);
     await game.toNextTurn();
+
     battleStatsPokemon = game.scene.getParty()[0].summonData.battleStats;
     expect(battleStatsPokemon[BattleStat.ATK]).toBe(-1);
+
     battleStatsOpponent = game.scene.currentBattle.enemyParty[0].summonData.battleStats;
     expect(battleStatsOpponent[BattleStat.ATK]).toBe(-1);
   }, 20000);
 
   it("single - trainer should only trigger once and each time he switch", async () => {
-    game.override.moveset([Moves.SPLASH]);
-    game.override.enemyMoveset([Moves.VOLT_SWITCH, Moves.VOLT_SWITCH, Moves.VOLT_SWITCH, Moves.VOLT_SWITCH]);
-    game.override.startingWave(5);
-    await game.startBattle([Species.MIGHTYENA, Species.POOCHYENA]);
+    game.override
+      .enemyMoveset(Array(4).fill(Moves.VOLT_SWITCH))
+      .startingWave(5);
+    await game.startBattle([Species.MIGHTYENA]);
+
     let battleStatsOpponent = game.scene.currentBattle.enemyParty[0].summonData.battleStats;
     expect(battleStatsOpponent[BattleStat.ATK]).toBe(-1);
+
     let battleStatsPokemon = game.scene.getParty()[0].summonData.battleStats;
     expect(battleStatsPokemon[BattleStat.ATK]).toBe(-1);
 
-    game.move.select(Moves.AERIAL_ACE);
-    console.log("===to new turn===");
+    game.move.select(Moves.SPLASH);
     await game.toNextTurn();
+
     battleStatsPokemon = game.scene.getParty()[0].summonData.battleStats;
     expect(battleStatsPokemon[BattleStat.ATK]).toBe(-2);
+
     battleStatsOpponent = game.scene.currentBattle.enemyParty[0].summonData.battleStats;
     expect(battleStatsOpponent[BattleStat.ATK]).toBe(0);
 
-    game.move.select(Moves.AERIAL_ACE);
-    console.log("===to new turn===");
+    game.move.select(Moves.SPLASH);
     await game.toNextTurn();
+
     battleStatsPokemon = game.scene.getParty()[0].summonData.battleStats;
     expect(battleStatsPokemon[BattleStat.ATK]).toBe(-3);
+
     battleStatsOpponent = game.scene.currentBattle.enemyParty[0].summonData.battleStats;
     expect(battleStatsOpponent[BattleStat.ATK]).toBe(0);
   }, 200000);
 
   it("single - trainer should only trigger once whatever turn we are", async () => {
-    game.override.moveset([Moves.SPLASH]);
-    game.override.enemyMoveset(SPLASH_ONLY);
     game.override.startingWave(5);
-    await game.startBattle([Species.MIGHTYENA, Species.POOCHYENA]);
-    let battleStatsOpponent = game.scene.currentBattle.enemyParty[0].summonData.battleStats;
+    await game.startBattle([Species.MIGHTYENA]);
+
+    const battleStatsOpponent = game.scene.currentBattle.enemyParty[0].summonData.battleStats;
+    const battleStatsPokemon = game.scene.getParty()[0].summonData.battleStats;
+
     expect(battleStatsOpponent[BattleStat.ATK]).toBe(-1);
-    let battleStatsPokemon = game.scene.getParty()[0].summonData.battleStats;
     expect(battleStatsPokemon[BattleStat.ATK]).toBe(-1);
 
-    game.move.select(Moves.AERIAL_ACE);
-    console.log("===to new turn===");
+    game.move.select(Moves.SPLASH);
     await game.toNextTurn();
-    battleStatsPokemon = game.scene.getParty()[0].summonData.battleStats;
-    expect(battleStatsPokemon[BattleStat.ATK]).toBe(-1);
-    battleStatsOpponent = game.scene.currentBattle.enemyParty[0].summonData.battleStats;
-    expect(battleStatsOpponent[BattleStat.ATK]).toBe(-1);
 
-    game.move.select(Moves.AERIAL_ACE);
-    console.log("===to new turn===");
-    await game.toNextTurn();
-    battleStatsPokemon = game.scene.getParty()[0].summonData.battleStats;
     expect(battleStatsPokemon[BattleStat.ATK]).toBe(-1);
-    battleStatsOpponent = game.scene.currentBattle.enemyParty[0].summonData.battleStats;
     expect(battleStatsOpponent[BattleStat.ATK]).toBe(-1);
   }, 20000);
 
   it("double - wild vs only 1 on player side", async () => {
     game.override.battleType("double");
-    game.override.startingWave(3);
     await game.classicMode.runToSummon([Species.MIGHTYENA]);
-    await game.phaseInterceptor.to(CommandPhase, false);
+    await game.phaseInterceptor.to("CommandPhase", false);
+
     const battleStatsOpponent = game.scene.currentBattle.enemyParty[0].summonData.battleStats;
     expect(battleStatsOpponent[BattleStat.ATK]).toBe(-1);
+
     const battleStatsOpponent2 = game.scene.currentBattle.enemyParty[1].summonData.battleStats;
     expect(battleStatsOpponent2[BattleStat.ATK]).toBe(-1);
 
@@ -315,7 +257,6 @@ describe("Abilities - Intimidate", () => {
 
   it("double - wild vs only 1 alive on player side", async () => {
     game.override.battleType("double");
-    game.override.startingWave(3);
     await game.runToTitle();
 
     game.onNextPrompt("TitlePhase", Mode.TITLE, () => {
@@ -330,9 +271,11 @@ describe("Abilities - Intimidate", () => {
 
     await game.phaseInterceptor.run(EncounterPhase);
 
-    await game.phaseInterceptor.to(CommandPhase, false);
+    await game.phaseInterceptor.to("CommandPhase", false);
+
     const battleStatsOpponent = game.scene.currentBattle.enemyParty[0].summonData.battleStats;
     expect(battleStatsOpponent[BattleStat.ATK]).toBe(-1);
+
     const battleStatsOpponent2 = game.scene.currentBattle.enemyParty[1].summonData.battleStats;
     expect(battleStatsOpponent2[BattleStat.ATK]).toBe(-1);
 
diff --git a/src/test/abilities/tera_shell.test.ts b/src/test/abilities/tera_shell.test.ts
new file mode 100644
index 00000000000..f9cb2935619
--- /dev/null
+++ b/src/test/abilities/tera_shell.test.ts
@@ -0,0 +1,111 @@
+import { Abilities } from "#app/enums/abilities";
+import { Moves } from "#app/enums/moves";
+import { Species } from "#app/enums/species";
+import { HitResult } from "#app/field/pokemon.js";
+import GameManager from "#test/utils/gameManager";
+import Phaser from "phaser";
+import { afterEach, beforeAll, beforeEach, describe, expect, it, vi } from "vitest";
+
+const TIMEOUT = 10 * 1000; // 10 second timeout
+
+describe("Abilities - Tera Shell", () => {
+  let phaserGame: Phaser.Game;
+  let game: GameManager;
+
+  beforeAll(() => {
+    phaserGame = new Phaser.Game({
+      type: Phaser.HEADLESS,
+    });
+  });
+
+  afterEach(() => {
+    game.phaseInterceptor.restoreOg();
+  });
+
+  beforeEach(() => {
+    game = new GameManager(phaserGame);
+    game.override
+      .battleType("single")
+      .ability(Abilities.TERA_SHELL)
+      .moveset([Moves.SPLASH])
+      .enemySpecies(Species.SNORLAX)
+      .enemyAbility(Abilities.INSOMNIA)
+      .enemyMoveset(Array(4).fill(Moves.MACH_PUNCH))
+      .startingLevel(100)
+      .enemyLevel(100);
+  });
+
+  it(
+    "should change the effectiveness of non-resisted attacks when the source is at full HP",
+    async () => {
+      await game.classicMode.startBattle([Species.SNORLAX]);
+
+      const playerPokemon = game.scene.getPlayerPokemon()!;
+      vi.spyOn(playerPokemon, "getMoveEffectiveness");
+
+      game.move.select(Moves.SPLASH);
+
+      await game.phaseInterceptor.to("MoveEndPhase");
+      expect(playerPokemon.getMoveEffectiveness).toHaveLastReturnedWith(0.5);
+
+      await game.toNextTurn();
+
+      game.move.select(Moves.SPLASH);
+
+      await game.phaseInterceptor.to("MoveEndPhase");
+      expect(playerPokemon.getMoveEffectiveness).toHaveLastReturnedWith(2);
+    }, TIMEOUT
+  );
+
+  it(
+    "should not override type immunities",
+    async () => {
+      game.override.enemyMoveset(Array(4).fill(Moves.SHADOW_SNEAK));
+
+      await game.classicMode.startBattle([Species.SNORLAX]);
+
+      const playerPokemon = game.scene.getPlayerPokemon()!;
+      vi.spyOn(playerPokemon, "getMoveEffectiveness");
+
+      game.move.select(Moves.SPLASH);
+
+      await game.phaseInterceptor.to("MoveEndPhase");
+      expect(playerPokemon.getMoveEffectiveness).toHaveLastReturnedWith(0);
+    }, TIMEOUT
+  );
+
+  it(
+    "should not override type multipliers less than 0.5x",
+    async () => {
+      game.override.enemyMoveset(Array(4).fill(Moves.QUICK_ATTACK));
+
+      await game.classicMode.startBattle([Species.AGGRON]);
+
+      const playerPokemon = game.scene.getPlayerPokemon()!;
+      vi.spyOn(playerPokemon, "getMoveEffectiveness");
+
+      game.move.select(Moves.SPLASH);
+
+      await game.phaseInterceptor.to("MoveEndPhase");
+      expect(playerPokemon.getMoveEffectiveness).toHaveLastReturnedWith(0.25);
+    }, TIMEOUT
+  );
+
+  it(
+    "should not affect the effectiveness of fixed-damage moves",
+    async () => {
+      game.override.enemyMoveset(Array(4).fill(Moves.DRAGON_RAGE));
+
+      await game.classicMode.startBattle([Species.CHARIZARD]);
+
+      const playerPokemon = game.scene.getPlayerPokemon()!;
+      vi.spyOn(playerPokemon, "apply");
+
+      game.move.select(Moves.SPLASH);
+
+      await game.phaseInterceptor.to("BerryPhase", false);
+      expect(playerPokemon.apply).toHaveLastReturnedWith(HitResult.EFFECTIVE);
+      expect(playerPokemon.hp).toBe(playerPokemon.getMaxHp() - 40);
+    }, TIMEOUT
+  );
+});
diff --git a/src/test/endless_boss.test.ts b/src/test/endless_boss.test.ts
index e983be245b6..8a564695e42 100644
--- a/src/test/endless_boss.test.ts
+++ b/src/test/endless_boss.test.ts
@@ -32,7 +32,7 @@ describe("Endless Boss", () => {
 
   it(`should spawn a minor boss every ${EndlessBossWave.Minor} waves in END biome in Endless`, async () => {
     game.override.startingWave(EndlessBossWave.Minor);
-    await game.runToFinalBossEncounter(game, [Species.BIDOOF], GameModes.ENDLESS);
+    await game.runToFinalBossEncounter([Species.BIDOOF], GameModes.ENDLESS);
 
     expect(game.scene.currentBattle.waveIndex).toBe(EndlessBossWave.Minor);
     expect(game.scene.arena.biomeType).toBe(Biome.END);
@@ -44,7 +44,7 @@ describe("Endless Boss", () => {
 
   it(`should spawn a major boss every ${EndlessBossWave.Major} waves in END biome in Endless`, async () => {
     game.override.startingWave(EndlessBossWave.Major);
-    await game.runToFinalBossEncounter(game, [Species.BIDOOF], GameModes.ENDLESS);
+    await game.runToFinalBossEncounter([Species.BIDOOF], GameModes.ENDLESS);
 
     expect(game.scene.currentBattle.waveIndex).toBe(EndlessBossWave.Major);
     expect(game.scene.arena.biomeType).toBe(Biome.END);
@@ -56,7 +56,7 @@ describe("Endless Boss", () => {
 
   it(`should spawn a minor boss every ${EndlessBossWave.Minor} waves in END biome in Spliced Endless`, async () => {
     game.override.startingWave(EndlessBossWave.Minor);
-    await game.runToFinalBossEncounter(game, [Species.BIDOOF], GameModes.SPLICED_ENDLESS);
+    await game.runToFinalBossEncounter([Species.BIDOOF], GameModes.SPLICED_ENDLESS);
 
     expect(game.scene.currentBattle.waveIndex).toBe(EndlessBossWave.Minor);
     expect(game.scene.arena.biomeType).toBe(Biome.END);
@@ -68,7 +68,7 @@ describe("Endless Boss", () => {
 
   it(`should spawn a major boss every ${EndlessBossWave.Major} waves in END biome in Spliced Endless`, async () => {
     game.override.startingWave(EndlessBossWave.Major);
-    await game.runToFinalBossEncounter(game, [Species.BIDOOF], GameModes.SPLICED_ENDLESS);
+    await game.runToFinalBossEncounter([Species.BIDOOF], GameModes.SPLICED_ENDLESS);
 
     expect(game.scene.currentBattle.waveIndex).toBe(EndlessBossWave.Major);
     expect(game.scene.arena.biomeType).toBe(Biome.END);
@@ -80,7 +80,7 @@ describe("Endless Boss", () => {
 
   it(`should NOT spawn major or minor boss outside wave ${EndlessBossWave.Minor}s in END biome`, async () => {
     game.override.startingWave(EndlessBossWave.Minor - 1);
-    await game.runToFinalBossEncounter(game, [Species.BIDOOF], GameModes.ENDLESS);
+    await game.runToFinalBossEncounter([Species.BIDOOF], GameModes.ENDLESS);
 
     expect(game.scene.currentBattle.waveIndex).not.toBe(EndlessBossWave.Minor);
     expect(game.scene.getEnemyPokemon()!.species.speciesId).not.toBe(Species.ETERNATUS);
diff --git a/src/test/evolution.test.ts b/src/test/evolution.test.ts
index f9123cf6d9a..5844e92ab8d 100644
--- a/src/test/evolution.test.ts
+++ b/src/test/evolution.test.ts
@@ -2,9 +2,10 @@ import { pokemonEvolutions, SpeciesFormEvolution, SpeciesWildEvolutionDelay } fr
 import { Abilities } from "#app/enums/abilities";
 import { Moves } from "#app/enums/moves";
 import { Species } from "#app/enums/species";
+import * as Utils from "#app/utils";
 import GameManager from "#test/utils/gameManager";
 import Phaser from "phaser";
-import { afterEach, beforeAll, beforeEach, describe, expect, it } from "vitest";
+import { afterEach, beforeAll, beforeEach, describe, expect, it, vi } from "vitest";
 import { SPLASH_ONLY } from "./utils/testUtils";
 
 describe("Evolution", () => {
@@ -148,4 +149,28 @@ describe("Evolution", () => {
     expect(cyndaquil.hp).toBeGreaterThan(hpBefore);
     expect(cyndaquil.hp).toBeLessThan(cyndaquil.getMaxHp());
   }, TIMEOUT);
+
+  it("should handle rng-based split evolution", async () => {
+    /* this test checks to make sure that tandemaus will
+     * evolve into a 3 family maushold 25% of the time
+     * and a 4 family maushold the other 75% of the time
+     * This is done by using the getEvolution method in pokemon.ts
+     * getEvolution will give back the form that the pokemon can evolve into
+     * It does this by checking the pokemon conditions in pokemon-forms.ts
+     * For tandemaus, the conditions are random due to a randSeedInt(4)
+     * If the value is 0, it's a 3 family maushold, whereas if the value is
+     * 1, 2 or 3, it's a 4 family maushold
+     */
+    await game.startBattle([Species.TANDEMAUS]); // starts us off with a tandemaus
+    const playerPokemon = game.scene.getPlayerPokemon()!;
+    playerPokemon.level = 25; // tandemaus evolves at level 25
+    vi.spyOn(Utils, "randSeedInt").mockReturnValue(0); // setting the random generator to be 0 to force a three family maushold
+    const threeForm = playerPokemon.getEvolution()!;
+    expect(threeForm.evoFormKey).toBe("three"); // as per pokemon-forms, the evoFormKey for 3 family mausholds is "three"
+    for (let f = 1; f < 4; f++) {
+      vi.spyOn(Utils, "randSeedInt").mockReturnValue(f); // setting the random generator to 1, 2 and 3 to force 4 family mausholds
+      const fourForm = playerPokemon.getEvolution()!;
+      expect(fourForm.evoFormKey).toBe(null); // meanwhile, according to the pokemon-forms, the evoFormKey for a 4 family maushold is null
+    }
+  }, TIMEOUT);
 });
diff --git a/src/test/evolutions/evolutions.test.ts b/src/test/evolutions/evolutions.test.ts
deleted file mode 100644
index 2028764115c..00000000000
--- a/src/test/evolutions/evolutions.test.ts
+++ /dev/null
@@ -1,48 +0,0 @@
-import * as Utils from "#app/utils";
-import { Species } from "#enums/species";
-import GameManager from "#test/utils/gameManager";
-import Phaser from "phaser";
-import { afterEach, beforeAll, beforeEach, describe, expect, it, vi } from "vitest";
-
-describe("Evolution tests", () => {
-  let phaserGame: Phaser.Game;
-  let game: GameManager;
-
-  beforeAll(() => {
-    phaserGame = new Phaser.Game({
-      type: Phaser.HEADLESS,
-    });
-  });
-
-  afterEach(() => {
-    game.phaseInterceptor.restoreOg();
-  });
-
-  beforeEach(() => {
-    game = new GameManager(phaserGame);
-  });
-
-  it("tandemaus evolution form test", async () => {
-    /* this test checks to make sure that tandemaus will
-     * evolve into a 3 family maushold 25% of the time
-     * and a 4 family maushold the other 75% of the time
-     * This is done by using the getEvolution method in pokemon.ts
-     * getEvolution will give back the form that the pokemon can evolve into
-     * It does this by checking the pokemon conditions in pokemon-forms.ts
-     * For tandemaus, the conditions are random due to a randSeedInt(4)
-     * If the value is 0, it's a 3 family maushold, whereas if the value is
-     * 1, 2 or 3, it's a 4 family maushold
-     */
-    await game.startBattle([Species.TANDEMAUS]); // starts us off with a tandemaus
-    const playerPokemon = game.scene.getPlayerPokemon()!;
-    playerPokemon.level = 25; // tandemaus evolves at level 25
-    vi.spyOn(Utils, "randSeedInt").mockReturnValue(0); // setting the random generator to be 0 to force a three family maushold
-    const threeForm = playerPokemon.getEvolution()!;
-    expect(threeForm.evoFormKey).toBe("three"); // as per pokemon-forms, the evoFormKey for 3 family mausholds is "three"
-    for (let f = 1; f < 4; f++) {
-      vi.spyOn(Utils, "randSeedInt").mockReturnValue(f); // setting the random generator to 1, 2 and 3 to force 4 family mausholds
-      const fourForm = playerPokemon.getEvolution()!;
-      expect(fourForm.evoFormKey).toBe(null); // meanwhile, according to the pokemon-forms, the evoFormKey for a 4 family maushold is null
-    }
-  }, 5000);
-});
diff --git a/src/test/final_boss.test.ts b/src/test/final_boss.test.ts
index 0f59572619b..5d006998a0b 100644
--- a/src/test/final_boss.test.ts
+++ b/src/test/final_boss.test.ts
@@ -1,8 +1,13 @@
+import { StatusEffect } from "#app/data/status-effect";
+import { Abilities } from "#app/enums/abilities";
 import { Biome } from "#app/enums/biome";
+import { Moves } from "#app/enums/moves";
 import { Species } from "#app/enums/species";
 import { GameModes } from "#app/game-mode";
+import { TurnHeldItemTransferModifier } from "#app/modifier/modifier";
 import { afterEach, beforeAll, beforeEach, describe, expect, it } from "vitest";
 import GameManager from "./utils/gameManager";
+import { SPLASH_ONLY } from "./utils/testUtils";
 
 const FinalWave = {
   Classic: 200,
@@ -20,7 +25,13 @@ describe("Final Boss", () => {
 
   beforeEach(() => {
     game = new GameManager(phaserGame);
-    game.override.startingWave(FinalWave.Classic).startingBiome(Biome.END).disableCrits();
+    game.override
+      .startingWave(FinalWave.Classic)
+      .startingBiome(Biome.END)
+      .disableCrits()
+      .enemyMoveset(SPLASH_ONLY)
+      .moveset([ Moves.SPLASH, Moves.WILL_O_WISP, Moves.DRAGON_PULSE ])
+      .startingLevel(10000);
   });
 
   afterEach(() => {
@@ -28,7 +39,7 @@ describe("Final Boss", () => {
   });
 
   it("should spawn Eternatus on wave 200 in END biome", async () => {
-    await game.runToFinalBossEncounter(game, [Species.BIDOOF], GameModes.CLASSIC);
+    await game.runToFinalBossEncounter([Species.BIDOOF], GameModes.CLASSIC);
 
     expect(game.scene.currentBattle.waveIndex).toBe(FinalWave.Classic);
     expect(game.scene.arena.biomeType).toBe(Biome.END);
@@ -37,7 +48,7 @@ describe("Final Boss", () => {
 
   it("should NOT spawn Eternatus before wave 200 in END biome", async () => {
     game.override.startingWave(FinalWave.Classic - 1);
-    await game.runToFinalBossEncounter(game, [Species.BIDOOF], GameModes.CLASSIC);
+    await game.runToFinalBossEncounter([Species.BIDOOF], GameModes.CLASSIC);
 
     expect(game.scene.currentBattle.waveIndex).not.toBe(FinalWave.Classic);
     expect(game.scene.arena.biomeType).toBe(Biome.END);
@@ -46,7 +57,7 @@ describe("Final Boss", () => {
 
   it("should NOT spawn Eternatus outside of END biome", async () => {
     game.override.startingBiome(Biome.FOREST);
-    await game.runToFinalBossEncounter(game, [Species.BIDOOF], GameModes.CLASSIC);
+    await game.runToFinalBossEncounter([Species.BIDOOF], GameModes.CLASSIC);
 
     expect(game.scene.currentBattle.waveIndex).toBe(FinalWave.Classic);
     expect(game.scene.arena.biomeType).not.toBe(Biome.END);
@@ -54,12 +65,81 @@ describe("Final Boss", () => {
   });
 
   it("should not have passive enabled on Eternatus", async () => {
-    await game.runToFinalBossEncounter(game, [Species.BIDOOF], GameModes.CLASSIC);
+    await game.runToFinalBossEncounter([Species.BIDOOF], GameModes.CLASSIC);
 
-    const eternatus = game.scene.getEnemyPokemon();
-    expect(eternatus?.species.speciesId).toBe(Species.ETERNATUS);
-    expect(eternatus?.hasPassive()).toBe(false);
+    const eternatus = game.scene.getEnemyPokemon()!;
+    expect(eternatus.species.speciesId).toBe(Species.ETERNATUS);
+    expect(eternatus.hasPassive()).toBe(false);
+  });
+
+  it("should change form on direct hit down to last boss fragment", async () => {
+    await game.runToFinalBossEncounter([Species.KYUREM], GameModes.CLASSIC);
+    await game.phaseInterceptor.to("CommandPhase");
+
+    // Eternatus phase 1
+    const eternatus = game.scene.getEnemyPokemon()!;
+    const phase1Hp = eternatus.getMaxHp();
+    expect(eternatus.species.speciesId).toBe(Species.ETERNATUS);
+    expect(eternatus.formIndex).toBe(0);
+    expect(eternatus.bossSegments).toBe(4);
+    expect(eternatus.bossSegmentIndex).toBe(3);
+
+    game.move.select(Moves.DRAGON_PULSE);
+    await game.toNextTurn();
+
+    // Eternatus phase 2: changed form, healed and restored its shields
+    expect(eternatus.species.speciesId).toBe(Species.ETERNATUS);
+    expect(eternatus.hp).toBeGreaterThan(phase1Hp);
+    expect(eternatus.hp).toBe(eternatus.getMaxHp());
+    expect(eternatus.formIndex).toBe(1);
+    expect(eternatus.bossSegments).toBe(5);
+    expect(eternatus.bossSegmentIndex).toBe(4);
+    const miniBlackHole = eternatus.getHeldItems().find(m => m instanceof TurnHeldItemTransferModifier);
+    expect(miniBlackHole).toBeDefined();
+    expect(miniBlackHole?.stackCount).toBe(1);
+  });
+
+  it("should change form on status damage down to last boss fragment", async () => {
+    game.override.ability(Abilities.NO_GUARD);
+
+    await game.runToFinalBossEncounter([Species.BIDOOF], GameModes.CLASSIC);
+    await game.phaseInterceptor.to("CommandPhase");
+
+    // Eternatus phase 1
+    const eternatus = game.scene.getEnemyPokemon()!;
+    const phase1Hp = eternatus.getMaxHp();
+    expect(eternatus.species.speciesId).toBe(Species.ETERNATUS);
+    expect(eternatus.formIndex).toBe(0);
+    expect(eternatus.bossSegments).toBe(4);
+    expect(eternatus.bossSegmentIndex).toBe(3);
+
+    game.move.select(Moves.WILL_O_WISP);
+    await game.toNextTurn();
+    expect(eternatus.status?.effect).toBe(StatusEffect.BURN);
+
+    const tickDamage = phase1Hp - eternatus.hp;
+    const lastShieldHp = Math.ceil(phase1Hp / eternatus.bossSegments);
+    // Stall until the burn is one hit away from breaking the last shield
+    while (eternatus.hp - tickDamage > lastShieldHp) {
+      game.move.select(Moves.SPLASH);
+      await game.toNextTurn();
+    }
+
+    expect(eternatus.bossSegmentIndex).toBe(1);
+
+    game.move.select(Moves.SPLASH);
+    await game.toNextTurn();
+
+    // Eternatus phase 2: changed form, healed and restored its shields
+    expect(eternatus.hp).toBeGreaterThan(phase1Hp);
+    expect(eternatus.hp).toBe(eternatus.getMaxHp());
+    expect(eternatus.status).toBeFalsy();
+    expect(eternatus.formIndex).toBe(1);
+    expect(eternatus.bossSegments).toBe(5);
+    expect(eternatus.bossSegmentIndex).toBe(4);
+    const miniBlackHole = eternatus.getHeldItems().find(m => m instanceof TurnHeldItemTransferModifier);
+    expect(miniBlackHole).toBeDefined();
+    expect(miniBlackHole?.stackCount).toBe(1);
   });
 
-  it.todo("should change form on direct hit down to last boss fragment", () => {});
 });
diff --git a/src/test/utils/misc.test.ts b/src/test/misc.test.ts
similarity index 90%
rename from src/test/utils/misc.test.ts
rename to src/test/misc.test.ts
index d7c10144ead..1052a282a64 100644
--- a/src/test/utils/misc.test.ts
+++ b/src/test/misc.test.ts
@@ -30,7 +30,7 @@ describe("Test misc", () => {
       return response.json();
     }).then(data => {
       spy(); // Call the spy function
-      expect(data).toEqual({"username":"greenlamp", "lastSessionSlot":0});
+      expect(data).toEqual({ "username": "greenlamp", "lastSessionSlot": 0 });
     });
     expect(spy).toHaveBeenCalled();
   });
@@ -43,7 +43,7 @@ describe("Test misc", () => {
       return response.json();
     }).then(data => {
       spy(); // Call the spy function
-      expect(data).toEqual({"username":"greenlamp", "lastSessionSlot":0});
+      expect(data).toEqual({ "username": "greenlamp", "lastSessionSlot": 0 });
     });
     expect(spy).toHaveBeenCalled();
   });
@@ -54,7 +54,7 @@ describe("Test misc", () => {
 
     expect(response.ok).toBe(true);
     expect(response.status).toBe(200);
-    expect(data).toEqual({"username":"greenlamp", "lastSessionSlot":0});
+    expect(data).toEqual({ "username": "greenlamp", "lastSessionSlot": 0 });
   });
 
   it("test apifetch mock sync", async () => {
diff --git a/src/test/moves/alluring_voice.test.ts b/src/test/moves/alluring_voice.test.ts
new file mode 100644
index 00000000000..e6ece39524a
--- /dev/null
+++ b/src/test/moves/alluring_voice.test.ts
@@ -0,0 +1,54 @@
+import { BattlerIndex } from "#app/battle";
+import { Abilities } from "#app/enums/abilities";
+import { BattlerTagType } from "#app/enums/battler-tag-type";
+import { BerryPhase } from "#app/phases/berry-phase";
+import { Moves } from "#enums/moves";
+import { Species } from "#enums/species";
+import GameManager from "#test/utils/gameManager";
+import Phaser from "phaser";
+import { afterEach, beforeAll, beforeEach, describe, expect, it } from "vitest";
+
+const TIMEOUT = 20 * 1000;
+
+describe("Moves - Alluring Voice", () => {
+  let phaserGame: Phaser.Game;
+  let game: GameManager;
+
+  beforeAll(() => {
+    phaserGame = new Phaser.Game({
+      type: Phaser.HEADLESS,
+    });
+  });
+
+  afterEach(() => {
+    game.phaseInterceptor.restoreOg();
+  });
+
+  beforeEach(() => {
+    game = new GameManager(phaserGame);
+    game.override
+      .battleType("single")
+      .disableCrits()
+      .enemySpecies(Species.MAGIKARP)
+      .enemyAbility(Abilities.ICE_SCALES)
+      .enemyMoveset(Array(4).fill(Moves.HOWL))
+      .startingLevel(10)
+      .enemyLevel(10)
+      .starterSpecies(Species.FEEBAS)
+      .ability(Abilities.BALL_FETCH)
+      .moveset([Moves.ALLURING_VOICE]);
+
+  });
+
+  it("should confuse the opponent if their stats were raised", async () => {
+    await game.classicMode.startBattle();
+
+    const enemy = game.scene.getEnemyPokemon()!;
+
+    game.move.select(Moves.ALLURING_VOICE);
+    await game.setTurnOrder([BattlerIndex.ENEMY, BattlerIndex.PLAYER]);
+    await game.phaseInterceptor.to(BerryPhase);
+
+    expect(enemy.getTag(BattlerTagType.CONFUSED)?.tagType).toBe("CONFUSED");
+  }, TIMEOUT);
+});
diff --git a/src/test/moves/burning_jealousy.test.ts b/src/test/moves/burning_jealousy.test.ts
new file mode 100644
index 00000000000..2281fe74acb
--- /dev/null
+++ b/src/test/moves/burning_jealousy.test.ts
@@ -0,0 +1,103 @@
+import { BattlerIndex } from "#app/battle";
+import { allMoves } from "#app/data/move";
+import { Abilities } from "#app/enums/abilities";
+import { StatusEffect } from "#app/enums/status-effect";
+import { Moves } from "#enums/moves";
+import { Species } from "#enums/species";
+import GameManager from "#test/utils/gameManager";
+import Phaser from "phaser";
+import { afterEach, beforeAll, beforeEach, describe, expect, it, vi } from "vitest";
+import { SPLASH_ONLY } from "../utils/testUtils";
+
+const TIMEOUT = 20 * 1000;
+
+describe("Moves - Burning Jealousy", () => {
+  let phaserGame: Phaser.Game;
+  let game: GameManager;
+
+  beforeAll(() => {
+    phaserGame = new Phaser.Game({
+      type: Phaser.HEADLESS,
+    });
+  });
+
+  afterEach(() => {
+    game.phaseInterceptor.restoreOg();
+  });
+
+  beforeEach(() => {
+    game = new GameManager(phaserGame);
+    game.override
+      .battleType("single")
+      .disableCrits()
+      .enemySpecies(Species.MAGIKARP)
+      .enemyAbility(Abilities.ICE_SCALES)
+      .enemyMoveset(Array(4).fill(Moves.HOWL))
+      .startingLevel(10)
+      .enemyLevel(10)
+      .starterSpecies(Species.FEEBAS)
+      .ability(Abilities.BALL_FETCH)
+      .moveset([Moves.BURNING_JEALOUSY, Moves.GROWL]);
+
+  });
+
+  it("should burn the opponent if their stats were raised", async () => {
+    await game.classicMode.startBattle();
+
+    const enemy = game.scene.getEnemyPokemon()!;
+
+    game.move.select(Moves.BURNING_JEALOUSY);
+    await game.setTurnOrder([BattlerIndex.ENEMY, BattlerIndex.PLAYER]);
+    await game.phaseInterceptor.to("BerryPhase");
+
+    expect(enemy.status?.effect).toBe(StatusEffect.BURN);
+  }, TIMEOUT);
+
+  it("should still burn the opponent if their stats were both raised and lowered in the same turn", async () => {
+    game.override
+      .starterSpecies(0)
+      .battleType("double");
+    await game.classicMode.startBattle([Species.FEEBAS, Species.ABRA]);
+
+    const enemy = game.scene.getEnemyPokemon()!;
+
+    game.move.select(Moves.BURNING_JEALOUSY);
+    game.move.select(Moves.GROWL, 1);
+    await game.setTurnOrder([BattlerIndex.ENEMY, BattlerIndex.PLAYER_2, BattlerIndex.PLAYER, BattlerIndex.ENEMY_2]);
+    await game.phaseInterceptor.to("BerryPhase");
+
+    expect(enemy.status?.effect).toBe(StatusEffect.BURN);
+  }, TIMEOUT);
+
+  it("should ignore stats raised by imposter", async () => {
+    game.override
+      .enemySpecies(Species.DITTO)
+      .enemyAbility(Abilities.IMPOSTER)
+      .enemyMoveset(SPLASH_ONLY);
+    await game.classicMode.startBattle();
+
+    const enemy = game.scene.getEnemyPokemon()!;
+
+    game.move.select(Moves.BURNING_JEALOUSY);
+    await game.phaseInterceptor.to("BerryPhase");
+
+    expect(enemy.status?.effect).toBeUndefined();
+  }, TIMEOUT);
+
+  it.skip("should ignore weakness policy", async () => { // TODO: Make this test if WP is implemented
+    await game.classicMode.startBattle();
+  }, TIMEOUT);
+
+  it("should be boosted by Sheer Force even if opponent didn't raise stats", async () => {
+    game.override
+      .ability(Abilities.SHEER_FORCE)
+      .enemyMoveset(SPLASH_ONLY);
+    vi.spyOn(allMoves[Moves.BURNING_JEALOUSY], "calculateBattlePower");
+    await game.classicMode.startBattle();
+
+    game.move.select(Moves.BURNING_JEALOUSY);
+    await game.phaseInterceptor.to("BerryPhase");
+
+    expect(allMoves[Moves.BURNING_JEALOUSY].calculateBattlePower).toHaveReturnedWith(allMoves[Moves.BURNING_JEALOUSY].power * 5461 / 4096);
+  }, TIMEOUT);
+});
diff --git a/src/test/moves/lash_out.test.ts b/src/test/moves/lash_out.test.ts
new file mode 100644
index 00000000000..78f4b712cf0
--- /dev/null
+++ b/src/test/moves/lash_out.test.ts
@@ -0,0 +1,52 @@
+import { BattlerIndex } from "#app/battle";
+import { allMoves } from "#app/data/move";
+import { Abilities } from "#app/enums/abilities";
+import { Moves } from "#enums/moves";
+import { Species } from "#enums/species";
+import GameManager from "#test/utils/gameManager";
+import Phaser from "phaser";
+import { afterEach, beforeAll, beforeEach, describe, expect, it, vi } from "vitest";
+
+const TIMEOUT = 20 * 1000;
+
+describe("Moves - Lash Out", () => {
+  let phaserGame: Phaser.Game;
+  let game: GameManager;
+
+  beforeAll(() => {
+    phaserGame = new Phaser.Game({
+      type: Phaser.HEADLESS,
+    });
+  });
+
+  afterEach(() => {
+    game.phaseInterceptor.restoreOg();
+  });
+
+  beforeEach(() => {
+    game = new GameManager(phaserGame);
+    game.override
+      .battleType("single")
+      .disableCrits()
+      .enemySpecies(Species.MAGIKARP)
+      .enemyAbility(Abilities.FUR_COAT)
+      .enemyMoveset(Array(4).fill(Moves.GROWL))
+      .startingLevel(10)
+      .enemyLevel(10)
+      .starterSpecies(Species.FEEBAS)
+      .ability(Abilities.BALL_FETCH)
+      .moveset([Moves.LASH_OUT]);
+
+  });
+
+  it("should deal double damage if the user's stats were lowered this turn", async () => {
+    vi.spyOn(allMoves[Moves.LASH_OUT], "calculateBattlePower");
+    await game.classicMode.startBattle();
+
+    game.move.select(Moves.LASH_OUT);
+    await game.setTurnOrder([BattlerIndex.ENEMY, BattlerIndex.PLAYER]);
+    await game.phaseInterceptor.to("BerryPhase");
+
+    expect(allMoves[Moves.LASH_OUT].calculateBattlePower).toHaveReturnedWith(150);
+  }, TIMEOUT);
+});
diff --git a/src/test/moves/spikes.test.ts b/src/test/moves/spikes.test.ts
index c4096111c6f..05ea717ebbe 100644
--- a/src/test/moves/spikes.test.ts
+++ b/src/test/moves/spikes.test.ts
@@ -1,10 +1,10 @@
-import { CommandPhase } from "#app/phases/command-phase";
 import { Abilities } from "#enums/abilities";
 import { Moves } from "#enums/moves";
 import { Species } from "#enums/species";
 import GameManager from "#test/utils/gameManager";
 import Phaser from "phaser";
 import { afterEach, beforeAll, beforeEach, describe, expect, it } from "vitest";
+import { SPLASH_ONLY } from "../utils/testUtils";
 
 
 describe("Moves - Spikes", () => {
@@ -23,93 +23,61 @@ describe("Moves - Spikes", () => {
 
   beforeEach(() => {
     game = new GameManager(phaserGame);
-    game.scene.battleStyle = 1;
-    game.override.battleType("single");
-    game.override.enemySpecies(Species.RATTATA);
-    game.override.enemyAbility(Abilities.HYDRATION);
-    game.override.enemyPassiveAbility(Abilities.HYDRATION);
-    game.override.ability(Abilities.HYDRATION);
-    game.override.passiveAbility(Abilities.HYDRATION);
-    game.override.startingWave(3);
-    game.override.enemyMoveset([Moves.SPLASH, Moves.SPLASH, Moves.SPLASH, Moves.SPLASH]);
-    game.override.moveset([Moves.SPIKES, Moves.SPLASH, Moves.ROAR]);
+    game.override
+      .battleType("single")
+      .enemySpecies(Species.MAGIKARP)
+      .enemyAbility(Abilities.BALL_FETCH)
+      .ability(Abilities.BALL_FETCH)
+      .enemyMoveset(SPLASH_ONLY)
+      .moveset([Moves.SPIKES, Moves.SPLASH, Moves.ROAR]);
   });
 
-  it("single - wild - stay on field - no damage", async () => {
-    await game.classicMode.runToSummon([
-      Species.MIGHTYENA,
-      Species.POOCHYENA,
-    ]);
-    await game.phaseInterceptor.to(CommandPhase, true);
-    const initialHp = game.scene.getParty()[0].hp;
-    expect(game.scene.getParty()[0].hp).toBe(initialHp);
+  it("should not damage the team that set them", async () => {
+    await game.startBattle([Species.MIGHTYENA, Species.POOCHYENA]);
+
     game.move.select(Moves.SPIKES);
     await game.toNextTurn();
+
     game.move.select(Moves.SPLASH);
     await game.toNextTurn();
-    expect(game.scene.getParty()[0].hp).toBe(initialHp);
-  }, 20000);
-
-  it("single - wild - take some damage", async () => {
-    // player set spikes on the field and switch back to back
-    // opponent do splash for 2 turns
-    // nobody should take damage
-    await game.classicMode.runToSummon([
-      Species.MIGHTYENA,
-      Species.POOCHYENA,
-    ]);
-    await game.phaseInterceptor.to(CommandPhase, false);
-
-    const initialHp = game.scene.getParty()[0].hp;
-    game.doSwitchPokemon(1);
-    await game.phaseInterceptor.run(CommandPhase);
-    await game.phaseInterceptor.to(CommandPhase, false);
 
     game.doSwitchPokemon(1);
-    await game.phaseInterceptor.run(CommandPhase);
-    await game.phaseInterceptor.to(CommandPhase, false);
+    await game.toNextTurn();
 
-    expect(game.scene.getParty()[0].hp).toBe(initialHp);
+    game.doSwitchPokemon(1);
+    await game.toNextTurn();
+
+    const player = game.scene.getParty()[0];
+    expect(player.hp).toBe(player.getMaxHp());
   }, 20000);
 
-  it("trainer - wild - force switch opponent - should take damage", async () => {
+  it("should damage opposing pokemon that are forced to switch in", async () => {
     game.override.startingWave(5);
-    // player set spikes on the field and do splash for 3 turns
-    // opponent do splash for 4 turns
-    // nobody should take damage
-    await game.classicMode.runToSummon([
-      Species.MIGHTYENA,
-      Species.POOCHYENA,
-    ]);
-    await game.phaseInterceptor.to(CommandPhase, true);
-    const initialHpOpponent = game.scene.currentBattle.enemyParty[1].hp;
+    await game.startBattle([Species.MIGHTYENA, Species.POOCHYENA]);
+
     game.move.select(Moves.SPIKES);
     await game.toNextTurn();
+
     game.move.select(Moves.ROAR);
     await game.toNextTurn();
-    expect(game.scene.currentBattle.enemyParty[0].hp).toBeLessThan(initialHpOpponent);
+
+    const enemy = game.scene.getEnemyParty()[0];
+    expect(enemy.hp).toBeLessThan(enemy.getMaxHp());
   }, 20000);
 
-  it("trainer - wild - force switch by himself opponent - should take damage", async () => {
+  it("should damage opposing pokemon that choose to switch in", async () => {
     game.override.startingWave(5);
-    game.override.startingLevel(5000);
-    game.override.enemySpecies(0);
-    // turn 1: player set spikes, opponent do splash
-    // turn 2: player do splash, opponent switch pokemon
-    // opponent pokemon should trigger spikes and lose HP
-    await game.classicMode.runToSummon([
-      Species.MIGHTYENA,
-      Species.POOCHYENA,
-    ]);
-    await game.phaseInterceptor.to(CommandPhase, true);
-    const initialHpOpponent = game.scene.currentBattle.enemyParty[1].hp;
+    await game.startBattle([Species.MIGHTYENA, Species.POOCHYENA]);
+
     game.move.select(Moves.SPIKES);
     await game.toNextTurn();
 
-    game.forceOpponentToSwitch();
     game.move.select(Moves.SPLASH);
+    game.forceOpponentToSwitch();
     await game.toNextTurn();
-    expect(game.scene.currentBattle.enemyParty[0].hp).toBeLessThan(initialHpOpponent);
+
+    const enemy = game.scene.getEnemyParty()[0];
+    expect(enemy.hp).toBeLessThan(enemy.getMaxHp());
   }, 20000);
 
 });
diff --git a/src/test/utils/gameManager.ts b/src/test/utils/gameManager.ts
index 5818244db8f..6724e05521c 100644
--- a/src/test/utils/gameManager.ts
+++ b/src/test/utils/gameManager.ts
@@ -6,6 +6,7 @@ import { EnemyPokemon, PlayerPokemon } from "#app/field/pokemon";
 import Trainer from "#app/field/trainer";
 import { GameModes, getGameMode } from "#app/game-mode";
 import { ModifierTypeOption, modifierTypes } from "#app/modifier/modifier-type";
+import overrides from "#app/overrides";
 import { CommandPhase } from "#app/phases/command-phase";
 import { EncounterPhase } from "#app/phases/encounter-phase";
 import { FaintPhase } from "#app/phases/faint-phase";
@@ -138,7 +139,7 @@ export default class GameManager {
     this.scene.hpBarSpeed = 3;
     this.scene.enableTutorials = false;
     this.scene.gameData.gender = PlayerGender.MALE; // set initial player gender
-
+    this.scene.battleStyle = this.settings.battleStyle;
   }
 
   /**
@@ -148,28 +149,26 @@ export default class GameManager {
    * @param species
    * @param mode
    */
-  async runToFinalBossEncounter(game: GameManager, species: Species[], mode: GameModes) {
+  async runToFinalBossEncounter(species: Species[], mode: GameModes) {
     console.log("===to final boss encounter===");
-    await game.runToTitle();
+    await this.runToTitle();
 
-    game.onNextPrompt("TitlePhase", Mode.TITLE, () => {
-      game.scene.gameMode = getGameMode(mode);
-      const starters = generateStarter(game.scene, species);
-      const selectStarterPhase = new SelectStarterPhase(game.scene);
-      game.scene.pushPhase(new EncounterPhase(game.scene, false));
+    this.onNextPrompt("TitlePhase", Mode.TITLE, () => {
+      this.scene.gameMode = getGameMode(mode);
+      const starters = generateStarter(this.scene, species);
+      const selectStarterPhase = new SelectStarterPhase(this.scene);
+      this.scene.pushPhase(new EncounterPhase(this.scene, false));
       selectStarterPhase.initBattle(starters);
     });
 
-    game.onNextPrompt("EncounterPhase", Mode.MESSAGE, async () => {
-      // This will skip all entry dialogue (I can't figure out a way to sequentially handle the 8 chained messages via 1 prompt handler)
-      game.setMode(Mode.MESSAGE);
-      const encounterPhase = game.scene.getCurrentPhase() as EncounterPhase;
+    // This will consider all battle entry dialog as seens and skip them
+    vi.spyOn(this.scene.ui, "shouldSkipDialogue").mockReturnValue(true);
 
-      // No need to end phase, this will do it for you
-      encounterPhase.doEncounterCommon(false);
-    });
+    if (overrides.OPP_HELD_ITEMS_OVERRIDE.length === 0) {
+      this.removeEnemyHeldItems();
+    }
 
-    await game.phaseInterceptor.to(EncounterPhase, true);
+    await this.phaseInterceptor.to(EncounterPhase);
     console.log("===finished run to final boss encounter===");
   }
 
diff --git a/src/test/utils/helpers/settingsHelper.ts b/src/test/utils/helpers/settingsHelper.ts
index 76ffafdbe10..8fca2a34d47 100644
--- a/src/test/utils/helpers/settingsHelper.ts
+++ b/src/test/utils/helpers/settingsHelper.ts
@@ -1,16 +1,30 @@
 import { PlayerGender } from "#app/enums/player-gender";
+import { BattleStyle } from "#app/enums/battle-style";
 import { GameManagerHelper } from "./gameManagerHelper";
 
 /**
  * Helper to handle settings for tests
  */
 export class SettingsHelper extends GameManagerHelper {
+  private _battleStyle: BattleStyle = BattleStyle.SET;
+
+  get battleStyle(): BattleStyle {
+    return this._battleStyle;
+  }
+
+  /**
+   * Change the battle style to Switch or Set mode (tests default to {@linkcode BattleStyle.SET})
+   * @param mode {@linkcode BattleStyle.SWITCH} or {@linkcode BattleStyle.SET}
+   */
+  set battleStyle(mode: BattleStyle.SWITCH | BattleStyle.SET) {
+    this._battleStyle = mode;
+  }
 
   /**
    * Disable/Enable type hints settings
    * @param enable true to enabled, false to disabled
    */
-  typeHints(enable: boolean) {
+  typeHints(enable: boolean): void {
     this.game.scene.typeHints = enable;
     this.log(`Type Hints ${enable? "enabled" : "disabled"}` );
   }
diff --git a/src/ui/ui.ts b/src/ui/ui.ts
index 7108a8dd480..8ec91b59480 100644
--- a/src/ui/ui.ts
+++ b/src/ui/ui.ts
@@ -317,10 +317,11 @@ export default class UI extends Phaser.GameObjects.Container {
     if (i18next.exists(keyOrText) ) {
       const i18nKey = keyOrText;
       hasi18n = true;
+
       text = i18next.t(i18nKey, { context: genderStr }); // override text with translation
 
       // Skip dialogue if the player has enabled the option and the dialogue has been already seen
-      if (battleScene.skipSeenDialogues && battleScene.gameData.getSeenDialogues()[i18nKey] === true) {
+      if (this.shouldSkipDialogue(i18nKey)) {
         console.log(`Dialogue ${i18nKey} skipped`);
         callback();
         return;