Merge branch 'beta' into pr-illusion

src/battle-scene.ts

@@ -96,6 +96,7 @@ import { ExpPhase } from "#app/phases/exp-phase";
 import { ShowPartyExpBarPhase } from "#app/phases/show-party-exp-bar-phase";
 import { MysteryEncounterMode } from "#enums/mystery-encounter-mode";
 import { ExpGainsSpeed } from "#enums/exp-gains-speed";
+import { BattlerTagType } from "#enums/battler-tag-type";
 import { FRIENDSHIP_GAIN_FROM_BATTLE } from "#app/data/balance/starters";
 
 export const bypassLogin = import.meta.env.VITE_BYPASS_LOGIN === "1";
@@ -1278,6 +1279,8 @@ export default class BattleScene extends SceneBase {
       if (resetArenaState) {
         this.arena.resetArenaEffects();
 
+        playerField.forEach((pokemon) => pokemon.lapseTag(BattlerTagType.COMMANDED));
+
         playerField.forEach((pokemon, p) => {
           if (pokemon.isOnField()) {
             this.pushPhase(new ReturnPhase(this, p));

src/data/ability.ts

@@ -4,7 +4,7 @@ import { Constructor } from "#app/utils";
 import * as Utils from "../utils";
 import { getPokemonNameWithAffix } from "../messages";
 import { Weather, WeatherType } from "./weather";
-import { BattlerTag, GroundedTag } from "./battler-tags";
+import { BattlerTag, BattlerTagLapseType, GroundedTag } from "./battler-tags";
 import { StatusEffect, getNonVolatileStatusEffects, getStatusEffectDescriptor, getStatusEffectHealText } from "./status-effect";
 import { Gender } from "./gender";
 import Move, { AttackMove, MoveCategory, MoveFlags, MoveTarget, FlinchAttr, OneHitKOAttr, HitHealAttr, allMoves, StatusMove, SelfStatusMove, VariablePowerAttr, applyMoveAttrs, IncrementMovePriorityAttr, VariableMoveTypeAttr, RandomMovesetMoveAttr, RandomMoveAttr, NaturePowerAttr, CopyMoveAttr, MoveAttr, MultiHitAttr, SacrificialAttr, SacrificialAttrOnHit, NeutralDamageAgainstFlyingTypeMultiplierAttr, FixedDamageAttr } from "./move";
@@ -35,6 +35,7 @@ import { SwitchSummonPhase } from "#app/phases/switch-summon-phase";
 import { BattleEndPhase } from "#app/phases/battle-end-phase";
 import { NewBattlePhase } from "#app/phases/new-battle-phase";
 import { MoveEndPhase } from "#app/phases/move-end-phase";
+import { PokemonAnimType } from "#enums/pokemon-anim-type";
 
 export class Ability implements Localizable {
   public id: Abilities;
@@ -511,7 +512,11 @@ export class NonSuperEffectiveImmunityAbAttr extends TypeImmunityAbAttr {
   }
 
   applyPreDefend(pokemon: Pokemon, passive: boolean, simulated: boolean, attacker: Pokemon, move: Move, cancelled: Utils.BooleanHolder, args: any[]): boolean {
-    if (move instanceof AttackMove && pokemon.getAttackTypeEffectiveness(attacker.getMoveType(move), attacker) < 2) {
+    const modifierValue = args.length > 0
+      ? (args[0] as Utils.NumberHolder).value
+      : pokemon.getAttackTypeEffectiveness(attacker.getMoveType(move), attacker);
+
+    if (move instanceof AttackMove && modifierValue < 2) {
       cancelled.value = true; // Suppresses "No Effect" message
       (args[0] as Utils.NumberHolder).value = 0;
       return true;
@@ -2605,6 +2610,42 @@ export class PostSummonFormChangeByWeatherAbAttr extends PostSummonAbAttr {
   }
 }
 
+/**
+ * Attribute implementing the effects of {@link https://bulbapedia.bulbagarden.net/wiki/Commander_(Ability) | Commander}.
+ * When the source of an ability with this attribute detects a Dondozo as their active ally, the source "jumps
+ * into the Dondozo's mouth," sharply boosting the Dondozo's stats, cancelling the source's moves, and
+ * causing attacks that target the source to always miss.
+ */
+export class CommanderAbAttr extends AbAttr {
+  constructor() {
+    super(true);
+  }
+
+  override apply(pokemon: Pokemon, passive: boolean, simulated: boolean, cancelled: null, args: any[]): boolean {
+    // TODO: Should this work with X + Dondozo fusions?
+    if (pokemon.scene.currentBattle?.double && pokemon.getAlly()?.species.speciesId === Species.DONDOZO) {
+      // If the ally Dondozo is fainted or was previously "commanded" by
+      // another Pokemon, this effect cannot apply.
+      if (pokemon.getAlly().isFainted() || pokemon.getAlly().getTag(BattlerTagType.COMMANDED)) {
+        return false;
+      }
+
+      if (!simulated) {
+        // Lapse the source's semi-invulnerable tags (to avoid visual inconsistencies)
+        pokemon.lapseTags(BattlerTagLapseType.MOVE_EFFECT);
+        // Play an animation of the source jumping into the ally Dondozo's mouth
+        pokemon.scene.triggerPokemonBattleAnim(pokemon, PokemonAnimType.COMMANDER_APPLY);
+        // Apply boosts from this effect to the ally Dondozo
+        pokemon.getAlly().addTag(BattlerTagType.COMMANDED, 0, Moves.NONE, pokemon.id);
+        // Cancel the source Pokemon's next move (if a move is queued)
+        pokemon.scene.tryRemovePhase((phase) => phase instanceof MovePhase && phase.pokemon === pokemon);
+      }
+      return true;
+    }
+    return false;
+  }
+}
+
 export class PreSwitchOutAbAttr extends AbAttr {
   constructor() {
     super(true);
@@ -6219,7 +6260,8 @@ export function initAbilities() {
       .attr(NoFusionAbilityAbAttr)
       .attr(UncopiableAbilityAbAttr)
       .attr(UnswappableAbilityAbAttr)
-      .bypassFaint(),
+      .bypassFaint()
+      .edgeCase(), // Soft-locks the game if a form-changed Cramorant and its attacker both faint at the same time (ex. using Self-Destruct)
     new Ability(Abilities.STALWART, 8)
       .attr(BlockRedirectAbAttr),
     new Ability(Abilities.STEAM_ENGINE, 8)
@@ -6363,9 +6405,11 @@ export function initAbilities() {
       .attr(PreSwitchOutFormChangeAbAttr, (pokemon) => !pokemon.isFainted() ? 1 : pokemon.formIndex)
       .bypassFaint(),
     new Ability(Abilities.COMMANDER, 9)
+      .attr(CommanderAbAttr)
+      .attr(DoubleBattleChanceAbAttr)
       .attr(UncopiableAbilityAbAttr)
       .attr(UnswappableAbilityAbAttr)
-      .unimplemented(),
+      .edgeCase(), // Encore, Frenzy, and other non-`TURN_END` tags don't lapse correctly on the commanding Pokemon.
     new Ability(Abilities.ELECTROMORPHOSIS, 9)
       .attr(PostDefendApplyBattlerTagAbAttr, (target, user, move) => move.category !== MoveCategory.STATUS, BattlerTagType.CHARGED),
     new Ability(Abilities.PROTOSYNTHESIS, 9)

src/data/battler-tags.ts

@@ -2091,6 +2091,37 @@ export class IceFaceBlockDamageTag extends FormBlockDamageTag {
   }
 }
 
+/**
+ * Battler tag indicating a Tatsugiri with {@link https://bulbapedia.bulbagarden.net/wiki/Commander_(Ability) | Commander}
+ * has entered the tagged Pokemon's mouth.
+ */
+export class CommandedTag extends BattlerTag {
+  private _tatsugiriFormKey: string;
+
+  constructor(sourceId: number) {
+    super(BattlerTagType.COMMANDED, BattlerTagLapseType.CUSTOM, 0, Moves.NONE, sourceId);
+  }
+
+  public get tatsugiriFormKey(): string {
+    return this._tatsugiriFormKey;
+  }
+
+  /** Caches the Tatsugiri's form key and sharply boosts the tagged Pokemon's stats */
+  override onAdd(pokemon: Pokemon): void {
+    this._tatsugiriFormKey = this.getSourcePokemon(pokemon.scene)?.getFormKey() ?? "curly";
+    pokemon.scene.unshiftPhase(new StatStageChangePhase(
+      pokemon.scene, pokemon.getBattlerIndex(), true, [ Stat.ATK, Stat.DEF, Stat.SPATK, Stat.SPDEF, Stat.SPD ], 2
+    ));
+  }
+
+  /** Triggers an {@linkcode PokemonAnimType | animation} of the tagged Pokemon "spitting out" Tatsugiri */
+  override onRemove(pokemon: Pokemon): void {
+    if (this.getSourcePokemon(pokemon.scene)?.isActive(true)) {
+      pokemon.scene.triggerPokemonBattleAnim(pokemon, PokemonAnimType.COMMANDER_REMOVE);
+    }
+  }
+}
+
 /**
  * Battler tag enabling the Stockpile mechanic. This tag handles:
  * - Stack tracking, including max limit enforcement (which is replicated in Stockpile for redundancy).
@@ -2796,6 +2827,45 @@ export class PowerTrickTag extends BattlerTag {
   }
 }
 
+/**
+ * Tag associated with the move Grudge.
+ * If this tag is active when the bearer faints from an opponent's move, the tag reduces that move's PP to 0.
+ * Otherwise, it lapses when the bearer makes another move.
+ */
+export class GrudgeTag extends BattlerTag {
+  constructor() {
+    super(BattlerTagType.GRUDGE, [ BattlerTagLapseType.CUSTOM, BattlerTagLapseType.PRE_MOVE ], 1, Moves.GRUDGE);
+  }
+
+  onAdd(pokemon: Pokemon) {
+    super.onAdd(pokemon);
+    pokemon.scene.queueMessage(i18next.t("battlerTags:grudgeOnAdd", { pokemonNameWithAffix: getPokemonNameWithAffix(pokemon) }));
+  }
+
+  /**
+   * Activates Grudge's special effect on the attacking Pokemon and lapses the tag.
+   * @param pokemon
+   * @param lapseType
+   * @param sourcePokemon {@linkcode Pokemon} the source of the move that fainted the tag's bearer
+   * @returns `false` if Grudge activates its effect or lapses
+   */
+  override lapse(pokemon: Pokemon, lapseType: BattlerTagLapseType, sourcePokemon?: Pokemon): boolean {
+    if (lapseType === BattlerTagLapseType.CUSTOM && sourcePokemon) {
+      if (sourcePokemon.isActive() && pokemon.isOpponent(sourcePokemon)) {
+        const lastMove = pokemon.turnData.attacksReceived[0];
+        const lastMoveData = sourcePokemon.getMoveset().find(m => m?.moveId === lastMove.move);
+        if (lastMoveData && lastMove.move !== Moves.STRUGGLE) {
+          lastMoveData.ppUsed = lastMoveData.getMovePp();
+          pokemon.scene.queueMessage(i18next.t("battlerTags:grudgeLapse", { pokemonNameWithAffix: getPokemonNameWithAffix(pokemon), moveName: lastMoveData.getName() }));
+        }
+      }
+      return false;
+    } else {
+      return super.lapse(pokemon, lapseType);
+    }
+  }
+}
+
 /**
  * Retrieves a {@linkcode BattlerTag} based on the provided tag type, turn count, source move, and source ID.
  * @param sourceId - The ID of the pokemon adding the tag
@@ -2932,6 +3002,8 @@ export function getBattlerTag(tagType: BattlerTagType, turnCount: number, source
       return new IceFaceBlockDamageTag(tagType);
     case BattlerTagType.DISGUISE:
       return new FormBlockDamageTag(tagType);
+    case BattlerTagType.COMMANDED:
+      return new CommandedTag(sourceId);
     case BattlerTagType.STOCKPILING:
       return new StockpilingTag(sourceMove);
     case BattlerTagType.OCTOLOCK:
@@ -2975,6 +3047,8 @@ export function getBattlerTag(tagType: BattlerTagType, turnCount: number, source
       return new TelekinesisTag(sourceMove);
     case BattlerTagType.POWER_TRICK:
       return new PowerTrickTag(sourceMove, sourceId);
+    case BattlerTagType.GRUDGE:
+      return new GrudgeTag();
     case BattlerTagType.NONE:
     default:
       return new BattlerTag(tagType, BattlerTagLapseType.CUSTOM, turnCount, sourceMove, sourceId);

src/data/move.ts

@@ -1,5 +1,5 @@
 import { ChargeAnim, initMoveAnim, loadMoveAnimAssets, MoveChargeAnim } from "./battle-anims";
-import { EncoreTag, GulpMissileTag, HelpingHandTag, SemiInvulnerableTag, ShellTrapTag, StockpilingTag, SubstituteTag, TrappedTag, TypeBoostTag } from "./battler-tags";
+import { CommandedTag, EncoreTag, GulpMissileTag, HelpingHandTag, SemiInvulnerableTag, ShellTrapTag, StockpilingTag, SubstituteTag, TrappedTag, TypeBoostTag } from "./battler-tags";
 import { getPokemonNameWithAffix } from "../messages";
 import Pokemon, { AttackMoveResult, EnemyPokemon, HitResult, MoveResult, PlayerPokemon, PokemonMove, TurnMove } from "../field/pokemon";
 import { getNonVolatileStatusEffects, getStatusEffectHealText, isNonVolatileStatusEffect, StatusEffect } from "./status-effect";
@@ -714,6 +714,10 @@ export default class Move implements Localizable {
   getTargetBenefitScore(user: Pokemon, target: Pokemon, move: Move): integer {
     let score = 0;
 
+    if (target.getAlly()?.getTag(BattlerTagType.COMMANDED)?.getSourcePokemon(target.scene) === target) {
+      return 20 * (target.isPlayer() === user.isPlayer() ? -1 : 1); // always -20 with how the AI handles this score
+    }
+
     for (const attr of this.attrs) {
       // conditionals to check if the move is self targeting (if so then you are applying the move to yourself, not the target)
       score += attr.getTargetBenefitScore(user, !attr.selfTarget ? target : user, move) * (target !== user && attr.selfTarget ? -1 : 1);
@@ -3245,6 +3249,41 @@ export class CutHpStatStageBoostAttr extends StatStageChangeAttr {
   }
 }
 
+/**
+ * Attribute implementing the stat boosting effect of {@link https://bulbapedia.bulbagarden.net/wiki/Order_Up_(move) | Order Up}.
+ * If the user has a Pokemon with {@link https://bulbapedia.bulbagarden.net/wiki/Commander_(Ability) | Commander} in their mouth,
+ * one of the user's stats are increased by 1 stage, depending on the "commanding" Pokemon's form. This effect does not respect
+ * effect chance, but Order Up itself may be boosted by Sheer Force.
+ */
+export class OrderUpStatBoostAttr extends MoveEffectAttr {
+  constructor() {
+    super(true, { trigger: MoveEffectTrigger.HIT });
+  }
+
+  override apply(user: Pokemon, target: Pokemon, move: Move, args?: any[]): boolean {
+    const commandedTag = user.getTag(CommandedTag);
+    if (!commandedTag) {
+      return false;
+    }
+
+    let increasedStat: EffectiveStat = Stat.ATK;
+    switch (commandedTag.tatsugiriFormKey) {
+      case "curly":
+        increasedStat = Stat.ATK;
+        break;
+      case "droopy":
+        increasedStat = Stat.DEF;
+        break;
+      case "stretchy":
+        increasedStat = Stat.SPD;
+        break;
+    }
+
+    user.scene.unshiftPhase(new StatStageChangePhase(user.scene, user.getBattlerIndex(), this.selfTarget, [ increasedStat ], 1));
+    return true;
+  }
+}
+
 export class CopyStatsAttr extends MoveEffectAttr {
   apply(user: Pokemon, target: Pokemon, move: Move, args: any[]): boolean {
     if (!super.apply(user, target, move, args)) {
@@ -5852,7 +5891,13 @@ export class ForceSwitchOutAttr extends MoveEffectAttr {
       return false;
     }
 
+    /** The {@linkcode Pokemon} to be switched out with this effect */
     const switchOutTarget = this.selfSwitch ? user : target;
+
+    // If the switch-out target is a Dondozo with a Tatsugiri in its mouth
+    // (e.g. when it uses Flip Turn), make it spit out the Tatsugiri before switching out.
+    switchOutTarget.lapseTag(BattlerTagType.COMMANDED);
+
     if (switchOutTarget instanceof PlayerPokemon) {
       /**
       * Check if Wimp Out/Emergency Exit activates due to being hit by U-turn or Volt Switch
@@ -5955,6 +6000,12 @@ export class ForceSwitchOutAttr extends MoveEffectAttr {
           return false;
         }
 
+        // Dondozo with an allied Tatsugiri in its mouth cannot be forced out
+        const commandedTag = switchOutTarget.getTag(BattlerTagType.COMMANDED);
+        if (commandedTag?.getSourcePokemon(switchOutTarget.scene)?.isActive(true)) {
+          return false;
+        }
+
         if (!player && user.scene.currentBattle.isBattleMysteryEncounter() && !user.scene.currentBattle.mysteryEncounter?.fleeAllowed) {
           // Don't allow wild opponents to be force switched during MEs with flee disabled
           return false;
@@ -8440,7 +8491,7 @@ export function initMoves() {
       .attr(HealStatusEffectAttr, true, StatusEffect.PARALYSIS, StatusEffect.POISON, StatusEffect.TOXIC, StatusEffect.BURN)
       .condition((user, target, move) => !!user.status && (user.status.effect === StatusEffect.PARALYSIS || user.status.effect === StatusEffect.POISON || user.status.effect === StatusEffect.TOXIC || user.status.effect === StatusEffect.BURN)),
     new SelfStatusMove(Moves.GRUDGE, Type.GHOST, -1, 5, -1, 0, 3)
-      .unimplemented(),
+      .attr(AddBattlerTagAttr, BattlerTagType.GRUDGE, true, undefined, 1),
     new SelfStatusMove(Moves.SNATCH, Type.DARK, -1, 10, -1, 4, 3)
       .unimplemented(),
     new AttackMove(Moves.SECRET_POWER, Type.NORMAL, MoveCategory.PHYSICAL, 70, 100, 20, 30, 0, 3)
@@ -10302,8 +10353,8 @@ export function initMoves() {
     new AttackMove(Moves.LUMINA_CRASH, Type.PSYCHIC, MoveCategory.SPECIAL, 80, 100, 10, 100, 0, 9)
       .attr(StatStageChangeAttr, [ Stat.SPDEF ], -2),
     new AttackMove(Moves.ORDER_UP, Type.DRAGON, MoveCategory.PHYSICAL, 80, 100, 10, 100, 0, 9)
-      .makesContact(false)
+      .attr(OrderUpStatBoostAttr)
-      .partial(), // No effect implemented (requires Commander)
+      .makesContact(false),
     new AttackMove(Moves.JET_PUNCH, Type.WATER, MoveCategory.PHYSICAL, 60, 100, 15, -1, 1, 9)
       .punchingMove(),
     new StatusMove(Moves.SPICY_EXTRACT, Type.GRASS, -1, 15, -1, 0, 9)

src/data/mystery-encounters/encounters/global-trade-system-encounter.ts

@@ -367,10 +367,11 @@ export const GlobalTradeSystemEncounter: MysteryEncounter =
         })
         .withOptionPhase(async (scene: BattleScene) => {
           const encounter = scene.currentBattle.mysteryEncounter!;
-          const modifier = encounter.misc.chosenModifier;
+          const modifier = encounter.misc.chosenModifier as PokemonHeldItemModifier;
+          const party = scene.getPlayerParty();
 
           // Check tier of the traded item, the received item will be one tier up
-          const type = modifier.type.withTierFromPool();
+          const type = modifier.type.withTierFromPool(ModifierPoolType.PLAYER, party);
           let tier = type.tier ?? ModifierTier.GREAT;
           // Eggs and White Herb are not in the pool
           if (type.id === "WHITE_HERB") {
@@ -385,11 +386,11 @@ export const GlobalTradeSystemEncounter: MysteryEncounter =
             tier++;
           }
 
-          regenerateModifierPoolThresholds(scene.getPlayerParty(), ModifierPoolType.PLAYER, 0);
+          regenerateModifierPoolThresholds(party, ModifierPoolType.PLAYER, 0);
           let item: ModifierTypeOption | null = null;
           // TMs excluded from possible rewards
           while (!item || item.type.id.includes("TM_")) {
-            item = getPlayerModifierTypeOptions(1, scene.getPlayerParty(), [], { guaranteedModifierTiers: [ tier ], allowLuckUpgrades: false })[0];
+            item = getPlayerModifierTypeOptions(1, party, [], { guaranteedModifierTiers: [ tier ], allowLuckUpgrades: false })[0];
           }
 
           encounter.setDialogueToken("itemName", item.type.name);

src/data/mystery-encounters/encounters/the-winstrate-challenge-encounter.ts

@@ -23,6 +23,7 @@ import { ReturnPhase } from "#app/phases/return-phase";
 import i18next from "i18next";
 import { ModifierTier } from "#app/modifier/modifier-tier";
 import { CLASSIC_MODE_MYSTERY_ENCOUNTER_WAVES } from "#app/game-mode";
+import { BattlerTagType } from "#enums/battler-tag-type";
 
 /** the i18n namespace for the encounter */
 const namespace = "mysteryEncounters/theWinstrateChallenge";
@@ -187,6 +188,7 @@ function endTrainerBattleAndShowDialogue(scene: BattleScene): Promise<void> {
     } else {
       scene.arena.resetArenaEffects();
       const playerField = scene.getPlayerField();
+      playerField.forEach((pokemon) => pokemon.lapseTag(BattlerTagType.COMMANDED));
       playerField.forEach((_, p) => scene.unshiftPhase(new ReturnPhase(scene, p)));
 
       for (const pokemon of scene.getPlayerParty()) {

src/enums/battler-tag-type.ts

@@ -88,5 +88,7 @@ export enum BattlerTagType {
   IMPRISON = "IMPRISON",
   SYRUP_BOMB = "SYRUP_BOMB",
   ELECTRIFIED = "ELECTRIFIED",
-  TELEKINESIS = "TELEKINESIS"
+  TELEKINESIS = "TELEKINESIS",
+  COMMANDED = "COMMANDED",
+  GRUDGE = "GRUDGE"
 }

src/enums/pokemon-anim-type.ts

@@ -12,5 +12,15 @@ export enum PokemonAnimType {
    * Removes a Pokemon's Substitute doll from the field.
    * The Pokemon then moves back to its original position.
    */
-  SUBSTITUTE_REMOVE
+  SUBSTITUTE_REMOVE,
+  /**
+   * Brings Tatsugiri and Dondozo to the center of the field, with
+   * Tatsugiri jumping into the Dondozo's mouth
+   */
+  COMMANDER_APPLY,
+  /**
+   * Dondozo "spits out" Tatsugiri, moving Tatsugiri back to its original
+   * field position.
+   */
+  COMMANDER_REMOVE
 }

src/field/pokemon.ts

@@ -7,7 +7,7 @@ import Move, { HighCritAttr, HitsTagAttr, applyMoveAttrs, FixedDamageAttr, Varia
 import { default as PokemonSpecies, PokemonSpeciesForm, getFusedSpeciesName, getPokemonSpecies, getPokemonSpeciesForm } from "#app/data/pokemon-species";
 import { CLASSIC_CANDY_FRIENDSHIP_MULTIPLIER, getStarterValueFriendshipCap, speciesStarterCosts } from "#app/data/balance/starters";
 import { starterPassiveAbilities } from "#app/data/balance/passives";
-import { Constructor, isNullOrUndefined, randSeedInt } from "#app/utils";
+import { Constructor, isNullOrUndefined, randSeedInt, type nil } from "#app/utils";
 import * as Utils from "#app/utils";
 import { Type, TypeDamageMultiplier, getTypeDamageMultiplier, getTypeRgb } from "#app/data/type";
 import { getLevelTotalExp } from "#app/data/exp";
@@ -1738,6 +1738,11 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
    * @returns `true` if the pokemon is trapped
    */
   public isTrapped(trappedAbMessages: string[] = [], simulated: boolean = true): boolean {
+    const commandedTag = this.getTag(BattlerTagType.COMMANDED);
+    if (commandedTag?.getSourcePokemon(this.scene)?.isActive(true)) {
+      return true;
+    }
+
     if (this.isOfType(Type.GHOST)) {
       return false;
     }
@@ -3014,6 +3019,7 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
 
       // In case of fatal damage, this tag would have gotten cleared before we could lapse it.
       const destinyTag = this.getTag(BattlerTagType.DESTINY_BOND);
+      const grudgeTag = this.getTag(BattlerTagType.GRUDGE);
 
       const isOneHitKo = result === HitResult.ONE_HIT_KO;
 
@@ -3085,13 +3091,10 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
       if (this.isFainted()) {
         // set splice index here, so future scene queues happen before FaintedPhase
         this.scene.setPhaseQueueSplice();
-        if (!isNullOrUndefined(destinyTag) && dmg) {
+        this.scene.unshiftPhase(new FaintPhase(this.scene, this.getBattlerIndex(), isOneHitKo, destinyTag, grudgeTag, source));
-          // Destiny Bond will activate during FaintPhase
+
-          this.scene.unshiftPhase(new FaintPhase(this.scene, this.getBattlerIndex(), isOneHitKo, destinyTag, source));
-        } else {
-          this.scene.unshiftPhase(new FaintPhase(this.scene, this.getBattlerIndex(), isOneHitKo));
-        }
         this.destroySubstitute();
+        this.lapseTag(BattlerTagType.COMMANDED);
         this.resetSummonData();
       }
 
@@ -3140,6 +3143,7 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
       this.scene.setPhaseQueueSplice();
       this.scene.unshiftPhase(new FaintPhase(this.scene, this.getBattlerIndex(), preventEndure));
       this.destroySubstitute();
+      this.lapseTag(BattlerTagType.COMMANDED);
       this.resetSummonData();
     }
     return damage;
@@ -3222,19 +3226,19 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
   }
 
   /** @overload */
-  getTag(tagType: BattlerTagType): BattlerTag | null;
+  getTag(tagType: BattlerTagType): BattlerTag | nil;
 
   /** @overload */
-  getTag<T extends BattlerTag>(tagType: Constructor<T>): T | null;
+  getTag<T extends BattlerTag>(tagType: Constructor<T>): T | nil;
 
-  getTag(tagType: BattlerTagType | Constructor<BattlerTag>): BattlerTag | null {
+  getTag(tagType: BattlerTagType | Constructor<BattlerTag>): BattlerTag | nil {
     if (!this.summonData) {
       return null;
     }
     return (tagType instanceof Function
       ? this.summonData.tags.find(t => t instanceof tagType)
       : this.summonData.tags.find(t => t.tagType === tagType)
-    )!; // TODO: is this bang correct?
+    );
   }
 
   findTag(tagFilter: ((tag: BattlerTag) => boolean)) {

src/modifier/modifier.ts

@@ -31,6 +31,7 @@ import i18next from "i18next";
 import { type DoubleBattleChanceBoosterModifierType, type EvolutionItemModifierType, type FormChangeItemModifierType, type ModifierOverride, type ModifierType, type PokemonBaseStatTotalModifierType, type PokemonExpBoosterModifierType, type PokemonFriendshipBoosterModifierType, type PokemonMoveAccuracyBoosterModifierType, type PokemonMultiHitModifierType, type TerastallizeModifierType, type TmModifierType, getModifierType, ModifierPoolType, ModifierTypeGenerator, modifierTypes, PokemonHeldItemModifierType } from "./modifier-type";
 import { Color, ShadowColor } from "#enums/color";
 import { FRIENDSHIP_GAIN_FROM_RARE_CANDY } from "#app/data/balance/starters";
+import { applyAbAttrs, CommanderAbAttr } from "#app/data/ability";
 
 export type ModifierPredicate = (modifier: Modifier) => boolean;
 
@@ -1937,10 +1938,16 @@ export class PokemonInstantReviveModifier extends PokemonHeldItemModifier {
    * @returns always `true`
    */
   override apply(pokemon: Pokemon): boolean {
+    // Restore the Pokemon to half HP
     pokemon.scene.unshiftPhase(new PokemonHealPhase(pokemon.scene, pokemon.getBattlerIndex(),
       toDmgValue(pokemon.getMaxHp() / 2), i18next.t("modifier:pokemonInstantReviveApply", { pokemonNameWithAffix: getPokemonNameWithAffix(pokemon), typeName: this.type.name }), false, false, true));
 
+    // Remove the Pokemon's FAINT status
     pokemon.resetStatus(true, false, true);
+
+    // Reapply Commander on the Pokemon's side of the field, if applicable
+    const field = pokemon.isPlayer() ? pokemon.scene.getPlayerField() : pokemon.scene.getEnemyField();
+    field.forEach((p) => applyAbAttrs(CommanderAbAttr, p, null, false));
     return true;
   }
 

src/phases/command-phase.ts

@@ -54,6 +54,11 @@ export class CommandPhase extends FieldPhase {
       }
     }
 
+    // If the Pokemon has applied Commander's effects to its ally, skip this command
+    if (this.scene.currentBattle?.double && this.getPokemon().getAlly()?.getTag(BattlerTagType.COMMANDED)?.getSourcePokemon(this.scene) === this.getPokemon()) {
+      this.scene.currentBattle.turnCommands[this.fieldIndex] = { command: Command.FIGHT, move: { move: Moves.NONE, targets: []}, skip: true };
+    }
+
     if (this.scene.currentBattle.turnCommands[this.fieldIndex]?.skip) {
       return this.end();
     }
@@ -92,7 +97,7 @@ export class CommandPhase extends FieldPhase {
 
   handleCommand(command: Command, cursor: integer, ...args: any[]): boolean {
     const playerPokemon = this.scene.getPlayerField()[this.fieldIndex];
-    let success: boolean;
+    let success: boolean = false;
 
     switch (command) {
       case Command.FIGHT:
@@ -232,11 +237,8 @@ export class CommandPhase extends FieldPhase {
             const trapTag = playerPokemon.getTag(TrappedTag);
             const fairyLockTag = playerPokemon.scene.arena.getTagOnSide(ArenaTagType.FAIRY_LOCK, ArenaTagSide.PLAYER);
 
-            // trapTag should be defined at this point, but just in case...
             if (!trapTag && !fairyLockTag) {
-              currentBattle.turnCommands[this.fieldIndex] = isSwitch
+              i18next.t(`battle:noEscape${isSwitch ? "Switch" : "Flee"}`);
-                ? { command: Command.POKEMON, cursor: cursor, args: args }
-                : { command: Command.RUN };
               break;
             }
             if (!isSwitch) {
@@ -272,11 +274,11 @@ export class CommandPhase extends FieldPhase {
         break;
     }
 
-    if (success!) { // TODO: is the bang correct?
+    if (success) {
       this.end();
     }
 
-    return success!; // TODO: is the bang correct?
+    return success;
   }
 
   cancel() {

src/phases/encounter-phase.ts

@@ -36,6 +36,7 @@ import { PlayerGender } from "#enums/player-gender";
 import { Species } from "#enums/species";
 import i18next from "i18next";
 import { WEIGHT_INCREMENT_ON_SPAWN_MISS } from "#app/data/mystery-encounters/mystery-encounters";
+import { BattlerTagType } from "#enums/battler-tag-type";
 
 export class EncounterPhase extends BattlePhase {
   private loaded: boolean;
@@ -483,6 +484,7 @@ export class EncounterPhase extends BattlePhase {
         }
       } else {
         if (availablePartyMembers.length > 1 && availablePartyMembers[1].isOnField()) {
+          this.scene.getPlayerField().forEach((pokemon) => pokemon.lapseTag(BattlerTagType.COMMANDED));
           this.scene.pushPhase(new ReturnPhase(this.scene, 1));
         }
         this.scene.pushPhase(new ToggleDoublePositionPhase(this.scene, false));

src/phases/enemy-command-phase.ts

@@ -2,6 +2,8 @@ import BattleScene from "#app/battle-scene";
 import { BattlerIndex } from "#app/battle";
 import { Command } from "#app/ui/command-ui-handler";
 import { FieldPhase } from "./field-phase";
+import { Abilities } from "#enums/abilities";
+import { BattlerTagType } from "#enums/battler-tag-type";
 
 /**
  * Phase for determining an enemy AI's action for the next turn.
@@ -34,6 +36,11 @@ export class EnemyCommandPhase extends FieldPhase {
 
     const trainer = battle.trainer;
 
+    if (battle.double && enemyPokemon.hasAbility(Abilities.COMMANDER)
+        && enemyPokemon.getAlly().getTag(BattlerTagType.COMMANDED)) {
+      this.skipTurn = true;
+    }
+
     /**
        * If the enemy has a trainer, decide whether or not the enemy should switch
        * to another member in its party.

src/phases/evolution-phase.ts

@@ -39,8 +39,6 @@ export class EvolutionPhase extends Phase {
     this.pokemon = pokemon;
     this.evolution = evolution;
     this.lastLevel = lastLevel;
-    this.evolutionBgm = this.scene.playSoundWithoutBgm("evolution");
-    this.preEvolvedPokemonName = getPokemonNameWithAffix(this.pokemon);
   }
 
   validate(): boolean {
@@ -62,9 +60,9 @@ export class EvolutionPhase extends Phase {
 
       this.scene.fadeOutBgm(undefined, false);
 
-      const evolutionHandler = this.scene.ui.getHandler() as EvolutionSceneHandler;
+      this.evolutionHandler = this.scene.ui.getHandler() as EvolutionSceneHandler;
 
-      this.evolutionContainer = evolutionHandler.evolutionContainer;
+      this.evolutionContainer = this.evolutionHandler.evolutionContainer;
 
       this.evolutionBaseBg = this.scene.add.image(0, 0, "default_bg");
       this.evolutionBaseBg.setOrigin(0, 0);
@@ -117,14 +115,12 @@ export class EvolutionPhase extends Phase {
           sprite.pipelineData[k] = this.pokemon.getSprite().pipelineData[k];
         });
       });
-
+      this.preEvolvedPokemonName = getPokemonNameWithAffix(this.pokemon);
       this.doEvolution();
     });
   }
 
   doEvolution(): void {
-    this.evolutionHandler = this.scene.ui.getHandler() as EvolutionSceneHandler;
-
     this.scene.ui.showText(i18next.t("menu:evolving", { pokemonName: this.preEvolvedPokemonName }), null, () => {
       this.pokemon.cry();
 
@@ -145,6 +141,7 @@ export class EvolutionPhase extends Phase {
         });
 
         this.scene.time.delayedCall(1000, () => {
+          this.evolutionBgm = this.scene.playSoundWithoutBgm("evolution");
           this.scene.tweens.add({
             targets: this.evolutionBgOverlay,
             alpha: 1,

src/phases/faint-phase.ts

@@ -1,7 +1,7 @@
 import { BattlerIndex, BattleType } from "#app/battle";
 import BattleScene from "#app/battle-scene";
 import { applyPostFaintAbAttrs, applyPostKnockOutAbAttrs, applyPostVictoryAbAttrs, PostFaintAbAttr, PostKnockOutAbAttr, PostVictoryAbAttr } from "#app/data/ability";
-import { BattlerTagLapseType, DestinyBondTag } from "#app/data/battler-tags";
+import { BattlerTagLapseType, DestinyBondTag, GrudgeTag } from "#app/data/battler-tags";
 import { battleSpecDialogue } from "#app/data/dialogue";
 import { allMoves, PostVictoryStatStageChangeAttr } from "#app/data/move";
 import { SpeciesFormChangeActiveTrigger } from "#app/data/pokemon-forms";
@@ -31,18 +31,24 @@ export class FaintPhase extends PokemonPhase {
   /**
    * Destiny Bond tag belonging to the currently fainting Pokemon, if applicable
    */
-  private destinyTag?: DestinyBondTag;
+  private destinyTag?: DestinyBondTag | null;
 
   /**
-   * The source Pokemon that dealt fatal damage and should get KO'd by Destiny Bond, if applicable
+   * Grudge tag belonging to the currently fainting Pokemon, if applicable
+   */
+  private grudgeTag?: GrudgeTag | null;
+
+  /**
+   * The source Pokemon that dealt fatal damage
    */
   private source?: Pokemon;
 
-  constructor(scene: BattleScene, battlerIndex: BattlerIndex, preventEndure: boolean = false, destinyTag?: DestinyBondTag, source?: Pokemon) {
+  constructor(scene: BattleScene, battlerIndex: BattlerIndex, preventEndure: boolean = false, destinyTag?: DestinyBondTag | null, grudgeTag?: GrudgeTag | null, source?: Pokemon) {
     super(scene, battlerIndex);
 
     this.preventEndure = preventEndure;
     this.destinyTag = destinyTag;
+    this.grudgeTag = grudgeTag;
     this.source = source;
   }
 
@@ -53,6 +59,10 @@ export class FaintPhase extends PokemonPhase {
       this.destinyTag.lapse(this.source, BattlerTagLapseType.CUSTOM);
     }
 
+    if (!isNullOrUndefined(this.grudgeTag) && !isNullOrUndefined(this.source)) {
+      this.grudgeTag.lapse(this.getPokemon(), BattlerTagLapseType.CUSTOM, this.source);
+    }
+
     if (!this.preventEndure) {
       const instantReviveModifier = this.scene.applyModifier(PokemonInstantReviveModifier, this.player, this.getPokemon()) as PokemonInstantReviveModifier;
 

src/phases/move-effect-phase.ts

@@ -211,11 +211,14 @@ export class MoveEffectPhase extends PokemonPhase {
             && (target.getAbility()?.getAttrs(TypeImmunityAbAttr)?.[0]?.getImmuneType() === user.getMoveType(move))
             && !target.getTag(SemiInvulnerableTag);
 
+          /** Is the target hidden by the effects of its Commander ability? */
+          const isCommanding = this.scene.currentBattle.double && target.getAlly()?.getTag(BattlerTagType.COMMANDED)?.getSourcePokemon(this.scene) === target;
+
           /**
            * If the move missed a target, stop all future hits against that target
            * and move on to the next target (if there is one).
            */
-          if (!isImmune && !isProtected && !targetHitChecks[target.getBattlerIndex()]) {
+          if (isCommanding || (!isImmune && !isProtected && !targetHitChecks[target.getBattlerIndex()])) {
             this.stopMultiHit(target);
             this.scene.queueMessage(i18next.t("battle:attackMissed", { pokemonNameWithAffix: getPokemonNameWithAffix(target) }));
             if (moveHistoryEntry.result === MoveResult.PENDING) {

src/phases/mystery-encounter-phases.ts

@@ -417,6 +417,7 @@ export class MysteryEncounterBattlePhase extends Phase {
       }
     } else {
       if (availablePartyMembers.length > 1 && availablePartyMembers[1].isOnField()) {
+        scene.getPlayerField().forEach((pokemon) => pokemon.lapseTag(BattlerTagType.COMMANDED));
         scene.pushPhase(new ReturnPhase(scene, 1));
       }
       scene.pushPhase(new ToggleDoublePositionPhase(scene, false));

src/phases/pokemon-anim-phase.ts

@@ -1,8 +1,10 @@
 import BattleScene from "#app/battle-scene";
 import { SubstituteTag } from "#app/data/battler-tags";
-import { PokemonAnimType } from "#enums/pokemon-anim-type";
 import Pokemon from "#app/field/pokemon";
 import { BattlePhase } from "#app/phases/battle-phase";
+import { isNullOrUndefined } from "#app/utils";
+import { PokemonAnimType } from "#enums/pokemon-anim-type";
+import { Species } from "#enums/species";
 
 
 export class PokemonAnimPhase extends BattlePhase {
@@ -37,14 +39,20 @@ export class PokemonAnimPhase extends BattlePhase {
       case PokemonAnimType.SUBSTITUTE_REMOVE:
         this.doSubstituteRemoveAnim();
         break;
+      case PokemonAnimType.COMMANDER_APPLY:
+        this.doCommanderApplyAnim();
+        break;
+      case PokemonAnimType.COMMANDER_REMOVE:
+        this.doCommanderRemoveAnim();
+        break;
       default:
         this.end();
     }
   }
 
-  doSubstituteAddAnim(): void {
+  private doSubstituteAddAnim(): void {
     const substitute = this.pokemon.getTag(SubstituteTag);
-    if (substitute === null) {
+    if (isNullOrUndefined(substitute)) {
       return this.end();
     }
 
@@ -106,7 +114,7 @@ export class PokemonAnimPhase extends BattlePhase {
     });
   }
 
-  doSubstitutePreMoveAnim(): void {
+  private doSubstitutePreMoveAnim(): void {
     if (this.fieldAssets.length !== 1) {
       return this.end();
     }
@@ -135,7 +143,7 @@ export class PokemonAnimPhase extends BattlePhase {
     });
   }
 
-  doSubstitutePostMoveAnim(): void {
+  private doSubstitutePostMoveAnim(): void {
     if (this.fieldAssets.length !== 1) {
       return this.end();
     }
@@ -164,7 +172,7 @@ export class PokemonAnimPhase extends BattlePhase {
     });
   }
 
-  doSubstituteRemoveAnim(): void {
+  private doSubstituteRemoveAnim(): void {
     if (this.fieldAssets.length !== 1) {
       return this.end();
     }
@@ -233,4 +241,121 @@ export class PokemonAnimPhase extends BattlePhase {
       }
     });
   }
+
+  private doCommanderApplyAnim(): void {
+    if (!this.scene.currentBattle?.double) {
+      return this.end();
+    }
+    const dondozo = this.pokemon.getAlly();
+
+    if (dondozo?.species?.speciesId !== Species.DONDOZO) {
+      return this.end();
+    }
+
+    const tatsugiriX = this.pokemon.x + this.pokemon.getSprite().x;
+    const tatsugiriY = this.pokemon.y + this.pokemon.getSprite().y;
+
+    const getSourceSprite = () => {
+      const sprite = this.scene.addPokemonSprite(this.pokemon, tatsugiriX, tatsugiriY, this.pokemon.getSprite().texture, this.pokemon.getSprite()!.frame.name, true);
+      [ "spriteColors", "fusionSpriteColors" ].map(k => sprite.pipelineData[k] = this.pokemon.getSprite().pipelineData[k]);
+      sprite.setPipelineData("spriteKey", this.pokemon.getBattleSpriteKey());
+      sprite.setPipelineData("shiny", this.pokemon.shiny);
+      sprite.setPipelineData("variant", this.pokemon.variant);
+      sprite.setPipelineData("ignoreFieldPos", true);
+      sprite.setOrigin(0.5, 1);
+      this.pokemon.getSprite().on("animationupdate", (_anim, frame) => sprite.setFrame(frame.textureFrame));
+      this.scene.field.add(sprite);
+      return sprite;
+    };
+
+    const sourceSprite = getSourceSprite();
+
+    this.pokemon.setVisible(false);
+
+    const sourceFpOffset = this.pokemon.getFieldPositionOffset();
+    const dondozoFpOffset = dondozo.getFieldPositionOffset();
+
+    this.scene.playSound("se/pb_throw");
+
+    this.scene.tweens.add({
+      targets: sourceSprite,
+      duration: 375,
+      scale: 0.5,
+      x: { value: tatsugiriX + (dondozoFpOffset[0] - sourceFpOffset[0]) / 2, ease: "Linear" },
+      y: { value: (this.pokemon.isPlayer() ? 100 : 65) + sourceFpOffset[1], ease: "Sine.easeOut" },
+      onComplete: () => {
+        this.scene.field.bringToTop(dondozo);
+        this.scene.tweens.add({
+          targets: sourceSprite,
+          duration: 375,
+          scale: 0.01,
+          x: { value: dondozo.x, ease: "Linear" },
+          y: { value: dondozo.y + dondozo.height / 2, ease: "Sine.easeIn" },
+          onComplete: () => {
+            sourceSprite.destroy();
+            this.scene.playSound("battle_anims/PRSFX- Liquidation1.wav");
+            this.scene.tweens.add({
+              targets: dondozo,
+              duration: 250,
+              ease: "Sine.easeInOut",
+              scale: 0.85,
+              yoyo: true,
+              onComplete: () => this.end()
+            });
+          }
+        });
+      }
+    });
+  }
+
+  private doCommanderRemoveAnim(): void {
+    // Note: unlike the other Commander animation, this is played through the
+    // Dondozo instead of the Tatsugiri.
+    const tatsugiri = this.pokemon.getAlly();
+
+    const tatsuSprite = this.scene.addPokemonSprite(
+      tatsugiri,
+      this.pokemon.x + this.pokemon.getSprite().x,
+      this.pokemon.y + this.pokemon.getSprite().y + this.pokemon.height / 2,
+      tatsugiri.getSprite().texture,
+      tatsugiri.getSprite()!.frame.name,
+      true
+    );
+    [ "spriteColors", "fusionSpriteColors" ].map(k => tatsuSprite.pipelineData[k] = tatsugiri.getSprite().pipelineData[k]);
+    tatsuSprite.setPipelineData("spriteKey", tatsugiri.getBattleSpriteKey());
+    tatsuSprite.setPipelineData("shiny", tatsugiri.shiny);
+    tatsuSprite.setPipelineData("variant", tatsugiri.variant);
+    tatsuSprite.setPipelineData("ignoreFieldPos", true);
+    this.pokemon.getSprite().on("animationupdate", (_anim, frame) => tatsuSprite.setFrame(frame.textureFrame));
+
+    tatsuSprite.setOrigin(0.5, 1);
+    tatsuSprite.setScale(0.01);
+
+    this.scene.field.add(tatsuSprite);
+    this.scene.field.bringToTop(this.pokemon);
+    tatsuSprite.setVisible(true);
+
+    this.scene.tweens.add({
+      targets: this.pokemon,
+      duration: 250,
+      ease: "Sine.easeInOut",
+      scale: 1.15,
+      yoyo: true,
+      onComplete: () => {
+        this.scene.playSound("battle_anims/PRSFX- Liquidation4.wav");
+        this.scene.tweens.add({
+          targets: tatsuSprite,
+          duration: 500,
+          scale: 1,
+          x: { value: tatsugiri.x + tatsugiri.getSprite().x, ease: "Linear" },
+          y: { value: tatsugiri.y + tatsugiri.getSprite().y, ease: "Sine.easeIn" },
+          onComplete: () => {
+            tatsugiri.setVisible(true);
+            tatsuSprite.destroy();
+            this.end();
+          }
+        });
+      }
+    });
+  }
 }

src/phases/post-summon-phase.ts

@@ -1,6 +1,6 @@
 import BattleScene from "#app/battle-scene";
 import { BattlerIndex } from "#app/battle";
-import { applyPostSummonAbAttrs, PostSummonAbAttr } from "#app/data/ability";
+import { applyAbAttrs, applyPostSummonAbAttrs, CommanderAbAttr, PostSummonAbAttr } from "#app/data/ability";
 import { ArenaTrapTag } from "#app/data/arena-tag";
 import { StatusEffect } from "#app/enums/status-effect";
 import { PokemonPhase } from "./pokemon-phase";
@@ -28,5 +28,8 @@ export class PostSummonPhase extends PokemonPhase {
     }
 
     applyPostSummonAbAttrs(PostSummonAbAttr, pokemon).then(() => this.end());
+
+    const field = pokemon.isPlayer() ? this.scene.getPlayerField() : this.scene.getEnemyField();
+    field.forEach((p) => applyAbAttrs(CommanderAbAttr, p, null, false));
   }
 }

src/test/abilities/commander.test.ts

@@ -0,0 +1,224 @@
+import { BattlerIndex } from "#app/battle";
+import { BattlerTagType } from "#enums/battler-tag-type";
+import { PokemonAnimType } from "#enums/pokemon-anim-type";
+import { EffectiveStat, Stat } from "#enums/stat";
+import { StatusEffect } from "#enums/status-effect";
+import { WeatherType } from "#enums/weather-type";
+import { MoveResult } from "#app/field/pokemon";
+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, vi } from "vitest";
+
+describe("Abilities - Commander", () => {
+  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
+      .startingLevel(100)
+      .enemyLevel(100)
+      .moveset([ Moves.LIQUIDATION, Moves.MEMENTO, Moves.SPLASH, Moves.FLIP_TURN ])
+      .ability(Abilities.COMMANDER)
+      .battleType("double")
+      .disableCrits()
+      .enemySpecies(Species.SNORLAX)
+      .enemyAbility(Abilities.BALL_FETCH)
+      .enemyMoveset(Moves.TACKLE);
+
+    vi.spyOn(game.scene, "triggerPokemonBattleAnim").mockReturnValue(true);
+  });
+
+  it("causes the source to jump into Dondozo's mouth, granting a stat boost and hiding the source", async () => {
+    await game.classicMode.startBattle([ Species.TATSUGIRI, Species.DONDOZO ]);
+
+    const [ tatsugiri, dondozo ] = game.scene.getPlayerField();
+
+    const affectedStats: EffectiveStat[] = [ Stat.ATK, Stat.DEF, Stat.SPATK, Stat.SPDEF, Stat.SPD ];
+
+    expect(game.scene.triggerPokemonBattleAnim).toHaveBeenLastCalledWith(tatsugiri, PokemonAnimType.COMMANDER_APPLY);
+    expect(dondozo.getTag(BattlerTagType.COMMANDED)).toBeDefined();
+    affectedStats.forEach((stat) => expect(dondozo.getStatStage(stat)).toBe(2));
+
+    game.move.select(Moves.SPLASH, 1);
+
+    expect(game.scene.currentBattle.turnCommands[0]?.skip).toBeTruthy();
+
+    // Force both enemies to target the Tatsugiri
+    await game.forceEnemyMove(Moves.TACKLE, BattlerIndex.PLAYER);
+    await game.forceEnemyMove(Moves.TACKLE, BattlerIndex.PLAYER);
+
+    await game.phaseInterceptor.to("BerryPhase", false);
+    game.scene.getEnemyField().forEach(enemy => expect(enemy.getLastXMoves(1)[0].result).toBe(MoveResult.MISS));
+    expect(tatsugiri.isFullHp()).toBeTruthy();
+  });
+
+  it("should activate when a Dondozo switches in and cancel the source's move", async () => {
+    game.override.enemyMoveset(Moves.SPLASH);
+
+    await game.classicMode.startBattle([ Species.TATSUGIRI, Species.MAGIKARP, Species.DONDOZO ]);
+
+    const tatsugiri = game.scene.getPlayerField()[0];
+
+    game.move.select(Moves.LIQUIDATION, 0, BattlerIndex.ENEMY);
+    game.doSwitchPokemon(2);
+
+    await game.phaseInterceptor.to("MovePhase", false);
+    expect(game.scene.triggerPokemonBattleAnim).toHaveBeenCalledWith(tatsugiri, PokemonAnimType.COMMANDER_APPLY);
+
+    const dondozo = game.scene.getPlayerField()[1];
+    expect(dondozo.getTag(BattlerTagType.COMMANDED)).toBeDefined();
+
+    await game.phaseInterceptor.to("BerryPhase", false);
+    expect(tatsugiri.getMoveHistory()).toHaveLength(0);
+    expect(game.scene.getEnemyField()[0].isFullHp()).toBeTruthy();
+  });
+
+  it("source should reenter the field when Dondozo faints", async () => {
+    await game.classicMode.startBattle([ Species.TATSUGIRI, Species.DONDOZO ]);
+
+    const [ tatsugiri, dondozo ] = game.scene.getPlayerField();
+
+    expect(game.scene.triggerPokemonBattleAnim).toHaveBeenLastCalledWith(tatsugiri, PokemonAnimType.COMMANDER_APPLY);
+    expect(dondozo.getTag(BattlerTagType.COMMANDED)).toBeDefined();
+
+    game.move.select(Moves.MEMENTO, 1, BattlerIndex.ENEMY);
+
+    expect(game.scene.currentBattle.turnCommands[0]?.skip).toBeTruthy();
+
+    await game.forceEnemyMove(Moves.TACKLE, BattlerIndex.PLAYER);
+    await game.forceEnemyMove(Moves.TACKLE, BattlerIndex.PLAYER);
+
+    await game.setTurnOrder([ BattlerIndex.PLAYER_2, BattlerIndex.ENEMY, BattlerIndex.ENEMY_2, BattlerIndex.PLAYER ]);
+
+    await game.phaseInterceptor.to("FaintPhase", false);
+    expect(dondozo.getTag(BattlerTagType.COMMANDED)).toBeUndefined();
+    expect(game.scene.triggerPokemonBattleAnim).toHaveBeenLastCalledWith(dondozo, PokemonAnimType.COMMANDER_REMOVE);
+
+    await game.phaseInterceptor.to("BerryPhase", false);
+    expect(tatsugiri.isFullHp()).toBeFalsy();
+  });
+
+  it("source should still take damage from Poison while hidden", async () => {
+    game.override
+      .statusEffect(StatusEffect.POISON)
+      .enemyMoveset(Moves.SPLASH);
+
+    await game.classicMode.startBattle([ Species.TATSUGIRI, Species.DONDOZO ]);
+
+    const [ tatsugiri, dondozo ] = game.scene.getPlayerField();
+
+    expect(game.scene.triggerPokemonBattleAnim).toHaveBeenLastCalledWith(tatsugiri, PokemonAnimType.COMMANDER_APPLY);
+    expect(dondozo.getTag(BattlerTagType.COMMANDED)).toBeDefined();
+
+    game.move.select(Moves.SPLASH, 1);
+
+    expect(game.scene.currentBattle.turnCommands[0]?.skip).toBeTruthy();
+
+    await game.phaseInterceptor.to("TurnEndPhase");
+    expect(tatsugiri.isFullHp()).toBeFalsy();
+  });
+
+  it("source should still take damage from Salt Cure while hidden", async () => {
+    game.override.enemyMoveset(Moves.SPLASH);
+
+    await game.classicMode.startBattle([ Species.TATSUGIRI, Species.DONDOZO ]);
+
+    const [ tatsugiri, dondozo ] = game.scene.getPlayerField();
+
+    expect(game.scene.triggerPokemonBattleAnim).toHaveBeenLastCalledWith(tatsugiri, PokemonAnimType.COMMANDER_APPLY);
+    expect(dondozo.getTag(BattlerTagType.COMMANDED)).toBeDefined();
+
+    tatsugiri.addTag(BattlerTagType.SALT_CURED, 0, Moves.NONE, game.scene.getField()[BattlerIndex.ENEMY].id);
+
+    game.move.select(Moves.SPLASH, 1);
+
+    expect(game.scene.currentBattle.turnCommands[0]?.skip).toBeTruthy();
+
+    await game.phaseInterceptor.to("TurnEndPhase");
+    expect(tatsugiri.isFullHp()).toBeFalsy();
+  });
+
+  it("source should still take damage from Sandstorm while hidden", async () => {
+    game.override
+      .weather(WeatherType.SANDSTORM)
+      .enemyMoveset(Moves.SPLASH);
+
+    await game.classicMode.startBattle([ Species.TATSUGIRI, Species.DONDOZO ]);
+
+    const [ tatsugiri, dondozo ] = game.scene.getPlayerField();
+
+    expect(game.scene.triggerPokemonBattleAnim).toHaveBeenLastCalledWith(tatsugiri, PokemonAnimType.COMMANDER_APPLY);
+    expect(dondozo.getTag(BattlerTagType.COMMANDED)).toBeDefined();
+
+    game.move.select(Moves.SPLASH, 1);
+
+    expect(game.scene.currentBattle.turnCommands[0]?.skip).toBeTruthy();
+
+    await game.phaseInterceptor.to("TurnEndPhase");
+    expect(tatsugiri.isFullHp()).toBeFalsy();
+  });
+
+  it("should make Dondozo immune to being forced out", async () => {
+    game.override.enemyMoveset([ Moves.SPLASH, Moves.WHIRLWIND ]);
+
+    await game.classicMode.startBattle([ Species.TATSUGIRI, Species.DONDOZO ]);
+
+    const [ tatsugiri, dondozo ] = game.scene.getPlayerField();
+
+    expect(game.scene.triggerPokemonBattleAnim).toHaveBeenLastCalledWith(tatsugiri, PokemonAnimType.COMMANDER_APPLY);
+    expect(dondozo.getTag(BattlerTagType.COMMANDED)).toBeDefined();
+
+    game.move.select(Moves.SPLASH, 1);
+
+    expect(game.scene.currentBattle.turnCommands[0]?.skip).toBeTruthy();
+
+    await game.forceEnemyMove(Moves.WHIRLWIND, BattlerIndex.PLAYER_2);
+    await game.forceEnemyMove(Moves.SPLASH);
+
+    // Test may time out here if Whirlwind forced out a Pokemon
+    await game.phaseInterceptor.to("TurnEndPhase");
+    expect(dondozo.isActive(true)).toBeTruthy();
+  });
+
+  it("should interrupt the source's semi-invulnerability", async () => {
+    game.override
+      .moveset([ Moves.SPLASH, Moves.DIVE ])
+      .enemyMoveset(Moves.SPLASH);
+
+    await game.classicMode.startBattle([ Species.TATSUGIRI, Species.MAGIKARP, Species.DONDOZO ]);
+
+    const tatsugiri = game.scene.getPlayerField()[0];
+
+    game.move.select(Moves.DIVE, 0, BattlerIndex.ENEMY);
+    game.move.select(Moves.SPLASH, 1);
+
+    await game.phaseInterceptor.to("CommandPhase");
+    await game.toNextTurn();
+
+    expect(tatsugiri.getTag(BattlerTagType.UNDERWATER)).toBeDefined();
+    game.doSwitchPokemon(2);
+
+    await game.phaseInterceptor.to("MovePhase", false);
+    const dondozo = game.scene.getPlayerField()[1];
+    expect(tatsugiri.getTag(BattlerTagType.UNDERWATER)).toBeUndefined();
+    expect(dondozo.getTag(BattlerTagType.COMMANDED)).toBeDefined();
+
+    await game.toNextTurn();
+    const enemy = game.scene.getEnemyField()[0];
+    expect(enemy.isFullHp()).toBeTruthy();
+  });
+});

src/test/moves/freeze_dry.test.ts

@@ -72,6 +72,31 @@ describe("Moves - Freeze-Dry", () => {
     expect(enemy.getMoveEffectiveness).toHaveReturnedWith(1);
   });
 
+  /**
+   * Freeze drys forced super effectiveness should overwrite wonder guard
+   */
+  it("should deal 2x dmg against soaked wonder guard target", async () => {
+    game.override
+      .enemySpecies(Species.SHEDINJA)
+      .enemyMoveset(Moves.SPLASH)
+      .starterSpecies(Species.MAGIKARP)
+      .moveset([ Moves.SOAK, Moves.FREEZE_DRY ]);
+    await game.classicMode.startBattle();
+
+    const enemy = game.scene.getEnemyPokemon()!;
+    vi.spyOn(enemy, "getMoveEffectiveness");
+
+    game.move.select(Moves.SOAK);
+    await game.setTurnOrder([ BattlerIndex.PLAYER, BattlerIndex.ENEMY ]);
+    await game.toNextTurn();
+
+    game.move.select(Moves.FREEZE_DRY);
+    await game.phaseInterceptor.to("MoveEffectPhase");
+
+    expect(enemy.getMoveEffectiveness).toHaveReturnedWith(2);
+    expect(enemy.hp).toBeLessThan(enemy.getMaxHp());
+  });
+
   // enable if this is ever fixed (lol)
   it.todo("should deal 2x damage to water types under Normalize", async () => {
     game.override.ability(Abilities.NORMALIZE);

src/test/moves/grudge.test.ts

@@ -0,0 +1,90 @@
+import { Abilities } from "#enums/abilities";
+import { Moves } from "#enums/moves";
+import { Species } from "#enums/species";
+import { BattlerIndex } from "#app/battle";
+import GameManager from "#test/utils/gameManager";
+import Phaser from "phaser";
+import { afterEach, beforeAll, beforeEach, describe, expect, it } from "vitest";
+
+describe("Moves - Grudge", () => {
+  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.EMBER, Moves.SPLASH ])
+      .ability(Abilities.BALL_FETCH)
+      .battleType("single")
+      .disableCrits()
+      .enemySpecies(Species.SHEDINJA)
+      .enemyAbility(Abilities.WONDER_GUARD)
+      .enemyMoveset([ Moves.GRUDGE, Moves.SPLASH ]);
+  });
+
+  it("should reduce the PP of the Pokemon's move to 0 when the user has fainted", async () => {
+    await game.classicMode.startBattle([ Species.FEEBAS ]);
+
+    const playerPokemon = game.scene.getPlayerPokemon();
+    game.move.select(Moves.EMBER);
+    await game.forceEnemyMove(Moves.GRUDGE);
+    await game.setTurnOrder([ BattlerIndex.ENEMY, BattlerIndex.PLAYER ]);
+    await game.phaseInterceptor.to("BerryPhase");
+
+    const playerMove = playerPokemon?.getMoveset().find(m => m?.moveId === Moves.EMBER);
+
+    expect(playerMove?.getPpRatio()).toBe(0);
+  });
+
+  it("should remain in effect until the user's next move", async () => {
+    await game.classicMode.startBattle([ Species.FEEBAS ]);
+
+    const playerPokemon = game.scene.getPlayerPokemon();
+    game.move.select(Moves.SPLASH);
+    await game.forceEnemyMove(Moves.GRUDGE);
+    await game.setTurnOrder([ BattlerIndex.PLAYER, BattlerIndex.ENEMY ]);
+    await game.toNextTurn();
+
+    game.move.select(Moves.EMBER);
+    await game.forceEnemyMove(Moves.SPLASH);
+    await game.setTurnOrder([ BattlerIndex.PLAYER, BattlerIndex.ENEMY ]);
+    await game.phaseInterceptor.to("BerryPhase");
+
+    const playerMove = playerPokemon?.getMoveset().find(m => m?.moveId === Moves.EMBER);
+
+    expect(playerMove?.getPpRatio()).toBe(0);
+  });
+
+  it("should not reduce the opponent's PP if the user dies to weather/indirect damage", async () => {
+    // Opponent will be reduced to 1 HP by False Swipe, then faint to Sandstorm
+    game.override
+      .moveset([ Moves.FALSE_SWIPE ])
+      .startingLevel(100)
+      .ability(Abilities.SAND_STREAM)
+      .enemySpecies(Species.RATTATA);
+    await game.classicMode.startBattle([ Species.GEODUDE ]);
+
+    const enemyPokemon = game.scene.getEnemyPokemon();
+    const playerPokemon = game.scene.getPlayerPokemon();
+
+    game.move.select(Moves.FALSE_SWIPE);
+    await game.forceEnemyMove(Moves.GRUDGE);
+    await game.setTurnOrder([ BattlerIndex.ENEMY, BattlerIndex.PLAYER ]);
+    await game.phaseInterceptor.to("BerryPhase");
+
+    expect(enemyPokemon?.isFainted()).toBe(true);
+
+    const playerMove = playerPokemon?.getMoveset().find(m => m?.moveId === Moves.FALSE_SWIPE);
+    expect(playerMove?.getPpRatio()).toBeGreaterThan(0);
+  });
+});

src/test/moves/order_up.test.ts

@@ -0,0 +1,85 @@
+import { BattlerIndex } from "#app/battle";
+import { BattlerTagType } from "#enums/battler-tag-type";
+import { PokemonAnimType } from "#enums/pokemon-anim-type";
+import { EffectiveStat, Stat } from "#enums/stat";
+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, vi } from "vitest";
+
+describe("Moves - Order Up", () => {
+  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.ORDER_UP)
+      .ability(Abilities.COMMANDER)
+      .battleType("double")
+      .disableCrits()
+      .enemySpecies(Species.SNORLAX)
+      .enemyAbility(Abilities.BALL_FETCH)
+      .enemyMoveset(Moves.SPLASH)
+      .startingLevel(100)
+      .enemyLevel(100);
+
+    vi.spyOn(game.scene, "triggerPokemonBattleAnim").mockReturnValue(true);
+  });
+
+  it.each([
+    { formIndex: 0, formName: "Curly", stat: Stat.ATK, statName: "Attack" },
+    { formIndex: 1, formName: "Droopy", stat: Stat.DEF, statName: "Defense" },
+    { formIndex: 2, formName: "Stretchy", stat: Stat.SPD, statName: "Speed" }
+  ])("should raise the user's $statName when the user is commanded by a $formName Tatsugiri", async ({ formIndex, stat }) => {
+    game.override.starterForms({ [Species.TATSUGIRI]: formIndex });
+
+    await game.classicMode.startBattle([ Species.TATSUGIRI, Species.DONDOZO ]);
+
+    const [ tatsugiri, dondozo ] = game.scene.getPlayerField();
+
+    expect(game.scene.triggerPokemonBattleAnim).toHaveBeenLastCalledWith(tatsugiri, PokemonAnimType.COMMANDER_APPLY);
+    expect(dondozo.getTag(BattlerTagType.COMMANDED)).toBeDefined();
+
+    game.move.select(Moves.ORDER_UP, 1, BattlerIndex.ENEMY);
+    expect(game.scene.currentBattle.turnCommands[0]?.skip).toBeTruthy();
+
+    await game.phaseInterceptor.to("BerryPhase", false);
+
+    const affectedStats: EffectiveStat[] = [ Stat.ATK, Stat.DEF, Stat.SPATK, Stat.SPDEF, Stat.SPD ];
+    affectedStats.forEach(st => expect(dondozo.getStatStage(st)).toBe(st === stat ? 3 : 2));
+  });
+
+  it("should be boosted by Sheer Force while still applying a stat boost", async () => {
+    game.override
+      .passiveAbility(Abilities.SHEER_FORCE)
+      .starterForms({ [Species.TATSUGIRI]: 0 });
+
+    await game.classicMode.startBattle([ Species.TATSUGIRI, Species.DONDOZO ]);
+
+    const [ tatsugiri, dondozo ] = game.scene.getPlayerField();
+
+    expect(game.scene.triggerPokemonBattleAnim).toHaveBeenLastCalledWith(tatsugiri, PokemonAnimType.COMMANDER_APPLY);
+    expect(dondozo.getTag(BattlerTagType.COMMANDED)).toBeDefined();
+
+    game.move.select(Moves.ORDER_UP, 1, BattlerIndex.ENEMY);
+    expect(game.scene.currentBattle.turnCommands[0]?.skip).toBeTruthy();
+
+    await game.phaseInterceptor.to("BerryPhase", false);
+
+    expect(dondozo.battleData.abilitiesApplied.includes(Abilities.SHEER_FORCE)).toBeTruthy();
+    expect(dondozo.getStatStage(Stat.ATK)).toBe(3);
+  });
+});

src/test/phases/form-change-phase.test.ts

@@ -0,0 +1,60 @@
+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 { Type } from "#app/data/type";
+import { generateModifierType } from "#app/data/mystery-encounters/utils/encounter-phase-utils";
+import { modifierTypes } from "#app/modifier/modifier-type";
+
+describe("Form Change Phase", () => {
+  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.SPLASH ])
+      .ability(Abilities.BALL_FETCH)
+      .battleType("single")
+      .disableCrits()
+      .enemySpecies(Species.MAGIKARP)
+      .enemyAbility(Abilities.BALL_FETCH)
+      .enemyMoveset(Moves.SPLASH);
+  });
+
+  it("Zacian should successfully change into Crowned form", async () => {
+    await game.classicMode.startBattle([ Species.ZACIAN ]);
+
+    // Before the form change: Should be Hero form
+    const zacian = game.scene.getPlayerParty()[0];
+    expect(zacian.getFormKey()).toBe("hero-of-many-battles");
+    expect(zacian.getTypes()).toStrictEqual([ Type.FAIRY ]);
+    expect(zacian.calculateBaseStats()).toStrictEqual([ 92, 120, 115, 80, 115, 138 ]);
+
+    // Give Zacian a Rusted Sword
+    const rustedSwordType = generateModifierType(game.scene, modifierTypes.RARE_FORM_CHANGE_ITEM)!;
+    const rustedSword = rustedSwordType.newModifier(zacian);
+    await game.scene.addModifier(rustedSword);
+
+    game.move.select(Moves.SPLASH);
+    await game.toNextTurn();
+
+    // After the form change: Should be Crowned form
+    expect(game.phaseInterceptor.log.includes("FormChangePhase")).toBe(true);
+    expect(zacian.getFormKey()).toBe("crowned");
+    expect(zacian.getTypes()).toStrictEqual([ Type.FAIRY, Type.STEEL ]);
+    expect(zacian.calculateBaseStats()).toStrictEqual([ 92, 150, 115, 80, 115, 148 ]);
+  });
+});

src/test/utils/helpers/classicModeHelper.ts

@@ -35,7 +35,7 @@ export class ClassicModeHelper extends GameManagerHelper {
       selectStarterPhase.initBattle(starters);
     });
 
-    await this.game.phaseInterceptor.run(EncounterPhase);
+    await this.game.phaseInterceptor.to(EncounterPhase);
     if (overrides.OPP_HELD_ITEMS_OVERRIDE.length === 0 && this.game.override.removeEnemyStartingItems) {
       this.game.removeEnemyHeldItems();
     }

src/test/utils/phaseInterceptor.ts

@@ -12,6 +12,7 @@ import { EndEvolutionPhase } from "#app/phases/end-evolution-phase";
 import { EnemyCommandPhase } from "#app/phases/enemy-command-phase";
 import { EvolutionPhase } from "#app/phases/evolution-phase";
 import { FaintPhase } from "#app/phases/faint-phase";
+import { FormChangePhase } from "#app/phases/form-change-phase";
 import { LearnMovePhase } from "#app/phases/learn-move-phase";
 import { LevelCapPhase } from "#app/phases/level-cap-phase";
 import { LoginPhase } from "#app/phases/login-phase";
@@ -67,7 +68,6 @@ type PhaseClass =
   | typeof LoginPhase
   | typeof TitlePhase
   | typeof SelectGenderPhase
-  | typeof EncounterPhase
   | typeof NewBiomeEncounterPhase
   | typeof SelectStarterPhase
   | typeof PostSummonPhase
@@ -102,6 +102,7 @@ type PhaseClass =
   | typeof SwitchPhase
   | typeof SwitchSummonPhase
   | typeof PartyHealPhase
+  | typeof FormChangePhase
   | typeof EvolutionPhase
   | typeof EndEvolutionPhase
   | typeof LevelCapPhase
@@ -114,13 +115,13 @@ type PhaseClass =
   | typeof PostMysteryEncounterPhase
   | typeof ModifierRewardPhase
   | typeof PartyExpPhase
-  | typeof ExpPhase;
+  | typeof ExpPhase
+  | typeof EncounterPhase;
 
 type PhaseString =
   | "LoginPhase"
   | "TitlePhase"
   | "SelectGenderPhase"
-  | "EncounterPhase"
   | "NewBiomeEncounterPhase"
   | "SelectStarterPhase"
   | "PostSummonPhase"
@@ -155,6 +156,7 @@ type PhaseString =
   | "SwitchPhase"
   | "SwitchSummonPhase"
   | "PartyHealPhase"
+  | "FormChangePhase"
   | "EvolutionPhase"
   | "EndEvolutionPhase"
   | "LevelCapPhase"
@@ -167,7 +169,8 @@ type PhaseString =
   | "PostMysteryEncounterPhase"
   | "ModifierRewardPhase"
   | "PartyExpPhase"
-  | "ExpPhase";
+  | "ExpPhase"
+  | "EncounterPhase";
 
 type PhaseInterceptorPhase = PhaseClass | PhaseString;
 
@@ -187,12 +190,16 @@ export default class PhaseInterceptor {
 
   /**
    * List of phases with their corresponding start methods.
+   *
+   * CAUTION: If a phase and its subclasses (if any) both appear in this list,
+   * make sure that this list contains said phase AFTER all of its subclasses.
+   * This way, the phase's `prototype.start` is properly preserved during
+   * `initPhases()` so that its subclasses can use `super.start()` properly.
    */
   private PHASES = [
     [ LoginPhase, this.startPhase ],
     [ TitlePhase, this.startPhase ],
     [ SelectGenderPhase, this.startPhase ],
-    [ EncounterPhase, this.startPhase ],
     [ NewBiomeEncounterPhase, this.startPhase ],
     [ SelectStarterPhase, this.startPhase ],
     [ PostSummonPhase, this.startPhase ],
@@ -227,6 +234,7 @@ export default class PhaseInterceptor {
     [ SwitchPhase, this.startPhase ],
     [ SwitchSummonPhase, this.startPhase ],
     [ PartyHealPhase, this.startPhase ],
+    [ FormChangePhase, this.startPhase ],
     [ EvolutionPhase, this.startPhase ],
     [ EndEvolutionPhase, this.startPhase ],
     [ LevelCapPhase, this.startPhase ],
@@ -240,6 +248,7 @@ export default class PhaseInterceptor {
     [ ModifierRewardPhase, this.startPhase ],
     [ PartyExpPhase, this.startPhase ],
     [ ExpPhase, this.startPhase ],
+    [ EncounterPhase, this.startPhase ],
   ];
 
   private endBySetMode = [