merge up to date

public/images/items.json

@@ -3416,12 +3416,12 @@
 					"rotated": false,
 					"trimmed": true,
 					"sourceSize": {
-						"w": 24,
+						"w": 32,
-						"h": 24
+						"h": 32
 					},
 					"spriteSourceSize": {
-						"x": 1,
+						"x": 5,
-						"y": 2,
+						"y": 7,
 						"w": 22,
 						"h": 19
 					},
@@ -8415,6 +8415,6 @@
 	"meta": {
 		"app": "https://www.codeandweb.com/texturepacker",
 		"version": "3.0",
-		"smartupdate": "$TexturePacker:SmartUpdate:934ea4080bad980d4fea720cc771f133:ed564bc47b79b15a763de57045178e88:110e074689c9edd2c54833ce2e4d9270$"
+		"smartupdate": "$TexturePacker:SmartUpdate:9ef21166268f7487fc9ff8d0f9b996e4:82658ac7bdd4c2b417e1f59168179262:110e074689c9edd2c54833ce2e4d9270$"
 	}
 }

src/battle-scene.ts

@@ -86,7 +86,7 @@ import { ToggleDoublePositionPhase } from "#app/phases/toggle-double-position-ph
 import { TurnInitPhase } from "#app/phases/turn-init-phase";
 import { ShopCursorTarget } from "#app/enums/shop-cursor-target";
 import MysteryEncounter from "#app/data/mystery-encounters/mystery-encounter";
-import { allMysteryEncounters, ANTI_VARIANCE_WEIGHT_MODIFIER, AVERAGE_ENCOUNTERS_PER_RUN_TARGET, BASE_MYSTERY_ENCOUNTER_SPAWN_WEIGHT, MYSTERY_ENCOUNTER_SPAWN_MAX_WEIGHT, mysteryEncountersByBiome, WEIGHT_INCREMENT_ON_SPAWN_MISS } from "#app/data/mystery-encounters/mystery-encounters";
+import { allMysteryEncounters, ANTI_VARIANCE_WEIGHT_MODIFIER, AVERAGE_ENCOUNTERS_PER_RUN_TARGET, BASE_MYSTERY_ENCOUNTER_SPAWN_WEIGHT, MYSTERY_ENCOUNTER_SPAWN_MAX_WEIGHT, mysteryEncountersByBiome } from "#app/data/mystery-encounters/mystery-encounters";
 import { MysteryEncounterSaveData } from "#app/data/mystery-encounters/mystery-encounter-save-data";
 import { MysteryEncounterType } from "#enums/mystery-encounter-type";
 import { MysteryEncounterTier } from "#enums/mystery-encounter-tier";
@@ -1191,10 +1191,7 @@ export default class BattleScene extends SceneBase {
         if (trainerConfigs[trainerType].doubleOnly) {
           doubleTrainer = true;
         } else if (trainerConfigs[trainerType].hasDouble) {
-          const doubleChance = new Utils.IntegerHolder(newWaveIndex % 10 === 0 ? 32 : 8);
+          doubleTrainer = !Utils.randSeedInt(this.getDoubleBattleChance(newWaveIndex, playerField));
-          this.applyModifiers(DoubleBattleChanceBoosterModifier, true, doubleChance);
-          playerField.forEach(p => applyAbAttrs(DoubleBattleChanceAbAttr, p, null, false, doubleChance));
-          doubleTrainer = !Utils.randSeedInt(doubleChance.value);
           // Add a check that special trainers can't be double except for tate and liza - they should use the normal double chance
           if (trainerConfigs[trainerType].trainerTypeDouble && ![ TrainerType.TATE, TrainerType.LIZA ].includes(trainerType)) {
             doubleTrainer = false;
@@ -1207,12 +1204,10 @@ export default class BattleScene extends SceneBase {
 
       // Check for mystery encounter
       // Can only occur in place of a standard (non-boss) wild battle, waves 10-180
-      if (this.isWaveMysteryEncounter(newBattleType, newWaveIndex, mysteryEncounterType) || newBattleType === BattleType.MYSTERY_ENCOUNTER) {
+      if (this.isWaveMysteryEncounter(newBattleType, newWaveIndex) || newBattleType === BattleType.MYSTERY_ENCOUNTER) {
         newBattleType = BattleType.MYSTERY_ENCOUNTER;
-        // Reset base spawn weight
+        // Reset to base spawn weight
         this.mysteryEncounterSaveData.encounterSpawnChance = BASE_MYSTERY_ENCOUNTER_SPAWN_WEIGHT;
-      } else if (newBattleType === BattleType.WILD) {
-        this.mysteryEncounterSaveData.encounterSpawnChance += WEIGHT_INCREMENT_ON_SPAWN_MISS;
       }
     }
 
@@ -2364,6 +2359,19 @@ export default class BattleScene extends SceneBase {
     return false;
   }
 
+  /**
+   * Will search for a specific phase in {@linkcode phaseQueuePrepend} via filter, and remove the first result if a match is found.
+   * @param phaseFilter filter function
+   */
+  tryRemoveUnshiftedPhase(phaseFilter: (phase: Phase) => boolean): boolean {
+    const phaseIndex = this.phaseQueuePrepend.findIndex(phaseFilter);
+    if (phaseIndex > -1) {
+      this.phaseQueuePrepend.splice(phaseIndex, 1);
+      return true;
+    }
+    return false;
+  }
+
   /**
    * Tries to add the input phase to index before target phase in the phaseQueue, else simply calls unshiftPhase()
    * @param phase {@linkcode Phase} the phase to be added
@@ -3125,18 +3133,26 @@ export default class BattleScene extends SceneBase {
     }
   }
 
+  /**
+   * Returns if a wave COULD spawn a {@linkcode MysteryEncounter}.
+   * Even if returns `true`, does not guarantee that a wave will actually be a ME.
+   * That check is made in {@linkcode BattleScene.isWaveMysteryEncounter} instead.
+   */
+  isMysteryEncounterValidForWave(battleType: BattleType, waveIndex: number): boolean {
+    const [ lowestMysteryEncounterWave, highestMysteryEncounterWave ] = this.gameMode.getMysteryEncounterLegalWaves();
+    return this.gameMode.hasMysteryEncounters && battleType === BattleType.WILD && !this.gameMode.isBoss(waveIndex) && waveIndex < highestMysteryEncounterWave && waveIndex > lowestMysteryEncounterWave;
+  }
+
   /**
    * Determines whether a wave should randomly generate a {@linkcode MysteryEncounter}.
    * Currently, the only modes that MEs are allowed in are Classic and Challenge.
    * Additionally, MEs cannot spawn outside of waves 10-180 in those modes
-   *
    * @param newBattleType
    * @param waveIndex
-   * @param sessionDataEncounterType
    */
-  private isWaveMysteryEncounter(newBattleType: BattleType, waveIndex: number, sessionDataEncounterType?: MysteryEncounterType): boolean {
+  private isWaveMysteryEncounter(newBattleType: BattleType, waveIndex: number): boolean {
     const [ lowestMysteryEncounterWave, highestMysteryEncounterWave ] = this.gameMode.getMysteryEncounterLegalWaves();
-    if (this.gameMode.hasMysteryEncounters && newBattleType === BattleType.WILD && !this.gameMode.isBoss(waveIndex) && waveIndex < highestMysteryEncounterWave && waveIndex > lowestMysteryEncounterWave) {
+    if (this.isMysteryEncounterValidForWave(newBattleType, waveIndex)) {
       // Base spawn weight is BASE_MYSTERY_ENCOUNTER_SPAWN_WEIGHT/256, and increases by WEIGHT_INCREMENT_ON_SPAWN_MISS/256 for each missed attempt at spawning an encounter on a valid floor
       const sessionEncounterRate = this.mysteryEncounterSaveData.encounterSpawnChance;
       const encounteredEvents = this.mysteryEncounterSaveData.encounteredEvents;

src/data/ability.ts

@@ -4355,6 +4355,30 @@ export class AlwaysHitAbAttr extends AbAttr { }
 /** Attribute for abilities that allow moves that make contact to ignore protection (i.e. Unseen Fist) */
 export class IgnoreProtectOnContactAbAttr extends AbAttr { }
 
+/**
+ * Attribute implementing the effects of {@link https://bulbapedia.bulbagarden.net/wiki/Infiltrator_(Ability) | Infiltrator}.
+ * Allows the source's moves to bypass the effects of opposing Light Screen, Reflect, Aurora Veil, Safeguard, Mist, and Substitute.
+ */
+export class InfiltratorAbAttr extends AbAttr {
+  /**
+   * Sets a flag to bypass screens, Substitute, Safeguard, and Mist
+   * @param pokemon n/a
+   * @param passive n/a
+   * @param simulated n/a
+   * @param cancelled n/a
+   * @param args `[0]` a {@linkcode Utils.BooleanHolder | BooleanHolder} containing the flag
+   * @returns `true` if the bypass flag was successfully set; `false` otherwise.
+   */
+  override apply(pokemon: Pokemon, passive: boolean, simulated: boolean, cancelled: null, args: any[]): boolean {
+    const bypassed = args[0];
+    if (args[0] instanceof Utils.BooleanHolder) {
+      bypassed.value = true;
+      return true;
+    }
+    return false;
+  }
+}
+
 export class UncopiableAbilityAbAttr extends AbAttr {
   constructor() {
     super(false);
@@ -5440,7 +5464,8 @@ export function initAbilities() {
       .attr(PostSummonTransformAbAttr)
       .attr(UncopiableAbilityAbAttr),
     new Ability(Abilities.INFILTRATOR, 5)
-      .unimplemented(),
+      .attr(InfiltratorAbAttr)
+      .partial(), // does not bypass Mist
     new Ability(Abilities.MUMMY, 5)
       .attr(PostDefendAbilityGiveAbAttr, Abilities.MUMMY)
       .bypassFaint(),

src/data/arena-tag.ts

@@ -7,7 +7,7 @@ import { getPokemonNameWithAffix } from "#app/messages";
 import Pokemon, { HitResult, PokemonMove } from "#app/field/pokemon";
 import { StatusEffect } from "#app/data/status-effect";
 import { BattlerIndex } from "#app/battle";
-import { BlockNonDirectDamageAbAttr, ChangeMovePriorityAbAttr, ProtectStatAbAttr, applyAbAttrs } from "#app/data/ability";
+import { BlockNonDirectDamageAbAttr, ChangeMovePriorityAbAttr, InfiltratorAbAttr, ProtectStatAbAttr, applyAbAttrs } from "#app/data/ability";
 import { Stat } from "#enums/stat";
 import { CommonAnim, CommonBattleAnim } from "#app/data/battle-anims";
 import i18next from "i18next";
@@ -130,7 +130,18 @@ export class MistTag extends ArenaTag {
    * to flag the stat reduction as cancelled
    * @returns `true` if a stat reduction was cancelled; `false` otherwise
    */
-  override apply(arena: Arena, simulated: boolean, cancelled: BooleanHolder): boolean {
+  override apply(arena: Arena, simulated: boolean, attacker: Pokemon, cancelled: BooleanHolder): boolean {
+    // `StatStageChangePhase` currently doesn't have a reference to the source of stat drops,
+    // so this code currently has no effect on gameplay.
+    if (attacker) {
+      const bypassed = new BooleanHolder(false);
+      // TODO: Allow this to be simulated
+      applyAbAttrs(InfiltratorAbAttr, attacker, null, false, bypassed);
+      if (bypassed.value) {
+        return false;
+      }
+    }
+
     cancelled.value = true;
 
     if (!simulated) {
@@ -169,12 +180,18 @@ export class WeakenMoveScreenTag extends ArenaTag {
    *
    * @param arena the {@linkcode Arena} where the move is applied.
    * @param simulated n/a
+   * @param attacker the attacking {@linkcode Pokemon}
    * @param moveCategory the attacking move's {@linkcode MoveCategory}.
    * @param damageMultiplier A {@linkcode NumberHolder} containing the damage multiplier
    * @returns `true` if the attacking move was weakened; `false` otherwise.
    */
-  override apply(arena: Arena, simulated: boolean, moveCategory: MoveCategory, damageMultiplier: NumberHolder): boolean {
+  override apply(arena: Arena, simulated: boolean, attacker: Pokemon, moveCategory: MoveCategory, damageMultiplier: NumberHolder): boolean {
     if (this.weakenedCategories.includes(moveCategory)) {
+      const bypassed = new BooleanHolder(false);
+      applyAbAttrs(InfiltratorAbAttr, attacker, null, false, bypassed);
+      if (bypassed.value) {
+        return false;
+      }
       damageMultiplier.value = arena.scene.currentBattle.double ? 2732 / 4096 : 0.5;
       return true;
     }
@@ -626,7 +643,7 @@ export class ArenaTrapTag extends ArenaTag {
    * @returns `true` if this hazard affects the given Pokemon; `false` otherwise.
    */
   override apply(arena: Arena, simulated: boolean, pokemon: Pokemon): boolean {
-    if (this.sourceId === pokemon.id || (this.side === ArenaTagSide.PLAYER) !== pokemon.isPlayer()) {
+    if ((this.side === ArenaTagSide.PLAYER) !== pokemon.isPlayer()) {
       return false;
     }
 

src/data/battler-tags.ts

@@ -1,29 +1,44 @@
-import { ChargeAnim, CommonAnim, CommonBattleAnim, MoveChargeAnim } from "./battle-anims";
+import BattleScene from "#app/battle-scene";
-import { getPokemonNameWithAffix } from "../messages";
+import {
-import Pokemon, { MoveResult, HitResult } from "../field/pokemon";
+  allAbilities,
-import { StatusEffect } from "./status-effect";
+  applyAbAttrs,
-import * as Utils from "../utils";
+  BlockNonDirectDamageAbAttr,
-import { ChargeAttr, MoveFlags, allMoves, MoveCategory, applyMoveAttrs, StatusCategoryOnAllyAttr, HealOnAllyAttr, ConsecutiveUseDoublePowerAttr } from "./move";
+  FlinchEffectAbAttr,
-import { Type } from "./type";
+  ProtectStatAbAttr,
-import { BlockNonDirectDamageAbAttr, FlinchEffectAbAttr, ReverseDrainAbAttr, applyAbAttrs, ProtectStatAbAttr } from "./ability";
+  ReverseDrainAbAttr
-import { TerrainType } from "./terrain";
+} from "#app/data/ability";
-import { WeatherType } from "./weather";
+import { ChargeAnim, CommonAnim, CommonBattleAnim, MoveChargeAnim } from "#app/data/battle-anims";
-import { allAbilities } from "./ability";
+import Move, {
-import { SpeciesFormChangeManualTrigger } from "./pokemon-forms";
+  allMoves,
-import { Abilities } from "#enums/abilities";
+  applyMoveAttrs,
-import { BattlerTagType } from "#enums/battler-tag-type";
+  ChargeAttr,
-import { Moves } from "#enums/moves";
+  ConsecutiveUseDoublePowerAttr,
-import { Species } from "#enums/species";
+  HealOnAllyAttr,
-import i18next from "#app/plugins/i18n";
+  MoveCategory,
-import { Stat, type BattleStat, type EffectiveStat, EFFECTIVE_STATS, getStatKey } from "#app/enums/stat";
+  MoveFlags,
+  StatusCategoryOnAllyAttr
+} from "#app/data/move";
+import { SpeciesFormChangeManualTrigger } from "#app/data/pokemon-forms";
+import { StatusEffect } from "#app/data/status-effect";
+import { TerrainType } from "#app/data/terrain";
+import { Type } from "#app/data/type";
+import { WeatherType } from "#app/data/weather";
+import Pokemon, { HitResult, MoveResult } from "#app/field/pokemon";
+import { getPokemonNameWithAffix } from "#app/messages";
 import { CommonAnimPhase } from "#app/phases/common-anim-phase";
 import { MoveEffectPhase } from "#app/phases/move-effect-phase";
 import { MovePhase } from "#app/phases/move-phase";
 import { PokemonHealPhase } from "#app/phases/pokemon-heal-phase";
 import { ShowAbilityPhase } from "#app/phases/show-ability-phase";
-import { StatStageChangePhase, StatStageChangeCallback } from "#app/phases/stat-stage-change-phase";
+import { StatStageChangeCallback, StatStageChangePhase } from "#app/phases/stat-stage-change-phase";
-import { PokemonAnimType } from "#app/enums/pokemon-anim-type";
+import i18next from "#app/plugins/i18n";
-import BattleScene from "#app/battle-scene";
+import { BooleanHolder, getFrameMs, NumberHolder, toDmgValue } from "#app/utils";
+import { Abilities } from "#enums/abilities";
+import { BattlerTagType } from "#enums/battler-tag-type";
+import { Moves } from "#enums/moves";
+import { PokemonAnimType } from "#enums/pokemon-anim-type";
+import { Species } from "#enums/species";
+import { EFFECTIVE_STATS, getStatKey, Stat, type BattleStat, type EffectiveStat } from "#enums/stat";
 
 export enum BattlerTagLapseType {
   FAINT,
@@ -33,6 +48,7 @@ export enum BattlerTagLapseType {
   MOVE_EFFECT,
   TURN_END,
   HIT,
+  AFTER_HIT,
   CUSTOM
 }
 
@@ -405,7 +421,7 @@ export class RechargingTag extends BattlerTag {
  */
 export class BeakBlastChargingTag extends BattlerTag {
   constructor() {
-    super(BattlerTagType.BEAK_BLAST_CHARGING, [ BattlerTagLapseType.PRE_MOVE, BattlerTagLapseType.TURN_END ], 1, Moves.BEAK_BLAST);
+    super(BattlerTagType.BEAK_BLAST_CHARGING, [ BattlerTagLapseType.PRE_MOVE, BattlerTagLapseType.TURN_END, BattlerTagLapseType.AFTER_HIT ], 1, Moves.BEAK_BLAST);
   }
 
   onAdd(pokemon: Pokemon): void {
@@ -421,16 +437,13 @@ export class BeakBlastChargingTag extends BattlerTag {
    * to be removed after the source makes a move (or the turn ends, whichever comes first)
    * @param pokemon {@linkcode Pokemon} the owner of this tag
    * @param lapseType {@linkcode BattlerTagLapseType} the type of functionality invoked in battle
-   * @returns `true` if invoked with the CUSTOM lapse type; `false` otherwise
+   * @returns `true` if invoked with the `AFTER_HIT` lapse type
    */
   lapse(pokemon: Pokemon, lapseType: BattlerTagLapseType): boolean {
-    if (lapseType === BattlerTagLapseType.CUSTOM) {
+    if (lapseType === BattlerTagLapseType.AFTER_HIT) {
-      const effectPhase = pokemon.scene.getCurrentPhase();
+      const phaseData = getMoveEffectPhaseData(pokemon);
-      if (effectPhase instanceof MoveEffectPhase) {
+      if (phaseData?.move.hasFlag(MoveFlags.MAKES_CONTACT)) {
-        const attacker = effectPhase.getPokemon();
+        phaseData.attacker.trySetStatus(StatusEffect.BURN, true, pokemon);
-        if (effectPhase.move.getMove().checkFlag(MoveFlags.MAKES_CONTACT, attacker, pokemon)) {
-          attacker.trySetStatus(StatusEffect.BURN, true, pokemon);
-        }
       }
       return true;
     }
@@ -444,11 +457,10 @@ export class BeakBlastChargingTag extends BattlerTag {
  * @see {@link https://bulbapedia.bulbagarden.net/wiki/Shell_Trap_(move) | Shell Trap}
  */
 export class ShellTrapTag extends BattlerTag {
-  public activated: boolean;
+  public activated: boolean = false;
 
   constructor() {
-    super(BattlerTagType.SHELL_TRAP, BattlerTagLapseType.TURN_END, 1);
+    super(BattlerTagType.SHELL_TRAP, [ BattlerTagLapseType.TURN_END, BattlerTagLapseType.AFTER_HIT ], 1);
-    this.activated = false;
   }
 
   onAdd(pokemon: Pokemon): void {
@@ -459,25 +471,33 @@ export class ShellTrapTag extends BattlerTag {
    * "Activates" the shell trap, causing the tag owner to move next.
    * @param pokemon {@linkcode Pokemon} the owner of this tag
    * @param lapseType {@linkcode BattlerTagLapseType} the type of functionality invoked in battle
-   * @returns `true` if invoked with the `CUSTOM` lapse type; `false` otherwise
+   * @returns `true` if invoked with the `AFTER_HIT` lapse type
    */
   lapse(pokemon: Pokemon, lapseType: BattlerTagLapseType): boolean {
-    if (lapseType === BattlerTagLapseType.CUSTOM) {
+    if (lapseType === BattlerTagLapseType.AFTER_HIT) {
-      const shellTrapPhaseIndex = pokemon.scene.phaseQueue.findIndex(
+      const phaseData = getMoveEffectPhaseData(pokemon);
-        phase => phase instanceof MovePhase && phase.pokemon === pokemon
-      );
-      const firstMovePhaseIndex = pokemon.scene.phaseQueue.findIndex(
-        phase => phase instanceof MovePhase
-      );
 
-      if (shellTrapPhaseIndex !== -1 && shellTrapPhaseIndex !== firstMovePhaseIndex) {
+      // Trap should only be triggered by opponent's Physical moves
-        const shellTrapMovePhase = pokemon.scene.phaseQueue.splice(shellTrapPhaseIndex, 1)[0];
+      if (phaseData?.move.category === MoveCategory.PHYSICAL && pokemon.isOpponent(phaseData.attacker)) {
-        pokemon.scene.prependToPhase(shellTrapMovePhase, MovePhase);
+        const shellTrapPhaseIndex = pokemon.scene.phaseQueue.findIndex(
+          phase => phase instanceof MovePhase && phase.pokemon === pokemon
+        );
+        const firstMovePhaseIndex = pokemon.scene.phaseQueue.findIndex(
+          phase => phase instanceof MovePhase
+        );
+
+        // Only shift MovePhase timing if it's not already next up
+        if (shellTrapPhaseIndex !== -1 && shellTrapPhaseIndex !== firstMovePhaseIndex) {
+          const shellTrapMovePhase = pokemon.scene.phaseQueue.splice(shellTrapPhaseIndex, 1)[0];
+          pokemon.scene.prependToPhase(shellTrapMovePhase, MovePhase);
+        }
+
+        this.activated = true;
       }
 
-      this.activated = true;
       return true;
     }
+
     return super.lapse(pokemon, lapseType);
   }
 }
@@ -641,7 +661,7 @@ export class ConfusedTag extends BattlerTag {
       if (pokemon.randSeedInt(3) === 0) {
         const atk = pokemon.getEffectiveStat(Stat.ATK);
         const def = pokemon.getEffectiveStat(Stat.DEF);
-        const damage = Utils.toDmgValue(((((2 * pokemon.level / 5 + 2) * 40 * atk / def) / 50) + 2) * (pokemon.randSeedIntRange(85, 100) / 100));
+        const damage = toDmgValue(((((2 * pokemon.level / 5 + 2) * 40 * atk / def) / 50) + 2) * (pokemon.randSeedIntRange(85, 100) / 100));
         pokemon.scene.queueMessage(i18next.t("battlerTags:confusedLapseHurtItself"));
         pokemon.damageAndUpdate(damage);
         pokemon.battleData.hitCount++;
@@ -812,13 +832,13 @@ export class SeedTag extends BattlerTag {
     if (ret) {
       const source = pokemon.getOpponents().find(o => o.getBattlerIndex() === this.sourceIndex);
       if (source) {
-        const cancelled = new Utils.BooleanHolder(false);
+        const cancelled = new BooleanHolder(false);
         applyAbAttrs(BlockNonDirectDamageAbAttr, pokemon, cancelled);
 
         if (!cancelled.value) {
           pokemon.scene.unshiftPhase(new CommonAnimPhase(pokemon.scene, source.getBattlerIndex(), pokemon.getBattlerIndex(), CommonAnim.LEECH_SEED));
 
-          const damage = pokemon.damageAndUpdate(Utils.toDmgValue(pokemon.getMaxHp() / 8));
+          const damage = pokemon.damageAndUpdate(toDmgValue(pokemon.getMaxHp() / 8));
           const reverseDrain = pokemon.hasAbilityWithAttr(ReverseDrainAbAttr, false);
           pokemon.scene.unshiftPhase(new PokemonHealPhase(pokemon.scene, source.getBattlerIndex(),
             !reverseDrain ? damage : damage * -1,
@@ -838,7 +858,7 @@ export class SeedTag extends BattlerTag {
 
 export class NightmareTag extends BattlerTag {
   constructor() {
-    super(BattlerTagType.NIGHTMARE, BattlerTagLapseType.AFTER_MOVE, 1, Moves.NIGHTMARE);
+    super(BattlerTagType.NIGHTMARE, BattlerTagLapseType.TURN_END, 1, Moves.NIGHTMARE);
   }
 
   onAdd(pokemon: Pokemon): void {
@@ -860,11 +880,11 @@ export class NightmareTag extends BattlerTag {
       pokemon.scene.queueMessage(i18next.t("battlerTags:nightmareLapse", { pokemonNameWithAffix: getPokemonNameWithAffix(pokemon) }));
       pokemon.scene.unshiftPhase(new CommonAnimPhase(pokemon.scene, pokemon.getBattlerIndex(), undefined, CommonAnim.CURSE)); // TODO: Update animation type
 
-      const cancelled = new Utils.BooleanHolder(false);
+      const cancelled = new BooleanHolder(false);
       applyAbAttrs(BlockNonDirectDamageAbAttr, pokemon, cancelled);
 
       if (!cancelled.value) {
-        pokemon.damageAndUpdate(Utils.toDmgValue(pokemon.getMaxHp() / 4));
+        pokemon.damageAndUpdate(toDmgValue(pokemon.getMaxHp() / 4));
       }
     }
 
@@ -1004,7 +1024,7 @@ export class IngrainTag extends TrappedTag {
         new PokemonHealPhase(
           pokemon.scene,
           pokemon.getBattlerIndex(),
-          Utils.toDmgValue(pokemon.getMaxHp() / 16),
+          toDmgValue(pokemon.getMaxHp() / 16),
           i18next.t("battlerTags:ingrainLapse", { pokemonNameWithAffix: getPokemonNameWithAffix(pokemon) }),
           true
         )
@@ -1067,7 +1087,7 @@ export class AquaRingTag extends BattlerTag {
         new PokemonHealPhase(
           pokemon.scene,
           pokemon.getBattlerIndex(),
-          Utils.toDmgValue(pokemon.getMaxHp() / 16),
+          toDmgValue(pokemon.getMaxHp() / 16),
           i18next.t("battlerTags:aquaRingLapse", {
             moveName: this.getMoveName(),
             pokemonName: getPokemonNameWithAffix(pokemon)
@@ -1161,11 +1181,11 @@ export abstract class DamagingTrapTag extends TrappedTag {
       );
       pokemon.scene.unshiftPhase(new CommonAnimPhase(pokemon.scene, pokemon.getBattlerIndex(), undefined, this.commonAnim));
 
-      const cancelled = new Utils.BooleanHolder(false);
+      const cancelled = new BooleanHolder(false);
       applyAbAttrs(BlockNonDirectDamageAbAttr, pokemon, cancelled);
 
       if (!cancelled.value) {
-        pokemon.damageAndUpdate(Utils.toDmgValue(pokemon.getMaxHp() / 8));
+        pokemon.damageAndUpdate(toDmgValue(pokemon.getMaxHp() / 8));
       }
     }
 
@@ -1356,7 +1376,7 @@ export class ContactDamageProtectedTag extends ProtectedTag {
       if (effectPhase instanceof MoveEffectPhase && effectPhase.move.getMove().hasFlag(MoveFlags.MAKES_CONTACT)) {
         const attacker = effectPhase.getPokemon();
         if (!attacker.hasAbilityWithAttr(BlockNonDirectDamageAbAttr)) {
-          attacker.damageAndUpdate(Utils.toDmgValue(attacker.getMaxHp() * (1 / this.damageRatio)), HitResult.OTHER);
+          attacker.damageAndUpdate(toDmgValue(attacker.getMaxHp() * (1 / this.damageRatio)), HitResult.OTHER);
         }
       }
     }
@@ -1709,7 +1729,7 @@ export class SemiInvulnerableTag extends BattlerTag {
   onRemove(pokemon: Pokemon): void {
     // Wait 2 frames before setting visible for battle animations that don't immediately show the sprite invisible
     pokemon.scene.tweens.addCounter({
-      duration: Utils.getFrameMs(2),
+      duration: getFrameMs(2),
       onComplete: () => pokemon.setVisible(true)
     });
   }
@@ -1860,12 +1880,12 @@ export class SaltCuredTag extends BattlerTag {
     if (ret) {
       pokemon.scene.unshiftPhase(new CommonAnimPhase(pokemon.scene, pokemon.getBattlerIndex(), pokemon.getBattlerIndex(), CommonAnim.SALT_CURE));
 
-      const cancelled = new Utils.BooleanHolder(false);
+      const cancelled = new BooleanHolder(false);
       applyAbAttrs(BlockNonDirectDamageAbAttr, pokemon, cancelled);
 
       if (!cancelled.value) {
         const pokemonSteelOrWater = pokemon.isOfType(Type.STEEL) || pokemon.isOfType(Type.WATER);
-        pokemon.damageAndUpdate(Utils.toDmgValue(pokemonSteelOrWater ? pokemon.getMaxHp() / 4 : pokemon.getMaxHp() / 8));
+        pokemon.damageAndUpdate(toDmgValue(pokemonSteelOrWater ? pokemon.getMaxHp() / 4 : pokemon.getMaxHp() / 8));
 
         pokemon.scene.queueMessage(
           i18next.t("battlerTags:saltCuredLapse", {
@@ -1907,11 +1927,11 @@ export class CursedTag extends BattlerTag {
     if (ret) {
       pokemon.scene.unshiftPhase(new CommonAnimPhase(pokemon.scene, pokemon.getBattlerIndex(), pokemon.getBattlerIndex(), CommonAnim.SALT_CURE));
 
-      const cancelled = new Utils.BooleanHolder(false);
+      const cancelled = new BooleanHolder(false);
       applyAbAttrs(BlockNonDirectDamageAbAttr, pokemon, cancelled);
 
       if (!cancelled.value) {
-        pokemon.damageAndUpdate(Utils.toDmgValue(pokemon.getMaxHp() / 4));
+        pokemon.damageAndUpdate(toDmgValue(pokemon.getMaxHp() / 4));
         pokemon.scene.queueMessage(i18next.t("battlerTags:cursedLapse", { pokemonNameWithAffix: getPokemonNameWithAffix(pokemon) }));
       }
     }
@@ -2173,7 +2193,7 @@ export class GulpMissileTag extends BattlerTag {
         return true;
       }
 
-      const cancelled = new Utils.BooleanHolder(false);
+      const cancelled = new BooleanHolder(false);
       applyAbAttrs(BlockNonDirectDamageAbAttr, attacker, cancelled);
 
       if (!cancelled.value) {
@@ -2289,7 +2309,7 @@ export class HealBlockTag extends MoveRestrictionBattlerTag {
    * @returns `true` if the move cannot be used because the target is an ally
    */
   override isMoveTargetRestricted(move: Moves, user: Pokemon, target: Pokemon) {
-    const moveCategory = new Utils.IntegerHolder(allMoves[move].category);
+    const moveCategory = new NumberHolder(allMoves[move].category);
     applyMoveAttrs(StatusCategoryOnAllyAttr, user, target, allMoves[move], moveCategory);
     if (allMoves[move].hasAttr(HealOnAllyAttr) && moveCategory.value === MoveCategory.STATUS ) {
       return true;
@@ -2506,7 +2526,7 @@ export class MysteryEncounterPostSummonTag extends BattlerTag {
     const ret = super.lapse(pokemon, lapseType);
 
     if (lapseType === BattlerTagLapseType.CUSTOM) {
-      const cancelled = new Utils.BooleanHolder(false);
+      const cancelled = new BooleanHolder(false);
       applyAbAttrs(ProtectStatAbAttr, pokemon, cancelled);
       if (!cancelled.value) {
         if (pokemon.mysteryEncounterBattleEffects) {
@@ -2955,3 +2975,22 @@ export function loadBattlerTag(source: BattlerTag | any): BattlerTag {
   tag.loadTag(source);
   return tag;
 }
+
+/**
+ * Helper function to verify that the current phase is a MoveEffectPhase and provide quick access to commonly used fields
+ *
+ * @param pokemon {@linkcode Pokemon} The Pokémon used to access the current phase
+ * @returns null if current phase is not MoveEffectPhase, otherwise Object containing the {@linkcode MoveEffectPhase}, and its
+ * corresponding {@linkcode Move} and user {@linkcode Pokemon}
+ */
+function getMoveEffectPhaseData(pokemon: Pokemon): {phase: MoveEffectPhase, attacker: Pokemon, move: Move} | null {
+  const phase = pokemon.scene.getCurrentPhase();
+  if (phase instanceof MoveEffectPhase) {
+    return {
+      phase     : phase,
+      attacker  : phase.getPokemon(),
+      move      : phase.move.getMove()
+    };
+  }
+  return null;
+}

src/data/custom-pokemon-data.ts

@@ -1,18 +1,20 @@
 import { Abilities } from "#enums/abilities";
 import { Type } from "#app/data/type";
 import { isNullOrUndefined } from "#app/utils";
+import { Nature } from "#enums/nature";
 
 /**
  * Data that can customize a Pokemon in non-standard ways from its Species
- * Currently only used by Mystery Encounters, may need to be renamed if it becomes more widely used
+ * Currently only used by Mystery Encounters and Mints.
  */
-export class MysteryEncounterPokemonData {
+export class CustomPokemonData {
   public spriteScale: number;
   public ability: Abilities | -1;
   public passive: Abilities | -1;
+  public nature: Nature | -1;
   public types: Type[];
 
-  constructor(data?: MysteryEncounterPokemonData | Partial<MysteryEncounterPokemonData>) {
+  constructor(data?: CustomPokemonData | Partial<CustomPokemonData>) {
     if (!isNullOrUndefined(data)) {
       Object.assign(this, data);
     }
@@ -20,6 +22,7 @@ export class MysteryEncounterPokemonData {
     this.spriteScale = this.spriteScale ?? -1;
     this.ability = this.ability ?? -1;
     this.passive = this.passive ?? -1;
+    this.nature = this.nature ?? -1;
     this.types = this.types ?? [];
   }
 }

src/data/move.ts

@@ -8,7 +8,7 @@ import { Constructor, NumberHolder } from "#app/utils";
 import * as Utils from "../utils";
 import { WeatherType } from "./weather";
 import { ArenaTagSide, ArenaTrapTag, WeakenMoveTypeTag } from "./arena-tag";
-import { allAbilities, AllyMoveCategoryPowerBoostAbAttr, applyAbAttrs, applyPostAttackAbAttrs, applyPreAttackAbAttrs, applyPreDefendAbAttrs, BlockItemTheftAbAttr, BlockNonDirectDamageAbAttr, BlockOneHitKOAbAttr, BlockRecoilDamageAttr, ConfusionOnStatusEffectAbAttr, FieldMoveTypePowerBoostAbAttr, FieldPreventExplosiveMovesAbAttr, ForceSwitchOutImmunityAbAttr, HealFromBerryUseAbAttr, IgnoreContactAbAttr, IgnoreMoveEffectsAbAttr, IgnoreProtectOnContactAbAttr, MaxMultiHitAbAttr, MoveAbilityBypassAbAttr, MoveEffectChanceMultiplierAbAttr, MoveTypeChangeAbAttr, ReverseDrainAbAttr, UncopiableAbilityAbAttr, UnsuppressableAbilityAbAttr, UnswappableAbilityAbAttr, UserFieldMoveTypePowerBoostAbAttr, VariableMovePowerAbAttr, WonderSkinAbAttr } from "./ability";
+import { allAbilities, AllyMoveCategoryPowerBoostAbAttr, applyAbAttrs, applyPostAttackAbAttrs, applyPreAttackAbAttrs, applyPreDefendAbAttrs, BlockItemTheftAbAttr, BlockNonDirectDamageAbAttr, BlockOneHitKOAbAttr, BlockRecoilDamageAttr, ConfusionOnStatusEffectAbAttr, FieldMoveTypePowerBoostAbAttr, FieldPreventExplosiveMovesAbAttr, ForceSwitchOutImmunityAbAttr, HealFromBerryUseAbAttr, IgnoreContactAbAttr, IgnoreMoveEffectsAbAttr, IgnoreProtectOnContactAbAttr, InfiltratorAbAttr, MaxMultiHitAbAttr, MoveAbilityBypassAbAttr, MoveEffectChanceMultiplierAbAttr, MoveTypeChangeAbAttr, ReverseDrainAbAttr, UncopiableAbilityAbAttr, UnsuppressableAbilityAbAttr, UnswappableAbilityAbAttr, UserFieldMoveTypePowerBoostAbAttr, VariableMovePowerAbAttr, WonderSkinAbAttr } from "./ability";
 import { AttackTypeBoosterModifier, BerryModifier, PokemonHeldItemModifier, PokemonMoveAccuracyBoosterModifier, PokemonMultiHitModifier, PreserveBerryModifier } from "../modifier/modifier";
 import { BattlerIndex, BattleType } from "../battle";
 import { TerrainType } from "./terrain";
@@ -346,7 +346,11 @@ export default class Move implements Localizable {
       return false;
     }
 
-    return !user.hasAbility(Abilities.INFILTRATOR)
+    const bypassed = new Utils.BooleanHolder(false);
+    // TODO: Allow this to be simulated
+    applyAbAttrs(InfiltratorAbAttr, user, null, false, bypassed);
+
+    return !bypassed.value
         && !this.hasFlag(MoveFlags.SOUND_BASED)
         && !this.hasFlag(MoveFlags.IGNORE_SUBSTITUTE);
   }
@@ -2074,7 +2078,7 @@ export class StatusEffectAttr extends MoveEffectAttr {
         }
       }
 
-      if (user !== target && target.scene.arena.getTagOnSide(ArenaTagType.SAFEGUARD, target.isPlayer() ? ArenaTagSide.PLAYER : ArenaTagSide.ENEMY)) {
+      if (user !== target && target.isSafeguarded(user)) {
         if (move.category === MoveCategory.STATUS) {
           user.scene.queueMessage(i18next.t("moveTriggers:safeguard", { targetName: getPokemonNameWithAffix(target) }));
         }
@@ -5161,7 +5165,7 @@ export class ConfuseAttr extends AddBattlerTagAttr {
   }
 
   apply(user: Pokemon, target: Pokemon, move: Move, args: any[]): boolean {
-    if (!this.selfTarget && target.scene.arena.getTagOnSide(ArenaTagType.SAFEGUARD, target.isPlayer() ? ArenaTagSide.PLAYER : ArenaTagSide.ENEMY)) {
+    if (!this.selfTarget && target.isSafeguarded(user)) {
       if (move.category === MoveCategory.STATUS) {
         user.scene.queueMessage(i18next.t("moveTriggers:safeguard", { targetName: getPokemonNameWithAffix(target) }));
       }
@@ -7600,6 +7604,7 @@ export function initMoves() {
       .ignoresVirtual(),
     new StatusMove(Moves.TRANSFORM, Type.NORMAL, -1, 10, -1, 0, 1)
       .attr(TransformAttr)
+      .condition((user, target, move) => !target.getTag(BattlerTagType.SUBSTITUTE))
       .ignoresProtect(),
     new AttackMove(Moves.BUBBLE, Type.WATER, MoveCategory.SPECIAL, 40, 100, 30, 10, 0, 1)
       .attr(StatStageChangeAttr, [ Stat.SPD ], -1)
@@ -8030,7 +8035,7 @@ export function initMoves() {
       .attr(RemoveScreensAttr),
     new StatusMove(Moves.YAWN, Type.NORMAL, -1, 10, -1, 0, 3)
       .attr(AddBattlerTagAttr, BattlerTagType.DROWSY, false, true)
-      .condition((user, target, move) => !target.status && !target.scene.arena.getTagOnSide(ArenaTagType.SAFEGUARD, target.isPlayer() ? ArenaTagSide.PLAYER : ArenaTagSide.ENEMY)),
+      .condition((user, target, move) => !target.status && !target.isSafeguarded(user)),
     new AttackMove(Moves.KNOCK_OFF, Type.DARK, MoveCategory.PHYSICAL, 65, 100, 20, -1, 0, 3)
       .attr(MovePowerMultiplierAttr, (user, target, move) => target.getHeldItems().filter(i => i.isTransferable).length > 0 ? 1.5 : 1)
       .attr(RemoveHeldItemAttr, false),

src/data/mystery-encounters/encounters/an-offer-you-cant-refuse-encounter.ts

@@ -133,8 +133,8 @@ export const AnOfferYouCantRefuseEncounter: MysteryEncounter =
       MysteryEncounterOptionBuilder
         .newOptionWithMode(MysteryEncounterOptionMode.DISABLED_OR_SPECIAL)
         .withPrimaryPokemonRequirement(new CombinationPokemonRequirement(
-          new MoveRequirement(EXTORTION_MOVES),
+          new MoveRequirement(EXTORTION_MOVES, true),
-          new AbilityRequirement(EXTORTION_ABILITIES))
+          new AbilityRequirement(EXTORTION_ABILITIES, true))
         )
         .withDialogue({
           buttonLabel: `${namespace}:option.2.label`,

src/data/mystery-encounters/encounters/bug-type-superfan-encounter.ts

@@ -42,6 +42,8 @@ import {
   AttackTypeBoosterModifier,
   BypassSpeedChanceModifier,
   ContactHeldItemTransferChanceModifier,
+  GigantamaxAccessModifier,
+  MegaEvolutionAccessModifier,
   PokemonHeldItemModifier
 } from "#app/modifier/modifier";
 import i18next from "i18next";
@@ -356,10 +358,17 @@ export const BugTypeSuperfanEncounter: MysteryEncounter =
             },
           ];
         } else {
-          // If player has any evolution/form change items that are valid for their party, will spawn one of those items in addition to a Master Ball
+          // If the player has any evolution/form change items that are valid for their party,
-          const modifierOptions: ModifierTypeOption[] = [ generateModifierTypeOption(scene, modifierTypes.MASTER_BALL)!, generateModifierTypeOption(scene, modifierTypes.MAX_LURE)! ];
+          // spawn one of those items in addition to Dynamax Band, Mega Band, and Master Ball
+          const modifierOptions: ModifierTypeOption[] = [ generateModifierTypeOption(scene, modifierTypes.MASTER_BALL)! ];
           const specialOptions: ModifierTypeOption[] = [];
 
+          if (!scene.findModifier(m => m instanceof MegaEvolutionAccessModifier)) {
+            modifierOptions.push(generateModifierTypeOption(scene, modifierTypes.MEGA_BRACELET)!);
+          }
+          if (!scene.findModifier(m => m instanceof GigantamaxAccessModifier)) {
+            modifierOptions.push(generateModifierTypeOption(scene, modifierTypes.DYNAMAX_BAND)!);
+          }
           const nonRareEvolutionModifier = generateModifierTypeOption(scene, modifierTypes.EVOLUTION_ITEM);
           if (nonRareEvolutionModifier) {
             specialOptions.push(nonRareEvolutionModifier);

src/data/mystery-encounters/encounters/clowning-around-encounter.ts

@@ -28,7 +28,7 @@ import { BattlerIndex } from "#app/battle";
 import { Moves } from "#enums/moves";
 import { EncounterBattleAnim } from "#app/data/battle-anims";
 import { MoveCategory } from "#app/data/move";
-import { MysteryEncounterPokemonData } from "#app/data/mystery-encounters/mystery-encounter-pokemon-data";
+import { CustomPokemonData } from "#app/data/custom-pokemon-data";
 import { CLASSIC_MODE_MYSTERY_ENCOUNTER_WAVES } from "#app/game-mode";
 import { EncounterAnim } from "#enums/encounter-anims";
 import { Challenges } from "#enums/challenges";
@@ -133,7 +133,7 @@ export const ClowningAroundEncounter: MysteryEncounter =
           },
           { // Blacephalon has the random ability from pool, and 2 entirely random types to fit with the theme of the encounter
             species: getPokemonSpecies(Species.BLACEPHALON),
-            mysteryEncounterPokemonData: new MysteryEncounterPokemonData({ ability: ability, types: [ randSeedInt(18), randSeedInt(18) ]}),
+            customPokemonData: new CustomPokemonData({ ability: ability, types: [ randSeedInt(18), randSeedInt(18) ]}),
             isBoss: true,
             moveSet: [ Moves.TRICK, Moves.HYPNOSIS, Moves.SHADOW_BALL, Moves.MIND_BLOWN ]
           },
@@ -353,15 +353,15 @@ export const ClowningAroundEncounter: MysteryEncounter =
             newTypes.push(secondType);
 
             // Apply the type changes (to both base and fusion, if pokemon is fused)
-            if (!pokemon.mysteryEncounterPokemonData) {
+            if (!pokemon.customPokemonData) {
-              pokemon.mysteryEncounterPokemonData = new MysteryEncounterPokemonData();
+              pokemon.customPokemonData = new CustomPokemonData();
             }
-            pokemon.mysteryEncounterPokemonData.types = newTypes;
+            pokemon.customPokemonData.types = newTypes;
             if (pokemon.isFusion()) {
-              if (!pokemon.fusionMysteryEncounterPokemonData) {
+              if (!pokemon.fusionCustomPokemonData) {
-                pokemon.fusionMysteryEncounterPokemonData = new MysteryEncounterPokemonData();
+                pokemon.fusionCustomPokemonData = new CustomPokemonData();
               }
-              pokemon.fusionMysteryEncounterPokemonData.types = newTypes;
+              pokemon.fusionCustomPokemonData.types = newTypes;
             }
           }
         })
@@ -426,15 +426,15 @@ function onYesAbilitySwap(scene: BattleScene, resolve) {
     // Do ability swap
     const encounter = scene.currentBattle.mysteryEncounter!;
     if (pokemon.isFusion()) {
-      if (!pokemon.fusionMysteryEncounterPokemonData) {
+      if (!pokemon.fusionCustomPokemonData) {
-        pokemon.fusionMysteryEncounterPokemonData = new MysteryEncounterPokemonData();
+        pokemon.fusionCustomPokemonData = new CustomPokemonData();
       }
-      pokemon.fusionMysteryEncounterPokemonData.ability = encounter.misc.ability;
+      pokemon.fusionCustomPokemonData.ability = encounter.misc.ability;
     } else {
-      if (!pokemon.mysteryEncounterPokemonData) {
+      if (!pokemon.customPokemonData) {
-        pokemon.mysteryEncounterPokemonData = new MysteryEncounterPokemonData();
+        pokemon.customPokemonData = new CustomPokemonData();
       }
-      pokemon.mysteryEncounterPokemonData.ability = encounter.misc.ability;
+      pokemon.customPokemonData.ability = encounter.misc.ability;
     }
     encounter.setDialogueToken("chosenPokemon", pokemon.getNameToRender());
     scene.ui.setMode(Mode.MESSAGE).then(() => resolve(true));

src/data/mystery-encounters/encounters/dancing-lessons-encounter.ts

@@ -236,7 +236,7 @@ export const DancingLessonsEncounter: MysteryEncounter =
     .withOption(
       MysteryEncounterOptionBuilder
         .newOptionWithMode(MysteryEncounterOptionMode.DISABLED_OR_SPECIAL)
-        .withPrimaryPokemonRequirement(new MoveRequirement(DANCING_MOVES)) // Will set option3PrimaryName and option3PrimaryMove dialogue tokens automatically
+        .withPrimaryPokemonRequirement(new MoveRequirement(DANCING_MOVES, true)) // Will set option3PrimaryName and option3PrimaryMove dialogue tokens automatically
         .withDialogue({
           buttonLabel: `${namespace}:option.3.label`,
           buttonTooltip: `${namespace}:option.3.tooltip`,

src/data/mystery-encounters/encounters/fight-or-flight-encounter.ts

@@ -145,7 +145,7 @@ export const FightOrFlightEncounter: MysteryEncounter =
     .withOption(
       MysteryEncounterOptionBuilder
         .newOptionWithMode(MysteryEncounterOptionMode.DISABLED_OR_SPECIAL)
-        .withPrimaryPokemonRequirement(new MoveRequirement(STEALING_MOVES)) // Will set option2PrimaryName and option2PrimaryMove dialogue tokens automatically
+        .withPrimaryPokemonRequirement(new MoveRequirement(STEALING_MOVES, true)) // Will set option2PrimaryName and option2PrimaryMove dialogue tokens automatically
         .withDialogue({
           buttonLabel: `${namespace}:option.2.label`,
           buttonTooltip: `${namespace}:option.2.tooltip`,

src/data/mystery-encounters/encounters/part-timer-encounter.ts

@@ -227,7 +227,7 @@ export const PartTimerEncounter: MysteryEncounter =
     .withOption(
       MysteryEncounterOptionBuilder
         .newOptionWithMode(MysteryEncounterOptionMode.DISABLED_OR_SPECIAL)
-        .withPrimaryPokemonRequirement(new MoveRequirement(CHARMING_MOVES)) // Will set option3PrimaryName and option3PrimaryMove dialogue tokens automatically
+        .withPrimaryPokemonRequirement(new MoveRequirement(CHARMING_MOVES, true)) // Will set option3PrimaryName and option3PrimaryMove dialogue tokens automatically
         .withDialogue({
           buttonLabel: `${namespace}:option.3.label`,
           buttonTooltip: `${namespace}:option.3.tooltip`,

src/data/mystery-encounters/encounters/shady-vitamin-dealer-encounter.ts

@@ -138,7 +138,7 @@ export const ShadyVitaminDealerEncounter: MysteryEncounter =
             newNature = randSeedInt(25) as Nature;
           }
 
-          chosenPokemon.nature = newNature;
+          chosenPokemon.customPokemonData.nature = newNature;
           encounter.setDialogueToken("newNature", getNatureName(newNature));
           queueEncounterMessage(scene, `${namespace}:cheap_side_effects`);
           setEncounterExp(scene, [ chosenPokemon.id ], 100);

src/data/mystery-encounters/encounters/slumbering-snorlax-encounter.ts

@@ -18,7 +18,7 @@ import { MysteryEncounterOptionMode } from "#enums/mystery-encounter-option-mode
 import { PartyHealPhase } from "#app/phases/party-heal-phase";
 import { CLASSIC_MODE_MYSTERY_ENCOUNTER_WAVES } from "#app/game-mode";
 import { BerryType } from "#enums/berry-type";
-import { MysteryEncounterPokemonData } from "#app/data/mystery-encounters/mystery-encounter-pokemon-data";
+import { CustomPokemonData } from "#app/data/custom-pokemon-data";
 
 /** i18n namespace for the encounter */
 const namespace = "mysteryEncounters/slumberingSnorlax";
@@ -72,7 +72,7 @@ export const SlumberingSnorlaxEncounter: MysteryEncounter =
             stackCount: 2
           },
         ],
-        mysteryEncounterPokemonData: new MysteryEncounterPokemonData({ spriteScale: 1.25 }),
+        customPokemonData: new CustomPokemonData({ spriteScale: 1.25 }),
         aiType: AiType.SMART // Required to ensure Snorlax uses Sleep Talk while it is asleep
       };
       const config: EnemyPartyConfig = {
@@ -143,7 +143,7 @@ export const SlumberingSnorlaxEncounter: MysteryEncounter =
     .withOption(
       MysteryEncounterOptionBuilder
         .newOptionWithMode(MysteryEncounterOptionMode.DISABLED_OR_SPECIAL)
-        .withPrimaryPokemonRequirement(new MoveRequirement(STEALING_MOVES))
+        .withPrimaryPokemonRequirement(new MoveRequirement(STEALING_MOVES, true))
         .withDialogue({
           buttonLabel: `${namespace}:option.3.label`,
           buttonTooltip: `${namespace}:option.3.tooltip`,

src/data/mystery-encounters/encounters/the-expert-pokemon-breeder-encounter.ts

@@ -25,6 +25,7 @@ import { achvs } from "#app/system/achv";
 import { modifierTypes, PokemonHeldItemModifierType } from "#app/modifier/modifier-type";
 import { Type } from "#app/data/type";
 import { getPokeballTintColor } from "#app/data/pokeball";
+import { PokemonHeldItemModifier } from "#app/modifier/modifier";
 
 /** the i18n namespace for the encounter */
 const namespace = "mysteryEncounters/theExpertPokemonBreeder";
@@ -163,7 +164,7 @@ export const TheExpertPokemonBreederEncounter: MysteryEncounter =
       if (pokemon2CommonEggs > 0) {
         const eggsText = i18next.t(`${namespace}:numEggs`, { count: pokemon2CommonEggs, rarity: i18next.t("egg:defaultTier") });
         pokemon2Tooltip += i18next.t(`${namespace}:eggs_tooltip`, { eggs: eggsText });
-        encounter.setDialogueToken("pokemon1CommonEggs", eggsText);
+        encounter.setDialogueToken("pokemon2CommonEggs", eggsText);
       }
       encounter.options[1].dialogue!.buttonTooltip = pokemon2Tooltip;
 
@@ -221,7 +222,7 @@ export const TheExpertPokemonBreederEncounter: MysteryEncounter =
           encounter.misc.chosenPokemon = pokemon1;
           encounter.setDialogueToken("chosenPokemon", pokemon1.getNameToRender());
           const eggOptions = getEggOptions(scene, pokemon1CommonEggs, pokemon1RareEggs);
-          setEncounterRewards(scene, { fillRemaining: true }, eggOptions);
+          setEncounterRewards(scene, { fillRemaining: true }, eggOptions, () => doPostEncounterCleanup(scene));
 
           // Remove all Pokemon from the party except the chosen Pokemon
           removePokemonFromPartyAndStoreHeldItems(scene, encounter, pokemon1);
@@ -247,9 +248,6 @@ export const TheExpertPokemonBreederEncounter: MysteryEncounter =
           encounter.onGameOver = onGameOver;
           await initBattleWithEnemyConfig(scene, config);
         })
-        .withPostOptionPhase(async (scene: BattleScene) => {
-          await doPostEncounterCleanup(scene);
-        })
         .build()
     )
     .withOption(
@@ -273,7 +271,7 @@ export const TheExpertPokemonBreederEncounter: MysteryEncounter =
           encounter.misc.chosenPokemon = pokemon2;
           encounter.setDialogueToken("chosenPokemon", pokemon2.getNameToRender());
           const eggOptions = getEggOptions(scene, pokemon2CommonEggs, pokemon2RareEggs);
-          setEncounterRewards(scene, { fillRemaining: true }, eggOptions);
+          setEncounterRewards(scene, { fillRemaining: true }, eggOptions, () => doPostEncounterCleanup(scene));
 
           // Remove all Pokemon from the party except the chosen Pokemon
           removePokemonFromPartyAndStoreHeldItems(scene, encounter, pokemon2);
@@ -299,9 +297,6 @@ export const TheExpertPokemonBreederEncounter: MysteryEncounter =
           encounter.onGameOver = onGameOver;
           await initBattleWithEnemyConfig(scene, config);
         })
-        .withPostOptionPhase(async (scene: BattleScene) => {
-          await doPostEncounterCleanup(scene);
-        })
         .build()
     )
     .withOption(
@@ -325,7 +320,7 @@ export const TheExpertPokemonBreederEncounter: MysteryEncounter =
           encounter.misc.chosenPokemon = pokemon3;
           encounter.setDialogueToken("chosenPokemon", pokemon3.getNameToRender());
           const eggOptions = getEggOptions(scene, pokemon3CommonEggs, pokemon3RareEggs);
-          setEncounterRewards(scene, { fillRemaining: true }, eggOptions);
+          setEncounterRewards(scene, { fillRemaining: true }, eggOptions, () => doPostEncounterCleanup(scene));
 
           // Remove all Pokemon from the party except the chosen Pokemon
           removePokemonFromPartyAndStoreHeldItems(scene, encounter, pokemon3);
@@ -351,9 +346,6 @@ export const TheExpertPokemonBreederEncounter: MysteryEncounter =
           encounter.onGameOver = onGameOver;
           await initBattleWithEnemyConfig(scene, config);
         })
-        .withPostOptionPhase(async (scene: BattleScene) => {
-          await doPostEncounterCleanup(scene);
-        })
         .build()
     )
     .withOutroDialogue([
@@ -521,19 +513,19 @@ function checkAchievement(scene: BattleScene) {
   }
 }
 
-async function restorePartyAndHeldItems(scene: BattleScene) {
+function restorePartyAndHeldItems(scene: BattleScene) {
   const encounter = scene.currentBattle.mysteryEncounter!;
   // Restore original party
   scene.getParty().push(...encounter.misc.originalParty);
 
   // Restore held items
   const originalHeldItems = encounter.misc.originalPartyHeldItems;
-  originalHeldItems.forEach(pokemonHeldItemsList => {
+  originalHeldItems.forEach((pokemonHeldItemsList: PokemonHeldItemModifier[]) => {
     pokemonHeldItemsList.forEach(heldItem => {
       scene.addModifier(heldItem, true, false, false, true);
     });
   });
-  await scene.updateModifiers(true);
+  scene.updateModifiers(true);
 }
 
 function onGameOver(scene: BattleScene) {
@@ -609,13 +601,13 @@ function onGameOver(scene: BattleScene) {
   return false;
 }
 
-async function doPostEncounterCleanup(scene: BattleScene) {
+function doPostEncounterCleanup(scene: BattleScene) {
   const encounter = scene.currentBattle.mysteryEncounter!;
   if (!encounter.misc.encounterFailed) {
     // Give achievement if in Space biome
     checkAchievement(scene);
     // Give 20 friendship to the chosen pokemon
     encounter.misc.chosenPokemon.addFriendship(FRIENDSHIP_ADDED);
-    await restorePartyAndHeldItems(scene);
+    restorePartyAndHeldItems(scene);
   }
 }

src/data/mystery-encounters/encounters/the-strong-stuff-encounter.ts

@@ -14,7 +14,7 @@ import { BattlerIndex } from "#app/battle";
 import { BattlerTagType } from "#enums/battler-tag-type";
 import { BerryType } from "#enums/berry-type";
 import { MysteryEncounterTier } from "#enums/mystery-encounter-tier";
-import { MysteryEncounterPokemonData } from "#app/data/mystery-encounters/mystery-encounter-pokemon-data";
+import { CustomPokemonData } from "#app/data/custom-pokemon-data";
 import { Stat } from "#enums/stat";
 import { StatStageChangePhase } from "#app/phases/stat-stage-change-phase";
 import { CLASSIC_MODE_MYSTERY_ENCOUNTER_WAVES } from "#app/game-mode";
@@ -79,7 +79,7 @@ export const TheStrongStuffEncounter: MysteryEncounter =
             species: getPokemonSpecies(Species.SHUCKLE),
             isBoss: true,
             bossSegments: 5,
-            mysteryEncounterPokemonData: new MysteryEncounterPokemonData({ spriteScale: 1.25 }),
+            customPokemonData: new CustomPokemonData({ spriteScale: 1.25 }),
             nature: Nature.BOLD,
             moveSet: [ Moves.INFESTATION, Moves.SALT_CURE, Moves.GASTRO_ACID, Moves.HEAL_ORDER ],
             modifierConfigs: [

src/data/mystery-encounters/encounters/uncommon-breed-encounter.ts

@@ -210,7 +210,7 @@ export const UncommonBreedEncounter: MysteryEncounter =
     .withOption(
       MysteryEncounterOptionBuilder
         .newOptionWithMode(MysteryEncounterOptionMode.DISABLED_OR_SPECIAL)
-        .withPrimaryPokemonRequirement(new MoveRequirement(CHARMING_MOVES)) // Will set option2PrimaryName and option2PrimaryMove dialogue tokens automatically
+        .withPrimaryPokemonRequirement(new MoveRequirement(CHARMING_MOVES, true)) // Will set option2PrimaryName and option2PrimaryMove dialogue tokens automatically
         .withDialogue({
           buttonLabel: `${namespace}:option.3.label`,
           buttonTooltip: `${namespace}:option.3.tooltip`,

src/data/mystery-encounters/encounters/weird-dream-encounter.ts

@@ -12,7 +12,7 @@ import { IntegerHolder, isNullOrUndefined, randSeedInt, randSeedShuffle } from "
 import PokemonSpecies, { allSpecies, getPokemonSpecies } from "#app/data/pokemon-species";
 import { HiddenAbilityRateBoosterModifier, PokemonFormChangeItemModifier, PokemonHeldItemModifier } from "#app/modifier/modifier";
 import { achvs } from "#app/system/achv";
-import { MysteryEncounterPokemonData } from "#app/data/mystery-encounters/mystery-encounter-pokemon-data";
+import { CustomPokemonData } from "#app/data/custom-pokemon-data";
 import { showEncounterText } from "#app/data/mystery-encounters/utils/encounter-dialogue-utils";
 import { modifierTypes } from "#app/modifier/modifier-type";
 import i18next from "#app/plugins/i18n";
@@ -379,10 +379,10 @@ async function doNewTeamPostProcess(scene: BattleScene, transformations: Pokemon
       newType = randSeedInt(18) as Type;
     }
     newTypes.push(newType);
-    if (!newPokemon.mysteryEncounterPokemonData) {
+    if (!newPokemon.customPokemonData) {
-      newPokemon.mysteryEncounterPokemonData = new MysteryEncounterPokemonData();
+      newPokemon.customPokemonData = new CustomPokemonData();
     }
-    newPokemon.mysteryEncounterPokemonData.types = newTypes;
+    newPokemon.customPokemonData.types = newTypes;
 
     for (const item of transformation.heldItems) {
       item.pokemonId = newPokemon.id;

src/data/mystery-encounters/mystery-encounter-requirements.ts

@@ -15,6 +15,7 @@ import { MysteryEncounterType } from "#enums/mystery-encounter-type";
 import { AttackTypeBoosterModifier } from "#app/modifier/modifier";
 import { AttackTypeBoosterModifierType } from "#app/modifier/modifier-type";
 import { SpeciesFormKey } from "#enums/species-form-key";
+import { allAbilities } from "#app/data/ability";
 
 export interface EncounterRequirement {
   meetsRequirement(scene: BattleScene): boolean; // Boolean to see if a requirement is met
@@ -476,9 +477,11 @@ export class MoveRequirement extends EncounterPokemonRequirement {
   requiredMoves: Moves[] = [];
   minNumberOfPokemon: number;
   invertQuery: boolean;
+  excludeDisallowedPokemon: boolean;
 
-  constructor(moves: Moves | Moves[], minNumberOfPokemon: number = 1, invertQuery: boolean = false) {
+  constructor(moves: Moves | Moves[], excludeDisallowedPokemon: boolean, minNumberOfPokemon: number = 1, invertQuery: boolean = false) {
     super();
+    this.excludeDisallowedPokemon = excludeDisallowedPokemon;
     this.minNumberOfPokemon = minNumberOfPokemon;
     this.invertQuery = invertQuery;
     this.requiredMoves = Array.isArray(moves) ? moves : [ moves ];
@@ -494,10 +497,15 @@ export class MoveRequirement extends EncounterPokemonRequirement {
 
   override queryParty(partyPokemon: PlayerPokemon[]): PlayerPokemon[] {
     if (!this.invertQuery) {
-      return partyPokemon.filter((pokemon) => this.requiredMoves.filter((reqMove) => pokemon.moveset.filter((move) => move?.moveId === reqMove).length > 0).length > 0);
+      // get the Pokemon with at least one move in the required moves list
+      return partyPokemon.filter((pokemon) =>
+        (!this.excludeDisallowedPokemon || pokemon.isAllowedInBattle())
+        && pokemon.moveset.some((move) => move?.moveId && this.requiredMoves.includes(move.moveId)));
     } else {
       // for an inverted query, we only want to get the pokemon that don't have ANY of the listed moves
-      return partyPokemon.filter((pokemon) => this.requiredMoves.filter((reqMove) => pokemon.moveset.filter((move) => move?.moveId === reqMove).length === 0).length === 0);
+      return partyPokemon.filter((pokemon) =>
+        (!this.excludeDisallowedPokemon || pokemon.isAllowedInBattle())
+        && !pokemon.moveset.some((move) => move?.moveId && this.requiredMoves.includes(move.moveId)));
     }
   }
 
@@ -559,9 +567,11 @@ export class AbilityRequirement extends EncounterPokemonRequirement {
   requiredAbilities: Abilities[];
   minNumberOfPokemon: number;
   invertQuery: boolean;
+  excludeDisallowedPokemon: boolean;
 
-  constructor(abilities: Abilities | Abilities[], minNumberOfPokemon: number = 1, invertQuery: boolean = false) {
+  constructor(abilities: Abilities | Abilities[], excludeDisallowedPokemon: boolean, minNumberOfPokemon: number = 1, invertQuery: boolean = false) {
     super();
+    this.excludeDisallowedPokemon = excludeDisallowedPokemon;
     this.minNumberOfPokemon = minNumberOfPokemon;
     this.invertQuery = invertQuery;
     this.requiredAbilities = Array.isArray(abilities) ? abilities : [ abilities ];
@@ -577,16 +587,21 @@ export class AbilityRequirement extends EncounterPokemonRequirement {
 
   override queryParty(partyPokemon: PlayerPokemon[]): PlayerPokemon[] {
     if (!this.invertQuery) {
-      return partyPokemon.filter((pokemon) => this.requiredAbilities.some((ability) => pokemon.getAbility().id === ability));
+      return partyPokemon.filter((pokemon) =>
+        (!this.excludeDisallowedPokemon || pokemon.isAllowedInBattle())
+        && this.requiredAbilities.some((ability) => pokemon.hasAbility(ability, false)));
     } else {
-      // for an inverted query, we only want to get the pokemon that don't have ANY of the listed abilitiess
+      // for an inverted query, we only want to get the pokemon that don't have ANY of the listed abilities
-      return partyPokemon.filter((pokemon) => this.requiredAbilities.filter((ability) => pokemon.getAbility().id === ability).length === 0);
+      return partyPokemon.filter((pokemon) =>
+        (!this.excludeDisallowedPokemon || pokemon.isAllowedInBattle())
+        && this.requiredAbilities.filter((ability) => pokemon.hasAbility(ability, false)).length === 0);
     }
   }
 
-  override getDialogueToken(scene: BattleScene, pokemon?: PlayerPokemon): [string, string] {
+  override getDialogueToken(_scene: BattleScene, pokemon?: PlayerPokemon): [string, string] {
-    if (pokemon?.getAbility().id && this.requiredAbilities.some(a => pokemon.getAbility().id === a)) {
+    const matchingAbility = this.requiredAbilities.find(a => pokemon?.hasAbility(a, false));
-      return [ "ability", pokemon.getAbility().name ];
+    if (!isNullOrUndefined(matchingAbility)) {
+      return [ "ability", allAbilities[matchingAbility].name ];
     }
     return [ "ability", "" ];
   }

src/data/mystery-encounters/mystery-encounter.ts

@@ -325,7 +325,7 @@ export default class MysteryEncounter implements IMysteryEncounter {
       if (activeMon.length > 0) {
         this.primaryPokemon = activeMon[0];
       } else {
-        this.primaryPokemon = scene.getParty().filter(p => !p.isFainted())[0];
+        this.primaryPokemon = scene.getParty().filter(p => p.isAllowedInBattle())[0];
       }
       return true;
     }

src/data/mystery-encounters/utils/encounter-phase-utils.ts

@@ -27,7 +27,7 @@ import { Status, StatusEffect } from "#app/data/status-effect";
 import { TrainerConfig, trainerConfigs, TrainerSlot } from "#app/data/trainer-config";
 import PokemonSpecies from "#app/data/pokemon-species";
 import { Egg, IEggOptions } from "#app/data/egg";
-import { MysteryEncounterPokemonData } from "#app/data/mystery-encounters/mystery-encounter-pokemon-data";
+import { CustomPokemonData } from "#app/data/custom-pokemon-data";
 import HeldModifierConfig from "#app/interfaces/held-modifier-config";
 import { MovePhase } from "#app/phases/move-phase";
 import { EggLapsePhase } from "#app/phases/egg-lapse-phase";
@@ -71,7 +71,7 @@ export interface EnemyPokemonConfig {
   nickname?: string;
   bossSegments?: number;
   bossSegmentModifier?: number; // Additive to the determined segment number
-  mysteryEncounterPokemonData?: MysteryEncounterPokemonData;
+  customPokemonData?: CustomPokemonData;
   formIndex?: number;
   abilityIndex?: number;
   level?: number;
@@ -145,7 +145,7 @@ export async function initBattleWithEnemyConfig(scene: BattleScene, partyConfig:
     newTrainer.setVisible(false);
     scene.field.add(newTrainer);
     scene.currentBattle.trainer = newTrainer;
-    loadEnemyAssets.push(newTrainer.loadAssets());
+    loadEnemyAssets.push(newTrainer.loadAssets().then(() => newTrainer.initSprite()));
 
     battle.enemyLevels = scene.currentBattle.trainer.getPartyLevels(scene.currentBattle.waveIndex);
   } else {
@@ -250,8 +250,8 @@ export async function initBattleWithEnemyConfig(scene: BattleScene, partyConfig:
       }
 
       // Set custom mystery encounter data fields (such as sprite scale, custom abilities, types, etc.)
-      if (!isNullOrUndefined(config.mysteryEncounterPokemonData)) {
+      if (!isNullOrUndefined(config.customPokemonData)) {
-        enemyPokemon.mysteryEncounterPokemonData = config.mysteryEncounterPokemonData;
+        enemyPokemon.customPokemonData = config.customPokemonData;
       }
 
       // Set Boss

src/field/pokemon.ts

@@ -22,7 +22,7 @@ import { reverseCompatibleTms, tmSpecies, tmPoolTiers } from "#app/data/balance/
 import { BattlerTag, BattlerTagLapseType, EncoreTag, GroundedTag, HighestStatBoostTag, SubstituteTag, TypeImmuneTag, getBattlerTag, SemiInvulnerableTag, TypeBoostTag, MoveRestrictionBattlerTag, ExposedTag, DragonCheerTag, CritBoostTag, TrappedTag, TarShotTag, AutotomizedTag, PowerTrickTag } from "../data/battler-tags";
 import { WeatherType } from "#app/data/weather";
 import { ArenaTagSide, NoCritTag, WeakenMoveScreenTag } from "#app/data/arena-tag";
-import { Ability, AbAttr, StatMultiplierAbAttr, BlockCritAbAttr, BonusCritAbAttr, BypassBurnDamageReductionAbAttr, FieldPriorityMoveImmunityAbAttr, IgnoreOpponentStatStagesAbAttr, MoveImmunityAbAttr, PreDefendFullHpEndureAbAttr, ReceivedMoveDamageMultiplierAbAttr, ReduceStatusEffectDurationAbAttr, StabBoostAbAttr, StatusEffectImmunityAbAttr, TypeImmunityAbAttr, WeightMultiplierAbAttr, allAbilities, applyAbAttrs, applyStatMultiplierAbAttrs, applyPreApplyBattlerTagAbAttrs, applyPreAttackAbAttrs, applyPreDefendAbAttrs, applyPreSetStatusAbAttrs, UnsuppressableAbilityAbAttr, SuppressFieldAbilitiesAbAttr, NoFusionAbilityAbAttr, MultCritAbAttr, IgnoreTypeImmunityAbAttr, DamageBoostAbAttr, IgnoreTypeStatusEffectImmunityAbAttr, ConditionalCritAbAttr, applyFieldStatMultiplierAbAttrs, FieldMultiplyStatAbAttr, AddSecondStrikeAbAttr, UserFieldStatusEffectImmunityAbAttr, UserFieldBattlerTagImmunityAbAttr, BattlerTagImmunityAbAttr, MoveTypeChangeAbAttr, FullHpResistTypeAbAttr, applyCheckTrappedAbAttrs, CheckTrappedAbAttr, PostSetStatusAbAttr, applyPostSetStatusAbAttrs } from "#app/data/ability";
+import { Ability, AbAttr, StatMultiplierAbAttr, BlockCritAbAttr, BonusCritAbAttr, BypassBurnDamageReductionAbAttr, FieldPriorityMoveImmunityAbAttr, IgnoreOpponentStatStagesAbAttr, MoveImmunityAbAttr, PreDefendFullHpEndureAbAttr, ReceivedMoveDamageMultiplierAbAttr, ReduceStatusEffectDurationAbAttr, StabBoostAbAttr, StatusEffectImmunityAbAttr, TypeImmunityAbAttr, WeightMultiplierAbAttr, allAbilities, applyAbAttrs, applyStatMultiplierAbAttrs, applyPreApplyBattlerTagAbAttrs, applyPreAttackAbAttrs, applyPreDefendAbAttrs, applyPreSetStatusAbAttrs, UnsuppressableAbilityAbAttr, SuppressFieldAbilitiesAbAttr, NoFusionAbilityAbAttr, MultCritAbAttr, IgnoreTypeImmunityAbAttr, DamageBoostAbAttr, IgnoreTypeStatusEffectImmunityAbAttr, ConditionalCritAbAttr, applyFieldStatMultiplierAbAttrs, FieldMultiplyStatAbAttr, AddSecondStrikeAbAttr, UserFieldStatusEffectImmunityAbAttr, UserFieldBattlerTagImmunityAbAttr, BattlerTagImmunityAbAttr, MoveTypeChangeAbAttr, FullHpResistTypeAbAttr, applyCheckTrappedAbAttrs, CheckTrappedAbAttr, PostSetStatusAbAttr, applyPostSetStatusAbAttrs, InfiltratorAbAttr } from "#app/data/ability";
 import PokemonData from "#app/system/pokemon-data";
 import { BattlerIndex } from "#app/battle";
 import { Mode } from "#app/ui/ui";
@@ -62,7 +62,7 @@ import { ToggleDoublePositionPhase } from "#app/phases/toggle-double-position-ph
 import { Challenges } from "#enums/challenges";
 import { PokemonAnimType } from "#enums/pokemon-anim-type";
 import { PLAYER_PARTY_MAX_SIZE } from "#app/constants";
-import { MysteryEncounterPokemonData } from "#app/data/mystery-encounters/mystery-encounter-pokemon-data";
+import { CustomPokemonData } from "#app/data/custom-pokemon-data";
 import { SwitchType } from "#enums/switch-type";
 import { SpeciesFormKey } from "#enums/species-form-key";
 import { BASE_HIDDEN_ABILITY_CHANCE, BASE_SHINY_CHANCE, SHINY_EPIC_CHANCE, SHINY_VARIANT_CHANCE } from "#app/data/balance/rates";
@@ -114,7 +114,7 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
   public fusionVariant: Variant;
   public fusionGender: Gender;
   public fusionLuck: integer;
-  public fusionMysteryEncounterPokemonData: MysteryEncounterPokemonData | null;
+  public fusionCustomPokemonData: CustomPokemonData | null;
 
   private summonDataPrimer: PokemonSummonData | null;
 
@@ -122,7 +122,7 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
   public battleData: PokemonBattleData;
   public battleSummonData: PokemonBattleSummonData;
   public turnData: PokemonTurnData;
-  public mysteryEncounterPokemonData: MysteryEncounterPokemonData;
+  public customPokemonData: CustomPokemonData;
 
   /** Used by Mystery Encounters to execute pokemon-specific logic (such as stat boosts) at start of battle */
   public mysteryEncounterBattleEffects?: (pokemon: Pokemon) => void;
@@ -194,7 +194,6 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
       }
       this.nature = dataSource.nature || 0 as Nature;
       this.nickname = dataSource.nickname;
-      this.natureOverride = dataSource.natureOverride !== undefined ? dataSource.natureOverride : -1;
       this.moveset = dataSource.moveset;
       this.status = dataSource.status!; // TODO: is this bang correct?
       this.friendship = dataSource.friendship !== undefined ? dataSource.friendship : this.species.baseFriendship;
@@ -213,9 +212,9 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
       this.fusionVariant = dataSource.fusionVariant || 0;
       this.fusionGender = dataSource.fusionGender;
       this.fusionLuck = dataSource.fusionLuck;
-      this.fusionMysteryEncounterPokemonData = dataSource.fusionMysteryEncounterPokemonData;
+      this.fusionCustomPokemonData = dataSource.fusionCustomPokemonData;
       this.usedTMs = dataSource.usedTMs ?? [];
-      this.mysteryEncounterPokemonData = new MysteryEncounterPokemonData(dataSource.mysteryEncounterPokemonData);
+      this.customPokemonData = new CustomPokemonData(dataSource.customPokemonData);
     } else {
       this.id = Utils.randSeedInt(4294967296);
       this.ivs = ivs || Utils.getIvsFromId(this.id);
@@ -236,7 +235,7 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
         this.variant = this.shiny ? this.generateVariant() : 0;
       }
 
-      this.mysteryEncounterPokemonData = new MysteryEncounterPokemonData();
+      this.customPokemonData = new CustomPokemonData();
 
       if (nature !== undefined) {
         this.setNature(nature);
@@ -244,8 +243,6 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
         this.generateNature();
       }
 
-      this.natureOverride = -1;
-
       this.friendship = species.baseFriendship;
       this.metLevel = level;
       this.metBiome = scene.currentBattle ? scene.arena.biomeType : -1;
@@ -740,8 +737,8 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
     const formKey = this.getFormKey();
     if (this.isMax() === true || formKey === "segin-starmobile" || formKey === "schedar-starmobile" || formKey === "navi-starmobile" || formKey === "ruchbah-starmobile" || formKey === "caph-starmobile") {
       return 1.5;
-    } else if (this.mysteryEncounterPokemonData.spriteScale > 0) {
+    } else if (this.customPokemonData.spriteScale > 0) {
-      return this.mysteryEncounterPokemonData.spriteScale;
+      return this.customPokemonData.spriteScale;
     }
     return 1;
   }
@@ -1170,7 +1167,7 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
   }
 
   getNature(): Nature {
-    return this.natureOverride !== -1 ? this.natureOverride : this.nature;
+    return this.customPokemonData.nature !== -1 ? this.customPokemonData.nature : this.nature;
   }
 
   setNature(nature: Nature): void {
@@ -1388,20 +1385,17 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
     if (!types.length || !includeTeraType) {
 
       const doIllusion: boolean = useIllusion === "AUTO" ? !forDefend : useIllusion;
-      if (this.mysteryEncounterPokemonData.types && this.mysteryEncounterPokemonData.types.length > 0) {
+      if (!ignoreOverride && this.summonData?.types && this.summonData.types.length > 0 && (!this.battleData?.illusion.active || !doIllusion)) {
-        // "Permanent" override for a Pokemon's normal types, currently only used by Mystery Encounters
-        this.mysteryEncounterPokemonData.types.forEach(t => types.push(t));
-      } else if (!ignoreOverride && this.summonData?.types && this.summonData.types.length > 0 && (!this.battleData?.illusion.active || !doIllusion)) {
         this.summonData.types.forEach(t => types.push(t));
-      } else if (this.mysteryEncounterPokemonData.types && this.mysteryEncounterPokemonData.types.length > 0) {
+      } else if (this.customPokemonData.types && this.customPokemonData.types.length > 0) {
         // "Permanent" override for a Pokemon's normal types, currently only used by Mystery Encounters
-        types.push(this.mysteryEncounterPokemonData.types[0]);
+        types.push(this.customPokemonData.types[0]);
 
         // Fusing a Pokemon onto something with "permanently changed" types will still apply the fusion's types as normal
         const fusionSpeciesForm = this.getFusionSpeciesForm(ignoreOverride);
         if (fusionSpeciesForm) {
           // Check if the fusion Pokemon also had "permanently changed" types
-          const fusionMETypes = this.fusionMysteryEncounterPokemonData?.types;
+          const fusionMETypes = this.fusionCustomPokemonData?.types;
           if (fusionMETypes && fusionMETypes.length >= 2 && fusionMETypes[1] !== types[0]) {
             types.push(fusionMETypes[1]);
           } else if (fusionMETypes && fusionMETypes.length === 1 && fusionMETypes[0] !== types[0]) {
@@ -1413,8 +1407,8 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
           }
         }
 
-        if (types.length === 1 && this.mysteryEncounterPokemonData.types.length >= 2) {
+        if (types.length === 1 && this.customPokemonData.types.length >= 2) {
-          types.push(this.mysteryEncounterPokemonData.types[1]);
+          types.push(this.customPokemonData.types[1]);
         }
       } else {
         const speciesForm = this.getSpeciesForm(ignoreOverride, doIllusion);
@@ -1424,7 +1418,7 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
         if (fusionSpeciesForm) {
           // Check if the fusion Pokemon also had "permanently changed" types
           // Otherwise, use standard fusion type logic
-          const fusionMETypes = this.fusionMysteryEncounterPokemonData?.types;
+          const fusionMETypes = this.fusionCustomPokemonData?.types;
           if (fusionMETypes && fusionMETypes.length >= 2 && fusionMETypes[1] !== types[0]) {
             types.push(fusionMETypes[1]);
           } else if (fusionMETypes && fusionMETypes.length === 1 && fusionMETypes[0] !== types[0]) {
@@ -1454,6 +1448,12 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
         types.splice(index, 1);
       }
     }
+
+    // If both types are the same (can happen in weird custom typing scenarios), reduce to single type
+    if (types.length > 1 && types[0] === types[1]) {
+      types.splice(0, 1);
+    }
+
     return types;
   }
 
@@ -1480,14 +1480,14 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
       return allAbilities[Overrides.OPP_ABILITY_OVERRIDE];
     }
     if (this.isFusion()) {
-      if (!isNullOrUndefined(this.fusionMysteryEncounterPokemonData?.ability) && this.fusionMysteryEncounterPokemonData.ability !== -1) {
+      if (!isNullOrUndefined(this.fusionCustomPokemonData?.ability) && this.fusionCustomPokemonData.ability !== -1) {
-        return allAbilities[this.fusionMysteryEncounterPokemonData.ability];
+        return allAbilities[this.fusionCustomPokemonData.ability];
       } else {
         return allAbilities[this.getFusionSpeciesForm(ignoreOverride).getAbility(this.fusionAbilityIndex)];
       }
     }
-    if (!isNullOrUndefined(this.mysteryEncounterPokemonData.ability) && this.mysteryEncounterPokemonData.ability !== -1) {
+    if (!isNullOrUndefined(this.customPokemonData.ability) && this.customPokemonData.ability !== -1) {
-      return allAbilities[this.mysteryEncounterPokemonData.ability];
+      return allAbilities[this.customPokemonData.ability];
     }
     let abilityId = this.getSpeciesForm(ignoreOverride).getAbility(this.abilityIndex);
     if (abilityId === Abilities.NONE) {
@@ -1510,8 +1510,8 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
     if (Overrides.OPP_PASSIVE_ABILITY_OVERRIDE && !this.isPlayer()) {
       return allAbilities[Overrides.OPP_PASSIVE_ABILITY_OVERRIDE];
     }
-    if (!isNullOrUndefined(this.mysteryEncounterPokemonData.passive) && this.mysteryEncounterPokemonData.passive !== -1) {
+    if (!isNullOrUndefined(this.customPokemonData.passive) && this.customPokemonData.passive !== -1) {
-      return allAbilities[this.mysteryEncounterPokemonData.passive];
+      return allAbilities[this.customPokemonData.passive];
     }
 
     let starterSpeciesId = this.species.speciesId;
@@ -2213,7 +2213,7 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
     this.fusionVariant = 0;
     this.fusionGender = 0;
     this.fusionLuck = 0;
-    this.fusionMysteryEncounterPokemonData = null;
+    this.fusionCustomPokemonData = null;
 
     this.generateName();
     this.calculateStats();
@@ -2382,7 +2382,10 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
       this.moveset.push(new PokemonMove(movePool[index][0], 0, 0));
     }
 
-    this.scene.triggerPokemonFormChange(this, SpeciesFormChangeMoveLearnedTrigger);
+    // Trigger FormChange, except for enemy Pokemon during Mystery Encounters, to avoid crashes
+    if (this.isPlayer() || !this.scene.currentBattle?.isBattleMysteryEncounter() || !this.scene.currentBattle?.mysteryEncounter) {
+      this.scene.triggerPokemonFormChange(this, SpeciesFormChangeMoveLearnedTrigger);
+    }
   }
 
   trySelectMove(moveIndex: integer, ignorePp?: boolean): boolean {
@@ -2480,6 +2483,15 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
     this.levelExp = this.exp - getLevelTotalExp(this.level, this.species.growthRate);
   }
 
+  /**
+   * Compares if `this` and {@linkcode target} are on the same team.
+   * @param target the {@linkcode Pokemon} to compare against.
+   * @returns `true` if the two pokemon are allies, `false` otherwise
+   */
+  public isOpponent(target: Pokemon): boolean {
+    return this.isPlayer() !== target.isPlayer();
+  }
+
   getOpponent(targetIndex: integer): Pokemon | null {
     const ret = this.getOpponents()[targetIndex];
     if (ret.summonData) {
@@ -2800,7 +2812,7 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
 
     /** Reduces damage if this Pokemon has a relevant screen (e.g. Light Screen for special attacks) */
     const screenMultiplier = new Utils.NumberHolder(1);
-    this.scene.arena.applyTagsForSide(WeakenMoveScreenTag, defendingSide, simulated, moveCategory, screenMultiplier);
+    this.scene.arena.applyTagsForSide(WeakenMoveScreenTag, defendingSide, simulated, source, moveCategory, screenMultiplier);
 
     /**
      * For each {@linkcode HitsTagAttr} the move has, doubles the damage of the move if:
@@ -3542,13 +3554,12 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
       }
     }
 
-    const types = this.getTypes(true, true);
+    if (sourcePokemon && sourcePokemon !== this && this.isSafeguarded(sourcePokemon)) {
-
-    const defendingSide = this.isPlayer() ? ArenaTagSide.PLAYER : ArenaTagSide.ENEMY;
-    if (sourcePokemon && sourcePokemon !== this && this.scene.arena.getTagOnSide(ArenaTagType.SAFEGUARD, defendingSide)) {
       return false;
     }
 
+    const types = this.getTypes(true, true);
+
     switch (effect) {
       case StatusEffect.POISON:
       case StatusEffect.TOXIC:
@@ -3694,6 +3705,23 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
     }
   }
 
+  /**
+   * Checks if this Pokemon is protected by Safeguard
+   * @param attacker the {@linkcode Pokemon} inflicting status on this Pokemon
+   * @returns `true` if this Pokemon is protected by Safeguard; `false` otherwise.
+   */
+  isSafeguarded(attacker: Pokemon): boolean {
+    const defendingSide = this.isPlayer() ? ArenaTagSide.PLAYER : ArenaTagSide.ENEMY;
+    if (this.scene.arena.getTagOnSide(ArenaTagType.SAFEGUARD, defendingSide)) {
+      const bypassed = new Utils.BooleanHolder(false);
+      if (attacker) {
+        applyAbAttrs(InfiltratorAbAttr, attacker, null, false, bypassed);
+      }
+      return !bypassed.value;
+    }
+    return false;
+  }
+
   primeSummonData(summonDataPrimer: PokemonSummonData): void {
     this.summonDataPrimer = summonDataPrimer;
   }
@@ -4175,10 +4203,14 @@ export class PlayerPokemon extends Pokemon {
     if (Overrides.SHINY_OVERRIDE) {
       this.shiny = true;
       this.initShinySparkle();
-      if (Overrides.VARIANT_OVERRIDE) {
+    } else if (Overrides.SHINY_OVERRIDE === false) {
-        this.variant = Overrides.VARIANT_OVERRIDE;
+      this.shiny = false;
-      }
     }
+
+    if (Overrides.VARIANT_OVERRIDE !== null && this.shiny) {
+      this.variant = Overrides.VARIANT_OVERRIDE;
+    }
+
     if (!dataSource) {
       if (this.scene.gameMode.isDaily) {
         this.generateAndPopulateMoveset();
@@ -4490,12 +4522,33 @@ export class PlayerPokemon extends Pokemon {
 
   changeForm(formChange: SpeciesFormChange): Promise<void> {
     return new Promise(resolve => {
+      const previousFormIndex = this.formIndex;
       this.formIndex = Math.max(this.species.forms.findIndex(f => f.formKey === formChange.formKey), 0);
       this.generateName();
       const abilityCount = this.getSpeciesForm().getAbilityCount();
       if (this.abilityIndex >= abilityCount) { // Shouldn't happen
         this.abilityIndex = abilityCount - 1;
       }
+
+      // In cases where a form change updates the type of a Pokemon from its previous form (Arceus, Silvally, Castform, etc.),
+      // persist that type change in customPokemonData if necessary
+      const baseForm = this.species.forms[previousFormIndex];
+      const baseFormTypes = [ baseForm.type1, baseForm.type2 ];
+      if (this.customPokemonData.types.length > 0) {
+        if (this.getSpeciesForm().type1 !== baseFormTypes[0]) {
+          this.customPokemonData.types[0] = this.getSpeciesForm().type1;
+        }
+
+        const type2 = this.getSpeciesForm().type2;
+        if (!isNullOrUndefined(type2) && type2 !== baseFormTypes[1]) {
+          if (this.customPokemonData.types.length > 1) {
+            this.customPokemonData.types[1] = type2;
+          } else {
+            this.customPokemonData.types.push(type2);
+          }
+        }
+      }
+
       this.compatibleTms.splice(0, this.compatibleTms.length);
       this.generateCompatibleTms();
       const updateAndResolve = () => {
@@ -4532,7 +4585,7 @@ export class PlayerPokemon extends Pokemon {
       this.fusionVariant = pokemon.variant;
       this.fusionGender = pokemon.gender;
       this.fusionLuck = pokemon.luck;
-      this.fusionMysteryEncounterPokemonData = pokemon.mysteryEncounterPokemonData;
+      this.fusionCustomPokemonData = pokemon.customPokemonData;
       if ((pokemon.pauseEvolutions) || (this.pauseEvolutions)) {
         this.pauseEvolutions = true;
       }
@@ -4646,10 +4699,13 @@ export class EnemyPokemon extends Pokemon {
       if (Overrides.OPP_SHINY_OVERRIDE) {
         this.shiny = true;
         this.initShinySparkle();
+      } else if (Overrides.OPP_SHINY_OVERRIDE === false) {
+        this.shiny = false;
       }
+
       if (this.shiny) {
         this.variant = this.generateVariant();
-        if (Overrides.OPP_VARIANT_OVERRIDE) {
+        if (Overrides.OPP_VARIANT_OVERRIDE !== null) {
           this.variant = Overrides.OPP_VARIANT_OVERRIDE;
         }
       }

src/modifier/modifier-type.ts

@@ -1126,7 +1126,7 @@ class EvolutionItemModifierTypeGenerator extends ModifierTypeGenerator {
 }
 
 class FormChangeItemModifierTypeGenerator extends ModifierTypeGenerator {
-  constructor(rare: boolean) {
+  constructor(isRareFormChangeItem: boolean) {
     super((party: Pokemon[], pregenArgs?: any[]) => {
       if (pregenArgs && (pregenArgs.length === 1) && (pregenArgs[0] in FormChangeItem)) {
         return new FormChangeItemModifierType(pregenArgs[0] as FormChangeItem);
@@ -1167,7 +1167,7 @@ class FormChangeItemModifierTypeGenerator extends ModifierTypeGenerator {
         }
         return formChangeItemTriggers;
       }).flat())
-      ].flat().flatMap(fc => fc.item).filter(i => (i && i < 100) === rare);
+      ].flat().flatMap(fc => fc.item).filter(i => (i && i < 100) === isRareFormChangeItem);
       // convert it into a set to remove duplicate values, which can appear when the same species with a potential form change is in the party.
 
       if (!formChangeItemPool.length) {

src/modifier/modifier.ts

@@ -2181,7 +2181,7 @@ export class PokemonNatureChangeModifier extends ConsumablePokemonModifier {
    * @returns
    */
   override apply(playerPokemon: PlayerPokemon): boolean {
-    playerPokemon.natureOverride = this.nature;
+    playerPokemon.customPokemonData.nature = this.nature;
     let speciesId = playerPokemon.species.speciesId;
     playerPokemon.scene.gameData.dexData[speciesId].natureAttr |= 1 << (this.nature + 1);
 

src/overrides.ts

@@ -113,8 +113,8 @@ class DefaultOverrides {
   readonly STATUS_OVERRIDE: StatusEffect = StatusEffect.NONE;
   readonly GENDER_OVERRIDE: Gender | null = null;
   readonly MOVESET_OVERRIDE: Moves | Array<Moves> = [];
-  readonly SHINY_OVERRIDE: boolean = false;
+  readonly SHINY_OVERRIDE: boolean | null = null;
-  readonly VARIANT_OVERRIDE: Variant = 0;
+  readonly VARIANT_OVERRIDE: Variant | null = null;
 
   // --------------------------
   // OPPONENT / ENEMY OVERRIDES
@@ -134,8 +134,8 @@ class DefaultOverrides {
   readonly OPP_STATUS_OVERRIDE: StatusEffect = StatusEffect.NONE;
   readonly OPP_GENDER_OVERRIDE: Gender | null = null;
   readonly OPP_MOVESET_OVERRIDE: Moves | Array<Moves> = [];
-  readonly OPP_SHINY_OVERRIDE: boolean = false;
+  readonly OPP_SHINY_OVERRIDE: boolean | null = null;
-  readonly OPP_VARIANT_OVERRIDE: Variant = 0;
+  readonly OPP_VARIANT_OVERRIDE: Variant | null = null;
   readonly OPP_IVS_OVERRIDE: number | number[] = [];
   readonly OPP_FORM_OVERRIDES: Partial<Record<Species, number>> = {};
   /**

src/phases/encounter-phase.ts

@@ -35,6 +35,7 @@ import { getEncounterText } from "#app/data/mystery-encounters/utils/encounter-d
 import { MysteryEncounterPhase } from "#app/phases/mystery-encounter-phases";
 import { getGoldenBugNetSpecies } from "#app/data/mystery-encounters/utils/encounter-pokemon-utils";
 import { Biome } from "#enums/biome";
+import { WEIGHT_INCREMENT_ON_SPAWN_MISS } from "#app/data/mystery-encounters/mystery-encounters";
 
 export class EncounterPhase extends BattlePhase {
   private loaded: boolean;
@@ -68,7 +69,7 @@ export class EncounterPhase extends BattlePhase {
       this.scene.executeWithSeedOffset(() => {
         const currentSessionEncounterType = battle.mysteryEncounterType;
         battle.mysteryEncounter = this.scene.getMysteryEncounter(currentSessionEncounterType);
-      }, battle.waveIndex << 4);
+      }, battle.waveIndex * 16);
     }
     const mysteryEncounter = battle.mysteryEncounter;
     if (mysteryEncounter) {
@@ -252,6 +253,13 @@ export class EncounterPhase extends BattlePhase {
         this.scene.updateModifiers(true);
       }*/
 
+    const { battleType, waveIndex } = this.scene.currentBattle;
+    if (this.scene.isMysteryEncounterValidForWave(battleType,  waveIndex) && !this.scene.currentBattle.isBattleMysteryEncounter()) {
+      // Increment ME spawn chance if an ME could have spawned but did not
+      // Only do this AFTER session has been saved to avoid duplicating increments
+      this.scene.mysteryEncounterSaveData.encounterSpawnChance += WEIGHT_INCREMENT_ON_SPAWN_MISS;
+    }
+
     for (const pokemon of this.scene.getParty()) {
       if (pokemon) {
         pokemon.resetBattleData();

src/phases/learn-move-phase.ts

@@ -170,13 +170,16 @@ export class LearnMovePhase extends PlayerPartyMemberPokemonPhase {
     pokemon.setMove(index, this.moveId);
     initMoveAnim(this.scene, this.moveId).then(() => {
       loadMoveAnimAssets(this.scene, [ this.moveId ], true);
-      this.scene.playSound("level_up_fanfare"); // Sound loaded into game as is
     });
     this.scene.ui.setMode(this.messageMode);
     const learnMoveText = i18next.t("battle:learnMove", { pokemonName: getPokemonNameWithAffix(pokemon), moveName: move.name });
-    textMessage = textMessage ? textMessage + "$" + learnMoveText : learnMoveText;
+    if (textMessage) {
-    await this.scene.ui.showTextPromise(textMessage, this.messageMode === Mode.EVOLUTION_SCENE ? 1000 : undefined, true);
+      await this.scene.ui.showTextPromise(textMessage);
-    this.scene.triggerPokemonFormChange(pokemon, SpeciesFormChangeMoveLearnedTrigger, true);
+    }
-    this.end();
+    this.scene.playSound("level_up_fanfare"); // Sound loaded into game as is
+    this.scene.ui.showText(learnMoveText, null, () => {
+      this.scene.triggerPokemonFormChange(pokemon, SpeciesFormChangeMoveLearnedTrigger, true);
+      this.end();
+    }, this.messageMode === Mode.EVOLUTION_SCENE ? 1000 : undefined, true);
   }
 }

src/phases/move-effect-phase.ts

@@ -280,10 +280,8 @@ export class MoveEffectPhase extends PokemonPhase {
                           if (!user.isPlayer() && this.move.getMove() instanceof AttackMove) {
                             user.scene.applyShuffledModifiers(this.scene, EnemyAttackStatusEffectChanceModifier, false, target);
                           }
-                          target.lapseTag(BattlerTagType.BEAK_BLAST_CHARGING);
+                          target.lapseTags(BattlerTagLapseType.AFTER_HIT);
-                          if (move.category === MoveCategory.PHYSICAL && user.isPlayer() !== target.isPlayer()) {
+
-                            target.lapseTag(BattlerTagType.SHELL_TRAP);
-                          }
                         })).then(() => {
                           // Apply the user's post-attack ability effects
                           applyPostAttackAbAttrs(PostAttackAbAttr, user, target, this.move.getMove(), hitResult).then(() => {

src/phases/mystery-encounter-phases.ts

@@ -402,7 +402,7 @@ export class MysteryEncounterBattlePhase extends Phase {
       }
     }
 
-    const availablePartyMembers = scene.getParty().filter(p => !p.isFainted());
+    const availablePartyMembers = scene.getParty().filter(p => p.isAllowedInBattle());
 
     if (!availablePartyMembers[0].isOnField()) {
       scene.pushPhase(new SummonPhase(scene, 0));

src/phases/stat-stage-change-phase.ts

@@ -64,7 +64,8 @@ export class StatStageChangePhase extends PokemonPhase {
       const cancelled = new BooleanHolder(false);
 
       if (!this.selfTarget && stages.value < 0) {
-        this.scene.arena.applyTagsForSide(MistTag, pokemon.isPlayer() ? ArenaTagSide.PLAYER : ArenaTagSide.ENEMY, false, cancelled);
+        // TODO: add a reference to the source of the stat change to fix Infiltrator interaction
+        this.scene.arena.applyTagsForSide(MistTag, pokemon.isPlayer() ? ArenaTagSide.PLAYER : ArenaTagSide.ENEMY, false, null, false, cancelled);
       }
 
       if (!cancelled.value && !this.selfTarget && stages.value < 0) {

src/system/pokemon-data.ts

@@ -12,7 +12,7 @@ import { loadBattlerTag } from "../data/battler-tags";
 import { Biome } from "#enums/biome";
 import { Moves } from "#enums/moves";
 import { Species } from "#enums/species";
-import { MysteryEncounterPokemonData } from "#app/data/mystery-encounters/mystery-encounter-pokemon-data";
+import { CustomPokemonData } from "#app/data/custom-pokemon-data";
 
 export default class PokemonData {
   public id: integer;
@@ -33,7 +33,6 @@ export default class PokemonData {
   public stats: integer[];
   public ivs: integer[];
   public nature: Nature;
-  public natureOverride: Nature | -1;
   public moveset: (PokemonMove | null)[];
   public status: Status | null;
   public friendship: integer;
@@ -54,14 +53,20 @@ export default class PokemonData {
   public fusionVariant: Variant;
   public fusionGender: Gender;
   public fusionLuck: integer;
-  public fusionMysteryEncounterPokemonData: MysteryEncounterPokemonData;
 
   public boss: boolean;
   public bossSegments?: integer;
 
   public summonData: PokemonSummonData;
+
   /** Data that can customize a Pokemon in non-standard ways from its Species */
-  public mysteryEncounterPokemonData: MysteryEncounterPokemonData;
+  public customPokemonData: CustomPokemonData;
+  public fusionCustomPokemonData: CustomPokemonData;
+
+  // Deprecated attributes, needed for now to allow SessionData migration (see PR#4619 comments)
+  public natureOverride: Nature | -1;
+  public mysteryEncounterPokemonData: CustomPokemonData | null;
+  public fusionMysteryEncounterPokemonData: CustomPokemonData | null;
 
   constructor(source: Pokemon | any, forHistory: boolean = false) {
     const sourcePokemon = source instanceof Pokemon ? source : null;
@@ -107,9 +112,13 @@ export default class PokemonData {
     this.fusionVariant = source.fusionVariant;
     this.fusionGender = source.fusionGender;
     this.fusionLuck = source.fusionLuck !== undefined ? source.fusionLuck : (source.fusionShiny ? source.fusionVariant + 1 : 0);
+    this.fusionCustomPokemonData = new CustomPokemonData(source.fusionCustomPokemonData);
     this.usedTMs = source.usedTMs ?? [];
 
-    this.mysteryEncounterPokemonData = new MysteryEncounterPokemonData(source.mysteryEncounterPokemonData);
+    this.customPokemonData = new CustomPokemonData(source.customPokemonData);
+
+    this.mysteryEncounterPokemonData = new CustomPokemonData(source.mysteryEncounterPokemonData);
+    this.fusionMysteryEncounterPokemonData = new CustomPokemonData(source.fusionMysteryEncounterPokemonData);
 
     if (!forHistory) {
       this.boss = (source instanceof EnemyPokemon && !!source.bossSegments) || (!this.player && !!source.boss);

src/system/version_migration/version_converter.ts

@@ -4,6 +4,9 @@ import { version } from "../../../package.json";
 // --- v1.0.4 (and below) PATCHES --- //
 import * as v1_0_4 from "./versions/v1_0_4";
 
+// --- v1.1.0 PATCHES --- //
+import * as v1_1_0 from "./versions/v1_1_0";
+
 const LATEST_VERSION = version.split(".").map(value => parseInt(value));
 
 /**
@@ -131,6 +134,10 @@ class SessionVersionConverter extends VersionConverter {
           this.callMigrators(data, v1_0_4.sessionMigrators);
         }
       }
+      if (curMinor <= 1) {
+        console.log("Applying v1.1.0 session data migration!");
+        this.callMigrators(data, v1_1_0.sessionMigrators);
+      }
     }
 
     console.log(`Session data successfully migrated to v${version}!`);
@@ -153,6 +160,10 @@ class SystemVersionConverter extends VersionConverter {
           this.callMigrators(data, v1_0_4.systemMigrators);
         }
       }
+      if (curMinor <= 1) {
+        console.log("Applying v1.1.0 system data migraton!");
+        this.callMigrators(data, v1_1_0.systemMigrators);
+      }
     }
 
     console.log(`System data successfully migrated to v${version}!`);
@@ -175,6 +186,10 @@ class SettingsVersionConverter extends VersionConverter {
           this.callMigrators(data, v1_0_4.settingsMigrators);
         }
       }
+      if (curMinor <= 1) {
+        console.log("Applying v1.1.0 settings data migraton!");
+        this.callMigrators(data, v1_1_0.settingsMigrators);
+      }
     }
 
     console.log(`System data successfully migrated to v${version}!`);

src/system/version_migration/versions/v1_1_0.ts

@@ -0,0 +1,32 @@
+import { SessionSaveData } from "../../game-data";
+import { CustomPokemonData } from "#app/data/custom-pokemon-data";
+
+export const systemMigrators = [] as const;
+
+export const settingsMigrators = [] as const;
+
+export const sessionMigrators = [
+  /**
+   *  Converts old Pokemon natureOverride and mysteryEncounterData
+   *  to use the new conjoined {@linkcode Pokemon.customPokemonData} structure instead.
+   *  @param data {@linkcode SessionSaveData}
+   */
+  function migrateCustomPokemonDataAndNatureOverrides(data: SessionSaveData) {
+    // Fix Pokemon nature overrides and custom data migration
+    data.party.forEach(pokemon => {
+      if (pokemon["mysteryEncounterPokemonData"]) {
+        pokemon.customPokemonData = new CustomPokemonData(pokemon["mysteryEncounterPokemonData"]);
+        pokemon["mysteryEncounterPokemonData"] = null;
+      }
+      if (pokemon["fusionMysteryEncounterPokemonData"]) {
+        pokemon.fusionCustomPokemonData = new CustomPokemonData(pokemon["fusionMysteryEncounterPokemonData"]);
+        pokemon["fusionMysteryEncounterPokemonData"] = null;
+      }
+      pokemon.customPokemonData = pokemon.customPokemonData ?? new CustomPokemonData();
+      if (pokemon["natureOverride"] && pokemon["natureOverride"] >= 0) {
+        pokemon.customPokemonData.nature = pokemon["natureOverride"];
+        pokemon["natureOverride"] = -1;
+      }
+    });
+  }
+] as const;

src/test/abilities/infiltrator.test.ts

@@ -0,0 +1,107 @@
+import { ArenaTagSide } from "#app/data/arena-tag";
+import { allMoves } from "#app/data/move";
+import { ArenaTagType } from "#enums/arena-tag-type";
+import { BattlerTagType } from "#enums/battler-tag-type";
+import { Stat } from "#enums/stat";
+import { StatusEffect } from "#enums/status-effect";
+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";
+
+describe("Abilities - Infiltrator", () => {
+  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
+      .moveset([ Moves.TACKLE, Moves.WATER_GUN, Moves.SPORE, Moves.BABY_DOLL_EYES ])
+      .ability(Abilities.INFILTRATOR)
+      .battleType("single")
+      .disableCrits()
+      .enemySpecies(Species.SNORLAX)
+      .enemyAbility(Abilities.BALL_FETCH)
+      .enemyMoveset(Moves.SPLASH)
+      .startingLevel(100)
+      .enemyLevel(100);
+  });
+
+  it.each([
+    { effectName: "Light Screen", tagType: ArenaTagType.LIGHT_SCREEN, move: Moves.WATER_GUN },
+    { effectName: "Reflect", tagType: ArenaTagType.REFLECT, move: Moves.TACKLE },
+    { effectName: "Aurora Veil", tagType: ArenaTagType.AURORA_VEIL, move: Moves.TACKLE }
+  ])("should bypass the target's $effectName", async ({ tagType, move }) => {
+    await game.classicMode.startBattle([ Species.MAGIKARP ]);
+
+    const player = game.scene.getPlayerPokemon()!;
+    const enemy = game.scene.getEnemyPokemon()!;
+
+    const preScreenDmg = enemy.getAttackDamage(player, allMoves[move]).damage;
+
+    game.scene.arena.addTag(tagType, 1, Moves.NONE, enemy.id, ArenaTagSide.ENEMY, true);
+
+    const postScreenDmg = enemy.getAttackDamage(player, allMoves[move]).damage;
+
+    expect(postScreenDmg).toBe(preScreenDmg);
+    expect(player.battleData.abilitiesApplied[0]).toBe(Abilities.INFILTRATOR);
+  });
+
+  it("should bypass the target's Safeguard", async () => {
+    await game.classicMode.startBattle([ Species.MAGIKARP ]);
+
+    const player = game.scene.getPlayerPokemon()!;
+    const enemy = game.scene.getEnemyPokemon()!;
+
+    game.scene.arena.addTag(ArenaTagType.SAFEGUARD, 1, Moves.NONE, enemy.id, ArenaTagSide.ENEMY, true);
+
+    game.move.select(Moves.SPORE);
+
+    await game.phaseInterceptor.to("BerryPhase", false);
+    expect(enemy.status?.effect).toBe(StatusEffect.SLEEP);
+    expect(player.battleData.abilitiesApplied[0]).toBe(Abilities.INFILTRATOR);
+  });
+
+  // TODO: fix this interaction to pass this test
+  it.skip("should bypass the target's Mist", async () => {
+    await game.classicMode.startBattle([ Species.MAGIKARP ]);
+
+    const player = game.scene.getPlayerPokemon()!;
+    const enemy = game.scene.getEnemyPokemon()!;
+
+    game.scene.arena.addTag(ArenaTagType.MIST, 1, Moves.NONE, enemy.id, ArenaTagSide.ENEMY, true);
+
+    game.move.select(Moves.BABY_DOLL_EYES);
+
+    await game.phaseInterceptor.to("MoveEndPhase");
+    expect(enemy.getStatStage(Stat.ATK)).toBe(-1);
+    expect(player.battleData.abilitiesApplied[0]).toBe(Abilities.INFILTRATOR);
+  });
+
+  it("should bypass the target's Substitute", async () => {
+    await game.classicMode.startBattle([ Species.MAGIKARP ]);
+
+    const player = game.scene.getPlayerPokemon()!;
+    const enemy = game.scene.getEnemyPokemon()!;
+
+    enemy.addTag(BattlerTagType.SUBSTITUTE, 1, Moves.NONE, enemy.id);
+
+    game.move.select(Moves.BABY_DOLL_EYES);
+
+    await game.phaseInterceptor.to("MoveEndPhase");
+    expect(enemy.getStatStage(Stat.ATK)).toBe(-1);
+    expect(player.battleData.abilitiesApplied[0]).toBe(Abilities.INFILTRATOR);
+  });
+});

src/test/moves/aurora_veil.test.ts

@@ -111,7 +111,7 @@ const getMockedMoveDamage = (defender: Pokemon, attacker: Pokemon, move: Move) =
   const side = defender.isPlayer() ? ArenaTagSide.PLAYER : ArenaTagSide.ENEMY;
 
   if (defender.scene.arena.getTagOnSide(ArenaTagType.AURORA_VEIL, side)) {
-    defender.scene.arena.applyTagsForSide(ArenaTagType.AURORA_VEIL, side, false, move.category, multiplierHolder);
+    defender.scene.arena.applyTagsForSide(ArenaTagType.AURORA_VEIL, side, false, attacker, move.category, multiplierHolder);
   }
 
   return move.power * multiplierHolder.value;

src/test/moves/light_screen.test.ts

@@ -94,7 +94,7 @@ const getMockedMoveDamage = (defender: Pokemon, attacker: Pokemon, move: Move) =
   const side = defender.isPlayer() ? ArenaTagSide.PLAYER : ArenaTagSide.ENEMY;
 
   if (defender.scene.arena.getTagOnSide(ArenaTagType.LIGHT_SCREEN, side)) {
-    defender.scene.arena.applyTagsForSide(ArenaTagType.LIGHT_SCREEN, side, false, move.category, multiplierHolder);
+    defender.scene.arena.applyTagsForSide(ArenaTagType.LIGHT_SCREEN, side, false, attacker, move.category, multiplierHolder);
   }
 
   return move.power * multiplierHolder.value;

src/test/moves/nightmare.test.ts

@@ -0,0 +1,54 @@
+import { CommandPhase } from "#app/phases/command-phase";
+import { TurnInitPhase } from "#app/phases/turn-init-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 { StatusEffect } from "#app/data/status-effect";
+
+describe("Moves - Nightmare", () => {
+  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")
+      .enemySpecies(Species.RATTATA)
+      .enemyMoveset(Moves.SPLASH)
+      .enemyAbility(Abilities.BALL_FETCH)
+      .enemyStatusEffect(StatusEffect.SLEEP)
+      .startingLevel(5)
+      .moveset([ Moves.NIGHTMARE, Moves.SPLASH ]);
+  });
+
+  it("lowers enemy hp by 1/4 each turn while asleep", async () => {
+    await game.classicMode.startBattle([ Species.HYPNO ]);
+
+    const enemyPokemon = game.scene.getEnemyPokemon()!;
+    const enemyMaxHP = enemyPokemon.hp;
+    game.move.select(Moves.NIGHTMARE);
+    await game.phaseInterceptor.to(TurnInitPhase);
+
+    expect(enemyPokemon.hp).toBe(enemyMaxHP - Math.floor(enemyMaxHP / 4));
+
+    // take a second turn to make sure damage occurs again
+    await game.phaseInterceptor.to(CommandPhase);
+    game.move.select(Moves.SPLASH);
+
+    await game.phaseInterceptor.to(TurnInitPhase);
+    expect(enemyPokemon.hp).toBe(enemyMaxHP - Math.floor(enemyMaxHP / 4) - Math.floor(enemyMaxHP / 4));
+  });
+});

src/test/moves/reflect.test.ts

@@ -94,7 +94,7 @@ const getMockedMoveDamage = (defender: Pokemon, attacker: Pokemon, move: Move) =
   const side = defender.isPlayer() ? ArenaTagSide.PLAYER : ArenaTagSide.ENEMY;
 
   if (defender.scene.arena.getTagOnSide(ArenaTagType.REFLECT, side)) {
-    defender.scene.arena.applyTagsForSide(ArenaTagType.REFLECT, side, false, move.category, multiplierHolder);
+    defender.scene.arena.applyTagsForSide(ArenaTagType.REFLECT, side, false, attacker, move.category, multiplierHolder);
   }
 
   return move.power * multiplierHolder.value;

src/test/moves/toxic_spikes.test.ts

@@ -9,8 +9,6 @@ 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 - Toxic Spikes", () => {
   let phaserGame: Phaser.Game;
   let game: GameManager;
@@ -34,10 +32,10 @@ describe("Moves - Toxic Spikes", () => {
       .enemyAbility(Abilities.BALL_FETCH)
       .ability(Abilities.BALL_FETCH)
       .enemyMoveset(Moves.SPLASH)
-      .moveset([ Moves.TOXIC_SPIKES, Moves.SPLASH, Moves.ROAR ]);
+      .moveset([ Moves.TOXIC_SPIKES, Moves.SPLASH, Moves.ROAR, Moves.COURT_CHANGE ]);
   });
 
-  it("should not affect the opponent if they do not switch", async() => {
+  it("should not affect the opponent if they do not switch", async () => {
     await game.classicMode.runToSummon([ Species.MIGHTYENA, Species.POOCHYENA ]);
 
     const enemy = game.scene.getEnemyField()[0];
@@ -51,9 +49,9 @@ describe("Moves - Toxic Spikes", () => {
 
     expect(enemy.hp).toBe(enemy.getMaxHp());
     expect(enemy.status?.effect).toBeUndefined();
-  }, TIMEOUT);
+  });
 
-  it("should poison the opponent if they switch into 1 layer", async() => {
+  it("should poison the opponent if they switch into 1 layer", async () => {
     await game.classicMode.runToSummon([ Species.MIGHTYENA ]);
 
     game.move.select(Moves.TOXIC_SPIKES);
@@ -65,9 +63,9 @@ describe("Moves - Toxic Spikes", () => {
 
     expect(enemy.hp).toBeLessThan(enemy.getMaxHp());
     expect(enemy.status?.effect).toBe(StatusEffect.POISON);
-  }, TIMEOUT);
+  });
 
-  it("should badly poison the opponent if they switch into 2 layers", async() => {
+  it("should badly poison the opponent if they switch into 2 layers", async () => {
     await game.classicMode.runToSummon([ Species.MIGHTYENA ]);
 
     game.move.select(Moves.TOXIC_SPIKES);
@@ -80,27 +78,32 @@ describe("Moves - Toxic Spikes", () => {
     const enemy = game.scene.getEnemyField()[0];
     expect(enemy.hp).toBeLessThan(enemy.getMaxHp());
     expect(enemy.status?.effect).toBe(StatusEffect.TOXIC);
-  }, TIMEOUT);
+  });
 
-  it("should be removed if a grounded poison pokemon switches in", async() => {
+  it("should be removed if a grounded poison pokemon switches in", async () => {
-    game.override.enemySpecies(Species.GRIMER);
+    await game.classicMode.runToSummon([ Species.MUK, Species.PIDGEY ]);
-    await game.classicMode.runToSummon([ Species.MIGHTYENA ]);
+
+    const muk = game.scene.getPlayerPokemon()!;
 
     game.move.select(Moves.TOXIC_SPIKES);
-    await game.phaseInterceptor.to("TurnEndPhase");
+    await game.toNextTurn();
-    game.move.select(Moves.TOXIC_SPIKES);
+    // also make sure the toxic spikes are removed even if the pokemon
-    await game.phaseInterceptor.to("TurnEndPhase");
+    // that set them up is the one switching in (https://github.com/pagefaultgames/pokerogue/issues/935)
-    game.move.select(Moves.ROAR);
+    game.move.select(Moves.COURT_CHANGE);
-    await game.phaseInterceptor.to("TurnEndPhase");
+    await game.toNextTurn();
-
+    game.doSwitchPokemon(1);
-    const enemy = game.scene.getEnemyField()[0];
+    await game.toNextTurn();
-    expect(enemy.hp).toBe(enemy.getMaxHp());
+    game.doSwitchPokemon(1);
-    expect(enemy.status?.effect).toBeUndefined();
+    await game.toNextTurn();
+    game.move.select(Moves.SPLASH);
+    await game.toNextTurn();
 
+    expect(muk.isFullHp()).toBe(true);
+    expect(muk.status?.effect).toBeUndefined();
     expect(game.scene.arena.tags.length).toBe(0);
-  }, TIMEOUT);
+  });
 
-  it("shouldn't create multiple layers per use in doubles", async() => {
+  it("shouldn't create multiple layers per use in doubles", async () => {
     await game.classicMode.runToSummon([ Species.MIGHTYENA, Species.POOCHYENA ]);
 
     game.move.select(Moves.TOXIC_SPIKES);
@@ -109,9 +112,9 @@ describe("Moves - Toxic Spikes", () => {
     const arenaTags = (game.scene.arena.getTagOnSide(ArenaTagType.TOXIC_SPIKES, ArenaTagSide.ENEMY) as ArenaTrapTag);
     expect(arenaTags.tagType).toBe(ArenaTagType.TOXIC_SPIKES);
     expect(arenaTags.layers).toBe(1);
-  }, TIMEOUT);
+  });
 
-  it("should persist through reload", async() => {
+  it("should persist through reload", async () => {
     game.override.startingWave(1);
     const scene = game.scene;
     const gameData = new GameData(scene);
@@ -132,5 +135,5 @@ describe("Moves - Toxic Spikes", () => {
 
     expect(sessionData.arena.tags).toEqual(recoveredData.arena.tags);
     localStorage.removeItem("sessionTestData");
-  }, TIMEOUT);
+  });
 });

src/test/mystery-encounter/encounters/bug-type-superfan-encounter.test.ts

@@ -476,10 +476,11 @@ describe("Bug-Type Superfan - Mystery Encounter", () => {
 
       expect(scene.ui.getMode()).to.equal(Mode.MODIFIER_SELECT);
       const modifierSelectHandler = scene.ui.handlers.find(h => h instanceof ModifierSelectUiHandler) as ModifierSelectUiHandler;
-      expect(modifierSelectHandler.options.length).toEqual(3);
+      expect(modifierSelectHandler.options.length).toEqual(4);
       expect(modifierSelectHandler.options[0].modifierTypeOption.type.id).toBe("MASTER_BALL");
-      expect(modifierSelectHandler.options[1].modifierTypeOption.type.id).toBe("MAX_LURE");
+      expect(modifierSelectHandler.options[1].modifierTypeOption.type.id).toBe("MEGA_BRACELET");
-      expect(modifierSelectHandler.options[2].modifierTypeOption.type.id).toBe("FORM_CHANGE_ITEM");
+      expect(modifierSelectHandler.options[2].modifierTypeOption.type.id).toBe("DYNAMAX_BAND");
+      expect(modifierSelectHandler.options[3].modifierTypeOption.type.id).toBe("FORM_CHANGE_ITEM");
     });
 
     it("should leave encounter without battle", async () => {

src/test/mystery-encounter/encounters/clowning-around-encounter.test.ts

@@ -118,11 +118,11 @@ describe("Clowning Around - Mystery Encounter", () => {
     });
     expect(config.pokemonConfigs?.[1]).toEqual({
       species: getPokemonSpecies(Species.BLACEPHALON),
-      mysteryEncounterPokemonData: expect.anything(),
+      customPokemonData: expect.anything(),
       isBoss: true,
       moveSet: [ Moves.TRICK, Moves.HYPNOSIS, Moves.SHADOW_BALL, Moves.MIND_BLOWN ]
     });
-    expect(config.pokemonConfigs?.[1].mysteryEncounterPokemonData?.types.length).toBe(2);
+    expect(config.pokemonConfigs?.[1].customPokemonData?.types.length).toBe(2);
     expect([
       Abilities.STURDY,
       Abilities.PICKUP,
@@ -139,8 +139,8 @@ describe("Clowning Around - Mystery Encounter", () => {
       Abilities.MAGICIAN,
       Abilities.SHEER_FORCE,
       Abilities.PRANKSTER
-    ]).toContain(config.pokemonConfigs?.[1].mysteryEncounterPokemonData?.ability);
+    ]).toContain(config.pokemonConfigs?.[1].customPokemonData?.ability);
-    expect(ClowningAroundEncounter.misc.ability).toBe(config.pokemonConfigs?.[1].mysteryEncounterPokemonData?.ability);
+    expect(ClowningAroundEncounter.misc.ability).toBe(config.pokemonConfigs?.[1].customPokemonData?.ability);
     await vi.waitFor(() => expect(moveInitSpy).toHaveBeenCalled());
     await vi.waitFor(() => expect(moveLoadSpy).toHaveBeenCalled());
     expect(onInitResult).toBe(true);
@@ -219,7 +219,7 @@ describe("Clowning Around - Mystery Encounter", () => {
       await game.phaseInterceptor.to(NewBattlePhase, false);
 
       const leadPokemon = scene.getParty()[0];
-      expect(leadPokemon.mysteryEncounterPokemonData?.ability).toBe(abilityToTrain);
+      expect(leadPokemon.customPokemonData?.ability).toBe(abilityToTrain);
     });
   });
 
@@ -340,9 +340,9 @@ describe("Clowning Around - Mystery Encounter", () => {
       scene.getParty()[2].moveset = [];
       await runMysteryEncounterToEnd(game, 3);
 
-      const leadTypesAfter = scene.getParty()[0].mysteryEncounterPokemonData?.types;
+      const leadTypesAfter = scene.getParty()[0].customPokemonData?.types;
-      const secondaryTypesAfter = scene.getParty()[1].mysteryEncounterPokemonData?.types;
+      const secondaryTypesAfter = scene.getParty()[1].customPokemonData?.types;
-      const thirdTypesAfter = scene.getParty()[2].mysteryEncounterPokemonData?.types;
+      const thirdTypesAfter = scene.getParty()[2].customPokemonData?.types;
 
       expect(leadTypesAfter.length).toBe(2);
       expect(leadTypesAfter[0]).toBe(Type.WATER);

src/test/mystery-encounter/encounters/the-strong-stuff-encounter.test.ts

@@ -21,7 +21,7 @@ import { BerryModifier, PokemonBaseStatTotalModifier } from "#app/modifier/modif
 import { MysteryEncounterOptionMode } from "#enums/mystery-encounter-option-mode";
 import { MysteryEncounterTier } from "#enums/mystery-encounter-tier";
 import { initSceneWithoutEncounterPhase } from "#test/utils/gameManagerUtils";
-import { MysteryEncounterPokemonData } from "#app/data/mystery-encounters/mystery-encounter-pokemon-data";
+import { CustomPokemonData } from "#app/data/custom-pokemon-data";
 import { CommandPhase } from "#app/phases/command-phase";
 import { MovePhase } from "#app/phases/move-phase";
 import { SelectModifierPhase } from "#app/phases/select-modifier-phase";
@@ -109,7 +109,7 @@ describe("The Strong Stuff - Mystery Encounter", () => {
             species: getPokemonSpecies(Species.SHUCKLE),
             isBoss: true,
             bossSegments: 5,
-            mysteryEncounterPokemonData: new MysteryEncounterPokemonData({ spriteScale: 1.25 }),
+            customPokemonData: new CustomPokemonData({ spriteScale: 1.25 }),
             nature: Nature.BOLD,
             moveSet: [ Moves.INFESTATION, Moves.SALT_CURE, Moves.GASTRO_ACID, Moves.HEAL_ORDER ],
             modifierConfigs: expect.any(Array),

src/test/mystery-encounter/encounters/weird-dream-encounter.test.ts

@@ -122,7 +122,7 @@ describe("Weird Dream - Mystery Encounter", () => {
       for (let i = 0; i < pokemonAfter.length; i++) {
         const newPokemon = pokemonAfter[i];
         expect(newPokemon.getSpeciesForm().speciesId).not.toBe(pokemonPrior[i].getSpeciesForm().speciesId);
-        expect(newPokemon.mysteryEncounterPokemonData?.types.length).toBe(2);
+        expect(newPokemon.customPokemonData?.types.length).toBe(2);
       }
 
       const plus90To110 = bstDiff.filter(bst => bst > 80);

src/test/utils/helpers/challengeModeHelper.ts

@@ -38,6 +38,10 @@ export class ChallengeModeHelper extends GameManagerHelper {
   async runToSummon(species?: Species[]) {
     await this.game.runToTitle();
 
+    if (this.game.override.disableShinies) {
+      this.game.override.shiny(false).enemyShiny(false);
+    }
+
     this.game.onNextPrompt("TitlePhase", Mode.TITLE, () => {
       this.game.scene.gameMode.challenges = this.challenges;
       const starters = generateStarter(this.game.scene, species);
@@ -47,7 +51,7 @@ export class ChallengeModeHelper extends GameManagerHelper {
     });
 
     await this.game.phaseInterceptor.run(EncounterPhase);
-    if (overrides.OPP_HELD_ITEMS_OVERRIDE.length === 0) {
+    if (overrides.OPP_HELD_ITEMS_OVERRIDE.length === 0 && this.game.override.removeEnemyStartingItems) {
       this.game.removeEnemyHeldItems();
     }
   }

src/test/utils/helpers/classicModeHelper.ts

@@ -20,9 +20,13 @@ export class ClassicModeHelper extends GameManagerHelper {
    * @param species - Optional array of species to summon.
    * @returns A promise that resolves when the summon phase is reached.
    */
-  async runToSummon(species?: Species[]) {
+  async runToSummon(species?: Species[]): Promise<void> {
     await this.game.runToTitle();
 
+    if (this.game.override.disableShinies) {
+      this.game.override.shiny(false).enemyShiny(false);
+    }
+
     this.game.onNextPrompt("TitlePhase", Mode.TITLE, () => {
       this.game.scene.gameMode = getGameMode(GameModes.CLASSIC);
       const starters = generateStarter(this.game.scene, species);
@@ -32,7 +36,7 @@ export class ClassicModeHelper extends GameManagerHelper {
     });
 
     await this.game.phaseInterceptor.run(EncounterPhase);
-    if (overrides.OPP_HELD_ITEMS_OVERRIDE.length === 0) {
+    if (overrides.OPP_HELD_ITEMS_OVERRIDE.length === 0 && this.game.override.removeEnemyStartingItems) {
       this.game.removeEnemyHeldItems();
     }
   }
@@ -42,7 +46,7 @@ export class ClassicModeHelper extends GameManagerHelper {
    * @param species - Optional array of species to start the battle with.
    * @returns A promise that resolves when the battle is started.
    */
-  async startBattle(species?: Species[]) {
+  async startBattle(species?: Species[]): Promise<void> {
     await this.runToSummon(species);
 
     if (this.game.scene.battleStyle === BattleStyle.SWITCH) {

src/test/utils/helpers/dailyModeHelper.ts

@@ -21,6 +21,10 @@ export class DailyModeHelper extends GameManagerHelper {
   async runToSummon() {
     await this.game.runToTitle();
 
+    if (this.game.override.disableShinies) {
+      this.game.override.shiny(false).enemyShiny(false);
+    }
+
     this.game.onNextPrompt("TitlePhase", Mode.TITLE, () => {
       const titlePhase = new TitlePhase(this.game.scene);
       titlePhase.initDailyRun();
@@ -33,7 +37,7 @@ export class DailyModeHelper extends GameManagerHelper {
 
     await this.game.phaseInterceptor.to(EncounterPhase);
 
-    if (overrides.OPP_HELD_ITEMS_OVERRIDE.length === 0) {
+    if (overrides.OPP_HELD_ITEMS_OVERRIDE.length === 0 && this.game.override.removeEnemyStartingItems) {
       this.game.removeEnemyHeldItems();
     }
   }

src/test/utils/helpers/overridesHelper.ts

@@ -19,6 +19,11 @@ import { MysteryEncounterTier } from "#enums/mystery-encounter-tier";
  * Helper to handle overrides in tests
  */
 export class OverridesHelper extends GameManagerHelper {
+  /** If `true`, removes the starting items from enemies at the start of each test; default `true` */
+  public removeEnemyStartingItems: boolean = true;
+  /** If `true`, sets the shiny overrides to disable shinies at the start of each test; default `true` */
+  public disableShinies: boolean = true;
+
   /**
    * Override the starting biome
    * @warning Any event listeners that are attached to [NewArenaEvent](events\battle-scene.ts) may need to be handled down the line
@@ -368,23 +373,50 @@ export class OverridesHelper extends GameManagerHelper {
 
   /**
    * Override player shininess
-   * @param shininess Whether the player's Pokemon should be shiny.
+   * @param shininess - `true` or `false` to force the player's pokemon to be shiny or not shiny,
+   *   `null` to disable the override and re-enable RNG shinies.
    */
-  shinyLevel(shininess: boolean): this {
+  shiny(shininess: boolean | null): this {
     vi.spyOn(Overrides, "SHINY_OVERRIDE", "get").mockReturnValue(shininess);
-    this.log(`Set player Pokemon as ${shininess ? "" : "not "}shiny!`);
+    if (shininess === null) {
+      this.log("Disabled player Pokemon shiny override!");
+    } else {
+      this.log(`Set player Pokemon to be ${shininess ? "" : "not "}shiny!`);
+    }
     return this;
   }
+
   /**
    * Override player shiny variant
-   * @param variant The player's shiny variant.
+   * @param variant - The player's shiny variant.
    */
-  variantLevel(variant: Variant): this {
+  shinyVariant(variant: Variant): this {
     vi.spyOn(Overrides, "VARIANT_OVERRIDE", "get").mockReturnValue(variant);
     this.log(`Set player Pokemon's shiny variant to ${variant}!`);
     return this;
   }
 
+  /**
+   * Override enemy shininess
+   * @param shininess - `true` or `false` to force the enemy's pokemon to be shiny or not shiny,
+   *   `null` to disable the override and re-enable RNG shinies.
+   * @param variant - (Optional) The enemy's shiny {@linkcode Variant}.
+   */
+  enemyShiny(shininess: boolean | null, variant?: Variant): this {
+    vi.spyOn(Overrides, "OPP_SHINY_OVERRIDE", "get").mockReturnValue(shininess);
+    if (shininess === null) {
+      this.log("Disabled enemy Pokemon shiny override!");
+    } else {
+      this.log(`Set enemy Pokemon to be ${shininess ? "" : "not "}shiny!`);
+    }
+
+    if (variant !== undefined) {
+      vi.spyOn(Overrides, "OPP_VARIANT_OVERRIDE", "get").mockReturnValue(variant);
+      this.log(`Set enemy shiny variant to be ${variant}!`);
+    }
+    return this;
+  }
+
   /**
    * Override the enemy (Pokemon) to have the given amount of health segments
    * @param healthSegments the number of segments to give