diff --git a/src/battle-scene.ts b/src/battle-scene.ts
index 93b05a39ecb..2a87dd49317 100644
--- a/src/battle-scene.ts
+++ b/src/battle-scene.ts
@@ -66,6 +66,8 @@ import { PlayerGender } from "#enums/player-gender";
 import { Species } from "#enums/species";
 import { UiTheme } from "#enums/ui-theme";
 import { TimedEventManager } from "#app/timed-event-manager.js";
+import { PokemonAnimPhase } from "./pokemon-anim-phase";
+import { PokemonAnimType } from "./enums/pokemon-anim-type";
 import i18next from "i18next";
 import {TrainerType} from "#enums/trainer-type";
 import { battleSpecDialogue } from "./data/dialogue";
@@ -950,10 +952,12 @@ export default class BattleScene extends SceneBase {
     this.enemyModifierBar.removeAll(true);
 
     for (const p of this.getParty()) {
+      p.destroySubstitute();
       p.destroy();
     }
     this.party = [];
     for (const p of this.getEnemyParty()) {
+      p.destroySubstitute();
       p.destroy();
     }
 
@@ -2582,6 +2586,16 @@ export default class BattleScene extends SceneBase {
     return false;
   }
 
+  triggerPokemonBattleAnim(pokemon: Pokemon, battleAnimType: PokemonAnimType, fieldAssets?: Phaser.GameObjects.Sprite[], delayed: boolean = false): boolean {
+    const phase: Phase = new PokemonAnimPhase(this, battleAnimType, pokemon, fieldAssets);
+    if (delayed) {
+      this.pushPhase(phase);
+    } else {
+      this.unshiftPhase(phase);
+    }
+    return true;
+  }
+
   validateAchvs(achvType: Constructor<Achv>, ...args: unknown[]): void {
     const filteredAchvs = Object.values(achvs).filter(a => a instanceof achvType);
     for (const achv of filteredAchvs) {
diff --git a/src/data/ability.ts b/src/data/ability.ts
index 491a14ba621..56f631f2fe0 100644
--- a/src/data/ability.ts
+++ b/src/data/ability.ts
@@ -1611,6 +1611,10 @@ export class PostAttackApplyStatusEffectAbAttr extends PostAttackAbAttr {
   }
 
   applyPostAttackAfterMoveTypeCheck(pokemon: Pokemon, passive: boolean, attacker: Pokemon, move: Move, hitResult: HitResult, args: any[]): boolean {
+    if (pokemon !== attacker && !!pokemon.getTag(BattlerTagType.SUBSTITUTE) && !move.canIgnoreSubstitute(attacker)) {
+      return false;
+    }
+
     /**Status inflicted by abilities post attacking are also considered additional effects.*/
     if (!attacker.hasAbilityWithAttr(IgnoreMoveEffectsAbAttr) && pokemon !== attacker && (!this.contactRequired || move.checkFlag(MoveFlags.MAKES_CONTACT, attacker, pokemon)) && pokemon.randSeedInt(100) < this.chance && !pokemon.status) {
       const effect = this.effects.length === 1 ? this.effects[0] : this.effects[pokemon.randSeedInt(this.effects.length)];
@@ -1965,6 +1969,10 @@ export class PostSummonStatChangeAbAttr extends PostSummonAbAttr {
       if (this.intimidate) {
         applyAbAttrs(IntimidateImmunityAbAttr, opponent, cancelled);
         applyAbAttrs(PostIntimidateStatChangeAbAttr, opponent, cancelled);
+
+        if (!!opponent.getTag(BattlerTagType.SUBSTITUTE)) {
+          cancelled.value = true;
+        }
       }
       if (!cancelled.value) {
         const statChangePhase = new StatChangePhase(pokemon.scene, opponent.getBattlerIndex(), false, this.stats, this.levels);
@@ -4303,7 +4311,7 @@ export const allAbilities = [ new Ability(Abilities.NONE, 3) ];
 export function initAbilities() {
   allAbilities.push(
     new Ability(Abilities.STENCH, 3)
-      .attr(PostAttackApplyBattlerTagAbAttr, false, (user, target, move) => !move.hasAttr(FlinchAttr) ? 10 : 0, BattlerTagType.FLINCHED),
+      .attr(PostAttackApplyBattlerTagAbAttr, false, (user, target, move) => !move.hasAttr(FlinchAttr) && (!target.getTag(BattlerTagType.SUBSTITUTE) || move.canIgnoreSubstitute(user)) ? 10 : 0, BattlerTagType.FLINCHED),
     new Ability(Abilities.DRIZZLE, 3)
       .attr(PostSummonWeatherChangeAbAttr, WeatherType.RAIN)
       .attr(PostBiomeChangeWeatherChangeAbAttr, WeatherType.RAIN),
diff --git a/src/data/battle-anims.ts b/src/data/battle-anims.ts
index d4dbb8ec350..43a5201b802 100644
--- a/src/data/battle-anims.ts
+++ b/src/data/battle-anims.ts
@@ -6,6 +6,7 @@ import * as Utils from "../utils";
 import { BattlerIndex } from "../battle";
 import { Element } from "json-stable-stringify";
 import { Moves } from "#enums/moves";
+import { SubstituteTag } from "./battler-tags";
 //import fs from 'vite-plugin-fs/browser';
 
 export enum AnimFrameTarget {
@@ -694,7 +695,7 @@ export abstract class BattleAnim {
       return false;
     }
 
-    private getGraphicFrameData(scene: BattleScene, frames: AnimFrame[]): Map<integer, Map<AnimFrameTarget, GraphicFrameData>> {
+    private getGraphicFrameData(scene: BattleScene, frames: AnimFrame[], onSubstitute?: boolean): Map<integer, Map<AnimFrameTarget, GraphicFrameData>> {
       const ret: Map<integer, Map<AnimFrameTarget, GraphicFrameData>> = new Map([
         [AnimFrameTarget.GRAPHIC, new Map<AnimFrameTarget, GraphicFrameData>() ],
         [AnimFrameTarget.USER, new Map<AnimFrameTarget, GraphicFrameData>() ],
@@ -705,12 +706,15 @@ export abstract class BattleAnim {
       const user = !isOppAnim ? this.user : this.target;
       const target = !isOppAnim ? this.target : this.user;
 
+      const targetSubstitute = (!!onSubstitute && user !== target) ? target.getTag(SubstituteTag) : null;
+
       const userInitialX = user.x;
       const userInitialY = user.y;
       const userHalfHeight = user.getSprite().displayHeight / 2;
-      const targetInitialX = target.x;
-      const targetInitialY = target.y;
-      const targetHalfHeight = target.getSprite().displayHeight / 2;
+
+      const targetInitialX = targetSubstitute?.sprite?.x ?? target.x;
+      const targetInitialY = targetSubstitute?.sprite?.y ?? target.y;
+      const targetHalfHeight = (targetSubstitute?.sprite ?? target.getSprite()).displayHeight / 2;
 
       let g = 0;
       let u = 0;
@@ -748,7 +752,7 @@ export abstract class BattleAnim {
       return ret;
     }
 
-    play(scene: BattleScene, callback?: Function) {
+    play(scene: BattleScene, onSubstitute?: boolean, callback?: Function) {
       const isOppAnim = this.isOppAnim();
       const user = !isOppAnim ? this.user : this.target;
       const target = !isOppAnim ? this.target : this.user;
@@ -760,8 +764,10 @@ export abstract class BattleAnim {
         return;
       }
 
+      const targetSubstitute = (!!onSubstitute && user !== target) ? target.getTag(SubstituteTag) : null;
+
       const userSprite = user.getSprite();
-      const targetSprite = target.getSprite();
+      const targetSprite = targetSubstitute?.sprite ?? target.getSprite();
 
       const spriteCache: SpriteCache = {
         [AnimFrameTarget.GRAPHIC]: [],
@@ -776,9 +782,18 @@ export abstract class BattleAnim {
         userSprite.setAlpha(1);
         userSprite.pipelineData["tone"] = [ 0.0, 0.0, 0.0, 0.0 ];
         userSprite.setAngle(0);
-        targetSprite.setPosition(0, 0);
-        targetSprite.setScale(1);
-        targetSprite.setAlpha(1);
+        if (!targetSubstitute) {
+          targetSprite.setPosition(0, 0);
+          targetSprite.setScale(1);
+          targetSprite.setAlpha(1);
+        } else {
+          targetSprite.setPosition(
+            target.x - target.getSubstituteOffset()[0],
+            target.y - target.getSubstituteOffset()[1]
+          );
+          targetSprite.setScale(target.getSpriteScale() * (target.isPlayer() ? 0.5 : 1));
+          targetSprite.setAlpha(1);
+        }
         targetSprite.pipelineData["tone"] = [ 0.0, 0.0, 0.0, 0.0 ];
         targetSprite.setAngle(0);
         if (!this.isHideUser()) {
@@ -808,8 +823,8 @@ export abstract class BattleAnim {
 
       const userInitialX = user.x;
       const userInitialY = user.y;
-      const targetInitialX = target.x;
-      const targetInitialY = target.y;
+      const targetInitialX = targetSubstitute?.sprite?.x ?? target.x;
+      const targetInitialY = targetSubstitute?.sprite?.y ?? target.y;
 
       this.srcLine = [ userFocusX, userFocusY, targetFocusX, targetFocusY ];
       this.dstLine = [ userInitialX, userInitialY, targetInitialX, targetInitialY ];
@@ -827,7 +842,7 @@ export abstract class BattleAnim {
           }
 
           const spriteFrames = anim.frames[f];
-          const frameData = this.getGraphicFrameData(scene, anim.frames[f]);
+          const frameData = this.getGraphicFrameData(scene, anim.frames[f], onSubstitute);
           let u = 0;
           let t = 0;
           let g = 0;
@@ -840,24 +855,34 @@ export abstract class BattleAnim {
               const sprites = spriteCache[isUser ? AnimFrameTarget.USER : AnimFrameTarget.TARGET];
               const spriteSource = isUser ? userSprite : targetSprite;
               if ((isUser ? u : t) === sprites.length) {
-                const sprite = scene.addPokemonSprite(isUser ? user : target, 0, 0, spriteSource.texture, spriteSource.frame.name, true);
-                [ "spriteColors", "fusionSpriteColors" ].map(k => sprite.pipelineData[k] = (isUser ? user : target).getSprite().pipelineData[k]);
-                sprite.setPipelineData("spriteKey", (isUser ? user : target).getBattleSpriteKey());
-                sprite.setPipelineData("shiny", (isUser ? user : target).shiny);
-                sprite.setPipelineData("variant", (isUser ? user : target).variant);
-                sprite.setPipelineData("ignoreFieldPos", true);
-                spriteSource.on("animationupdate", (_anim, frame) => sprite.setFrame(frame.textureFrame));
-                scene.field.add(sprite);
-                sprites.push(sprite);
+                if (!isUser && !!targetSubstitute) {
+                  const sprite = scene.addPokemonSprite(isUser ? user : target, 0, 0, spriteSource.texture, spriteSource.frame.name, true);
+                  [ "spriteColors", "fusionSpriteColors" ].map(k => sprite.pipelineData[k] = (isUser ? user : target).getSprite().pipelineData[k]);
+                  sprite.setPipelineData("spriteKey", (isUser ? user : target).getBattleSpriteKey());
+                  sprite.setPipelineData("shiny", (isUser ? user : target).shiny);
+                  sprite.setPipelineData("variant", (isUser ? user : target).variant);
+                  sprite.setPipelineData("ignoreFieldPos", true);
+                  spriteSource.on("animationupdate", (_anim, frame) => sprite.setFrame(frame.textureFrame));
+                  scene.field.add(sprite);
+                  sprites.push(sprite);
+                } else {
+                  const sprite = scene.addFieldSprite(spriteSource.x, spriteSource.y, spriteSource.texture);
+                  spriteSource.on("animationupdate", (_anim, frame) => sprite.setFrame(frame.textureFrame));
+                  scene.field.add(sprite);
+                  sprites.push(sprite);
+                }
               }
 
               const spriteIndex = isUser ? u++ : t++;
               const pokemonSprite = sprites[spriteIndex];
               const graphicFrameData = frameData.get(frame.target).get(spriteIndex);
-              pokemonSprite.setPosition(graphicFrameData.x, graphicFrameData.y - ((spriteSource.height / 2) * (spriteSource.parentContainer.scale - 1)));
+              const spriteSourceScale = (isUser || !targetSubstitute)
+                ? spriteSource.parentContainer.scale
+                : target.getSpriteScale() * (target.isPlayer() ? 0.5 : 1);
+              pokemonSprite.setPosition(graphicFrameData.x, graphicFrameData.y - ((spriteSource.height / 2) * (spriteSourceScale - 1)));
 
               pokemonSprite.setAngle(graphicFrameData.angle);
-              pokemonSprite.setScale(graphicFrameData.scaleX * spriteSource.parentContainer.scale,  graphicFrameData.scaleY * spriteSource.parentContainer.scale);
+              pokemonSprite.setScale(graphicFrameData.scaleX * spriteSourceScale,  graphicFrameData.scaleY * spriteSourceScale);
 
               pokemonSprite.setData("locked", frame.locked);
 
diff --git a/src/data/battler-tags.ts b/src/data/battler-tags.ts
index ce70240df8c..a822c581f7d 100644
--- a/src/data/battler-tags.ts
+++ b/src/data/battler-tags.ts
@@ -18,6 +18,7 @@ import { BattlerTagType } from "#enums/battler-tag-type";
 import { Moves } from "#enums/moves";
 import { Species } from "#enums/species";
 import i18next from "#app/plugins/i18n.js";
+import { PokemonAnimType } from "#app/enums/pokemon-anim-type.js";
 
 export enum BattlerTagLapseType {
   FAINT,
@@ -26,6 +27,7 @@ export enum BattlerTagLapseType {
   AFTER_MOVE,
   MOVE_EFFECT,
   TURN_END,
+  HIT,
   CUSTOM
 }
 
@@ -126,8 +128,9 @@ export class TrappedTag extends BattlerTag {
   canAdd(pokemon: Pokemon): boolean {
     const isGhost = pokemon.isOfType(Type.GHOST);
     const isTrapped = pokemon.getTag(BattlerTagType.TRAPPED);
+    const hasSubstitute = pokemon.getTag(BattlerTagType.SUBSTITUTE);
 
-    return !isTrapped && !isGhost;
+    return !isTrapped && !isGhost && !hasSubstitute;
   }
 
   onAdd(pokemon: Pokemon): void {
@@ -765,7 +768,7 @@ export abstract class DamagingTrapTag extends TrappedTag {
   }
 
   canAdd(pokemon: Pokemon): boolean {
-    return !pokemon.isOfType(Type.GHOST) && !pokemon.findTag(t => t instanceof DamagingTrapTag);
+    return !pokemon.isOfType(Type.GHOST) && !pokemon.findTag(t => t instanceof DamagingTrapTag) && !pokemon.getTag(BattlerTagType.SUBSTITUTE);
   }
 
   lapse(pokemon: Pokemon, lapseType: BattlerTagLapseType): boolean {
@@ -1558,7 +1561,6 @@ export class IceFaceTag extends BattlerTag {
   }
 }
 
-
 /**
  * Battler tag enabling the Stockpile mechanic. This tag handles:
  * - Stack tracking, including max limit enforcement (which is replicated in Stockpile for redundancy).
@@ -1587,7 +1589,6 @@ export class StockpilingTag extends BattlerTag {
     if (defChange) {
       this.statChangeCounts[BattleStat.DEF]++;
     }
-
     if (spDefChange) {
       this.statChangeCounts[BattleStat.SPDEF]++;
     }
@@ -1647,6 +1648,94 @@ export class StockpilingTag extends BattlerTag {
   }
 }
 
+export class SubstituteTag extends BattlerTag {
+  /** The substitute's remaining HP. If HP is depleted, the Substitute fades. */
+  public hp: number;
+  /** A reference to the sprite representing the Substitute doll */
+  public sprite: Phaser.GameObjects.Sprite;
+  /** Is the source Pokemon "in focus," i.e. is it fully visible on the field? */
+  public sourceInFocus: boolean;
+
+  constructor(sourceMove: Moves, sourceId: integer) {
+    super(BattlerTagType.SUBSTITUTE, [BattlerTagLapseType.PRE_MOVE, BattlerTagLapseType.AFTER_MOVE, BattlerTagLapseType.HIT], 0, sourceMove, sourceId);
+  }
+
+  /** Sets the Substitute's HP and queues an on-add battle animation that initializes the Substitute's sprite. */
+  onAdd(pokemon: Pokemon): void {
+    this.hp = Math.floor(pokemon.scene.getPokemonById(this.sourceId).getMaxHp() / 4);
+    this.sourceInFocus = false;
+
+    // Queue battle animation and message
+    pokemon.scene.triggerPokemonBattleAnim(pokemon, PokemonAnimType.SUBSTITUTE_ADD);
+    pokemon.scene.queueMessage(i18next.t("battle:battlerTagsSubstituteOnAdd", { pokemonNameWithAffix: getPokemonNameWithAffix(pokemon) }), 1500);
+
+    // Remove any trapping effects from the user
+    pokemon.findAndRemoveTags(tag => tag instanceof TrappedTag);
+  }
+
+  /** Queues an on-remove battle animation that removes the Substitute's sprite. */
+  onRemove(pokemon: Pokemon): void {
+    // Only play the animation if the cause of removal isn't from the source's own move
+    if (!this.sourceInFocus) {
+      pokemon.scene.triggerPokemonBattleAnim(pokemon, PokemonAnimType.SUBSTITUTE_REMOVE, [this.sprite]);
+    } else {
+      this.sprite.destroy();
+    }
+    pokemon.scene.queueMessage(i18next.t("battle:battlerTagsSubstituteOnRemove", { pokemonNameWithAffix: getPokemonNameWithAffix(pokemon) }));
+  }
+
+  lapse(pokemon: Pokemon, lapseType: BattlerTagLapseType): boolean {
+    switch (lapseType) {
+    case BattlerTagLapseType.PRE_MOVE:
+      this.onPreMove(pokemon);
+      break;
+    case BattlerTagLapseType.AFTER_MOVE:
+      this.onAfterMove(pokemon);
+      break;
+    case BattlerTagLapseType.HIT:
+      this.onHit(pokemon);
+      break;
+    }
+    return lapseType !== BattlerTagLapseType.CUSTOM; // only remove this tag on custom lapse
+  }
+
+  /** Triggers an animation that brings the Pokemon into focus before it uses a move */
+  onPreMove(pokemon: Pokemon): void {
+    pokemon.scene.triggerPokemonBattleAnim(pokemon, PokemonAnimType.SUBSTITUTE_PRE_MOVE, [this.sprite]);
+    this.sourceInFocus = true;
+  }
+
+  /** Triggers an animation that brings the Pokemon out of focus after it uses a move */
+  onAfterMove(pokemon: Pokemon): void {
+    pokemon.scene.triggerPokemonBattleAnim(pokemon, PokemonAnimType.SUBSTITUTE_POST_MOVE, [this.sprite]);
+    this.sourceInFocus = false;
+  }
+
+  /** If the Substitute redirects damage, queue a message to indicate it. */
+  onHit(pokemon: Pokemon): void {
+    const moveEffectPhase = pokemon.scene.getCurrentPhase();
+    if (moveEffectPhase instanceof MoveEffectPhase) {
+      const attacker = moveEffectPhase.getUserPokemon();
+      const move = moveEffectPhase.move.getMove();
+      const firstHit = (attacker.turnData.hitCount === attacker.turnData.hitsLeft);
+
+      if (firstHit && !move.canIgnoreSubstitute(attacker)) {
+        pokemon.scene.queueMessage(i18next.t("battle:battlerTagsSubstituteOnHit", { pokemonNameWithAffix: getPokemonNameWithAffix(pokemon) }));
+      }
+    }
+  }
+
+  /**
+  * When given a battler tag or json representing one, load the data for it.
+  * @param {BattlerTag | any} source A battler tag
+  */
+  loadTag(source: BattlerTag | any): void {
+    super.loadTag(source);
+    this.hp = source.hp;
+    // TODO: load this tag's sprite (or generate a new one upon loading a game)
+  }
+}
+
 export function getBattlerTag(tagType: BattlerTagType, turnCount: number, sourceMove: Moves, sourceId: number): BattlerTag {
   switch (tagType) {
   case BattlerTagType.RECHARGING:
@@ -1770,6 +1859,8 @@ export function getBattlerTag(tagType: BattlerTagType, turnCount: number, source
     return new StockpilingTag(sourceMove);
   case BattlerTagType.OCTOLOCK:
     return new OctolockTag(sourceId);
+  case BattlerTagType.SUBSTITUTE:
+    return new SubstituteTag(sourceMove, sourceId);
   case BattlerTagType.NONE:
   default:
     return new BattlerTag(tagType, BattlerTagLapseType.CUSTOM, turnCount, sourceMove, sourceId);
diff --git a/src/data/move.ts b/src/data/move.ts
index f90aef585d6..422bc473913 100644
--- a/src/data/move.ts
+++ b/src/data/move.ts
@@ -1,7 +1,7 @@
 import { ChargeAnim, MoveChargeAnim, initMoveAnim, loadMoveAnimAssets } from "./battle-anims";
 import { BattleEndPhase, MoveEndPhase, MovePhase, NewBattlePhase, PartyStatusCurePhase, PokemonHealPhase, StatChangePhase, SwitchSummonPhase } from "../phases";
 import { BattleStat, getBattleStatName } from "./battle-stat";
-import { EncoreTag, HelpingHandTag, SemiInvulnerableTag, StockpilingTag, TypeBoostTag } from "./battler-tags";
+import { EncoreTag, HelpingHandTag, SemiInvulnerableTag, StockpilingTag, SubstituteTag, TypeBoostTag } from "./battler-tags";
 import { getPokemonMessage, getPokemonNameWithAffix } from "../messages";
 import Pokemon, { AttackMoveResult, EnemyPokemon, HitResult, MoveResult, PlayerPokemon, PokemonMove, TurnMove } from "../field/pokemon";
 import { StatusEffect, getStatusEffectHealText, isNonVolatileStatusEffect, getNonVolatileStatusEffects} from "./status-effect";
@@ -91,11 +91,12 @@ export enum MoveFlags {
   /**
    * Enables all hits of a multi-hit move to be accuracy checked individually
    */
-  CHECK_ALL_HITS   = 1 << 17,
+  CHECK_ALL_HITS    = 1 << 17,
+  IGNORE_SUBSTITUTE = 1 << 18,
   /**
    * Indicates a move is able to be redirected to allies in a double battle if the attacker faints
    */
-  REDIRECT_COUNTER = 1 << 18,
+  REDIRECT_COUNTER  = 1 << 19,
 }
 
 type MoveConditionFunc = (user: Pokemon, target: Pokemon, move: Move) => boolean;
@@ -310,6 +311,18 @@ export default class Move implements Localizable {
     return false;
   }
 
+  /**
+   * Checks if the move can bypass Substitute to directly hit its target
+   * @param user The {@linkcode Pokemon} using this move
+   * @returns `true` if the move can bypass the target's Substitute; `false` otherwise.
+   */
+  canIgnoreSubstitute(user: Pokemon): boolean {
+    return this.moveTarget === MoveTarget.USER
+        || user?.hasAbility(Abilities.INFILTRATOR)
+        || this.hasFlag(MoveFlags.SOUND_BASED)
+        || this.hasFlag(MoveFlags.IGNORE_SUBSTITUTE);
+  }
+
   /**
    * Adds a move condition to the move
    * @param condition {@linkcode MoveCondition} or {@linkcode MoveConditionFunc}, appends to conditions array a new MoveCondition object
@@ -553,6 +566,17 @@ export default class Move implements Localizable {
     return this;
   }
 
+  /**
+   * Sets the {@linkcode MoveFlags.IGNORE_SUBSTITUTE} flag for the calling Move
+   * @param ignoresSubstitute The value (boolean) to set the flag to
+   * example: @see {@linkcode Moves.WHIRLWIND}
+   * @returns The {@linkcode Move} that called this function
+   */
+  ignoresSubstitute(ignoresSubstitute?: boolean): this {
+    this.setFlag(MoveFlags.IGNORE_SUBSTITUTE, ignoresSubstitute);
+    return this;
+  }
+
   /**
    * Sets the {@linkcode MoveFlags.REDIRECT_COUNTER} flag for the calling Move
    * @param redirectCounter The value (boolean) to set the flag to
@@ -1351,6 +1375,44 @@ export class HalfSacrificialAttr extends MoveEffectAttr {
   }
 }
 
+/**
+ * Attribute to put in a {@link https://bulbapedia.bulbagarden.net/wiki/Substitute_(doll) | Substitute Doll}
+ * for the user.
+ * @extends MoveEffectAttr
+ * @see {@linkcode apply}
+ */
+export class AddSubstituteAttr extends MoveEffectAttr {
+  constructor() {
+    super(true);
+  }
+
+  /**
+   * Removes 1/4 of the user's maximum HP (rounded down) to create a substitute for the user
+   * @param user the {@linkcode Pokemon} that used the move.
+   * @param target n/a
+   * @param move the {@linkcode Move} with this attribute.
+   * @param args n/a
+   * @returns true if the attribute successfully applies, false otherwise
+   */
+  apply(user: Pokemon, target: Pokemon, move: Move, args: any[]): boolean {
+    if (!super.apply(user, target, move, args)) {
+      return false;
+    }
+
+    const hpCost = Math.floor(user.getMaxHp() / 4);
+    user.damageAndUpdate(hpCost, HitResult.OTHER, false, true, true);
+    user.addTag(BattlerTagType.SUBSTITUTE, 0, move.id, user.id);
+    return true;
+  }
+
+  getUserBenefitScore(user: Pokemon, target: Pokemon, move: Move): number {
+    if (user.isBoss() || user.getHpRatio() < 0.25) {
+      return -10;
+    }
+    return Math.ceil(user.getHpRatio() * 10);
+  }
+}
+
 export enum MultiHitType {
   _2,
   _2_TO_5,
@@ -1865,6 +1927,10 @@ export class StatusEffectAttr extends MoveEffectAttr {
   }
 
   apply(user: Pokemon, target: Pokemon, move: Move, args: any[]): boolean {
+    if (!this.selfTarget && !!target.getTag(SubstituteTag) && !move.canIgnoreSubstitute(user)) {
+      return false;
+    }
+
     const moveChance = this.getMoveChance(user, target, move, this.selfTarget, true);
     const statusCheck = moveChance < 0 || moveChance === 100 || user.randSeedInt(100) < moveChance;
     if (statusCheck) {
@@ -1956,6 +2022,9 @@ export class StealHeldItemChanceAttr extends MoveEffectAttr {
 
   apply(user: Pokemon, target: Pokemon, move: Move, args: any[]): Promise<boolean> {
     return new Promise<boolean>(resolve => {
+      if (!!target.getTag(SubstituteTag) && !move.canIgnoreSubstitute(user)) {
+        return resolve(false);
+      }
       const rand = Phaser.Math.RND.realInRange(0, 1);
       if (rand >= this.chance) {
         return resolve(false);
@@ -2025,6 +2094,10 @@ export class RemoveHeldItemAttr extends MoveEffectAttr {
       return false;
     }
 
+    if (!!target.getTag(SubstituteTag) && !move.canIgnoreSubstitute(user)) {
+      return false;
+    }
+
     const cancelled = new Utils.BooleanHolder(false);
     applyAbAttrs(BlockItemTheftAbAttr, target, cancelled); // Check for abilities that block item theft
 
@@ -2145,6 +2218,9 @@ export class StealEatBerryAttr extends EatBerryAttr {
    * @returns {boolean} true if the function succeeds
    */
   apply(user: Pokemon, target: Pokemon, move: Move, args: any[]): boolean {
+    if (!!target.getTag(SubstituteTag) && !move.canIgnoreSubstitute(user)) {
+      return false;
+    }
     const cancelled = new Utils.BooleanHolder(false);
     applyAbAttrs(BlockItemTheftAbAttr, target, cancelled); // check for abilities that block item theft
     if (cancelled.value === true) {
@@ -2195,6 +2271,10 @@ export class HealStatusEffectAttr extends MoveEffectAttr {
       return false;
     }
 
+    if (!this.selfTarget && !!target.getTag(SubstituteTag) && !move.canIgnoreSubstitute(user)) {
+      return false;
+    }
+
     // Special edge case for shield dust blocking Sparkling Aria curing burn
     const moveTargets = getMoveTargets(user, move.id);
     if (target.hasAbilityWithAttr(IgnoreMoveEffectsAbAttr) && move.id === Moves.SPARKLING_ARIA && moveTargets.targets.length === 1) {
@@ -2375,7 +2455,7 @@ export class ChargeAttr extends OverrideMoveEffectAttr {
       const lastMove = user.getLastXMoves().find(() => true);
       if (!lastMove || lastMove.move !== move.id || (lastMove.result !== MoveResult.OTHER && (this.sameTurn || lastMove.turn !== user.scene.currentBattle.turn))) {
         (args[0] as Utils.BooleanHolder).value = true;
-        new MoveChargeAnim(this.chargeAnim, move.id, user).play(user.scene, () => {
+        new MoveChargeAnim(this.chargeAnim, move.id, user).play(user.scene, false, () => {
           user.scene.queueMessage(this.chargeText.replace("{TARGET}", getPokemonNameWithAffix(target)).replace("{USER}", getPokemonNameWithAffix(user)));
           if (this.tagType) {
             user.addTag(this.tagType, 1, move.id, user.id);
@@ -2482,7 +2562,7 @@ export class DelayedAttackAttr extends OverrideMoveEffectAttr {
   apply(user: Pokemon, target: Pokemon, move: Move, args: any[]): Promise<boolean> {
     return new Promise(resolve => {
       if (args.length < 2 || !args[1]) {
-        new MoveChargeAnim(this.chargeAnim, move.id, user).play(user.scene, () => {
+        new MoveChargeAnim(this.chargeAnim, move.id, user).play(user.scene, false, () => {
           (args[0] as Utils.BooleanHolder).value = true;
           user.scene.queueMessage(this.chargeText.replace("{TARGET}", getPokemonNameWithAffix(target)).replace("{USER}", getPokemonNameWithAffix(user)));
           user.pushMoveHistory({ move: move.id, targets: [ target.getBattlerIndex() ], result: MoveResult.OTHER });
@@ -2518,6 +2598,10 @@ export class StatChangeAttr extends MoveEffectAttr {
       return false;
     }
 
+    if (!this.selfTarget && !!target.getTag(SubstituteTag) && !move.canIgnoreSubstitute(user)) {
+      return false;
+    }
+
     const moveChance = this.getMoveChance(user, target, move, this.selfTarget, true);
     if (moveChance < 0 || moveChance === 100 || user.randSeedInt(100) < moveChance) {
       const levels = this.getLevels(user);
@@ -2724,6 +2808,10 @@ export class ResetStatsAttr extends MoveEffectAttr {
       return false;
     }
 
+    if (!!target.getTag(SubstituteTag) && !move.canIgnoreSubstitute(user)) {
+      return false;
+    }
+
     for (let s = 0; s < target.summonData.battleStats.length; s++) {
       target.summonData.battleStats[s] = 0;
     }
@@ -4373,12 +4461,26 @@ export class FlinchAttr extends AddBattlerTagAttr {
   constructor() {
     super(BattlerTagType.FLINCHED, false);
   }
+
+  apply(user: Pokemon, target: Pokemon, move: Move, args: any[]): boolean {
+    if (!target.getTag(SubstituteTag) || move.canIgnoreSubstitute(user)) {
+      return super.apply(user, target, move, args);
+    }
+    return false;
+  }
 }
 
 export class ConfuseAttr extends AddBattlerTagAttr {
   constructor(selfTarget?: boolean) {
     super(BattlerTagType.CONFUSED, selfTarget, false, 2, 5);
   }
+
+  apply(user: Pokemon, target: Pokemon, move: Move, args: any[]): boolean {
+    if (!target.getTag(SubstituteTag) || move.canIgnoreSubstitute(user)) {
+      return super.apply(user, target, move, args);
+    }
+    return false;
+  }
 }
 
 export class RechargeAttr extends AddBattlerTagAttr {
@@ -4451,6 +4553,22 @@ export class FaintCountdownAttr extends AddBattlerTagAttr {
   }
 }
 
+export class RemoveAllSubstitutesAttr extends MoveEffectAttr {
+  constructor() {
+    super(true);
+  }
+
+  apply(user: Pokemon, target: Pokemon, move: Move, args: any[]): boolean {
+    if (!super.apply(user, target, move, args)) {
+      return false;
+    }
+
+    user.scene.getField(true).forEach(pokemon =>
+      pokemon.findAndRemoveTags(tag => tag.tagType === BattlerTagType.SUBSTITUTE));
+    return true;
+  }
+}
+
 /**
  * Attribute used when a move hits a {@linkcode BattlerTagType} for double damage
  * @extends MoveAttr
@@ -4837,6 +4955,10 @@ export class ForceSwitchOutAttr extends MoveEffectAttr {
       const switchOutTarget = (this.user ? user : target);
       const player = switchOutTarget instanceof PlayerPokemon;
 
+      if (!this.user && !!target.getTag(SubstituteTag) && !move.canIgnoreSubstitute(user)) {
+        return false;
+      }
+
       if (!this.user && move.category === MoveCategory.STATUS && (target.hasAbilityWithAttr(ForceSwitchOutImmunityAbAttr) || target.isMax())) {
         return false;
       }
@@ -6026,6 +6148,7 @@ export function initMoves() {
     new StatusMove(Moves.WHIRLWIND, Type.NORMAL, -1, 20, -1, -6, 1)
       .attr(ForceSwitchOutAttr)
       .attr(HitsTagAttr, BattlerTagType.FLYING, false)
+      .ignoresSubstitute()
       .hidesTarget()
       .windMove(),
     new AttackMove(Moves.FLY, Type.FLYING, MoveCategory.PHYSICAL, 90, 95, 15, -1, 0, 1)
@@ -6115,6 +6238,7 @@ export function initMoves() {
       .attr(FixedDamageAttr, 20),
     new StatusMove(Moves.DISABLE, Type.NORMAL, 100, 20, -1, 0, 1)
       .attr(DisableMoveAttr)
+      .ignoresSubstitute()
       .condition(failOnMaxCondition),
     new AttackMove(Moves.ACID, Type.POISON, MoveCategory.SPECIAL, 40, 100, 30, 10, 0, 1)
       .attr(StatChangeAttr, BattleStat.SPDEF, -1)
@@ -6251,6 +6375,7 @@ export function initMoves() {
       .attr(LevelDamageAttr),
     new StatusMove(Moves.MIMIC, Type.NORMAL, -1, 10, -1, 0, 1)
       .attr(MovesetCopyMoveAttr)
+      .ignoresSubstitute()
       .ignoresVirtual(),
     new StatusMove(Moves.SCREECH, Type.NORMAL, 85, 40, -1, 0, 1)
       .attr(StatChangeAttr, BattleStat.DEF, -2)
@@ -6279,6 +6404,7 @@ export function initMoves() {
       .attr(AddArenaTagAttr, ArenaTagType.LIGHT_SCREEN, 5, true)
       .target(MoveTarget.USER_SIDE),
     new StatusMove(Moves.HAZE, Type.ICE, -1, 30, -1, 0, 1)
+      .ignoresSubstitute()
       .target(MoveTarget.BOTH_SIDES)
       .attr(ResetStatsAttr),
     new StatusMove(Moves.REFLECT, Type.PSYCHIC, -1, 20, -1, 0, 1)
@@ -6422,14 +6548,15 @@ export function initMoves() {
       .attr(HighCritAttr)
       .slicingMove(),
     new SelfStatusMove(Moves.SUBSTITUTE, Type.NORMAL, -1, 10, -1, 0, 1)
-      .attr(RecoilAttr)
-      .unimplemented(),
+      .attr(AddSubstituteAttr)
+      .condition((user, target, move) => !user.getTag(SubstituteTag) && user.getHpRatio() > 0.25 && user.getMaxHp() > 1),
     new AttackMove(Moves.STRUGGLE, Type.NORMAL, MoveCategory.PHYSICAL, 50, -1, 1, -1, 0, 1)
       .attr(RecoilAttr, true, 0.25, true)
       .attr(TypelessAttr)
       .ignoresVirtual()
       .target(MoveTarget.RANDOM_NEAR_ENEMY),
     new StatusMove(Moves.SKETCH, Type.NORMAL, -1, 1, -1, 0, 2)
+      .ignoresSubstitute()
       .attr(SketchAttr)
       .ignoresVirtual(),
     new AttackMove(Moves.TRIPLE_KICK, Type.FIGHTING, MoveCategory.PHYSICAL, 10, 90, 10, -1, 0, 2)
@@ -6455,12 +6582,14 @@ export function initMoves() {
       .soundBased(),
     new StatusMove(Moves.CURSE, Type.GHOST, -1, 10, -1, 0, 2)
       .attr(CurseAttr)
+      .ignoresSubstitute()
       .ignoresProtect(true)
       .target(MoveTarget.CURSE),
     new AttackMove(Moves.FLAIL, Type.NORMAL, MoveCategory.PHYSICAL, -1, 100, 15, -1, 0, 2)
       .attr(LowHpPowerAttr),
     new StatusMove(Moves.CONVERSION_2, Type.NORMAL, -1, 30, -1, 0, 2)
       .attr(ResistLastMoveTypeAttr)
+      .ignoresSubstitute()
       .partial(), // Checks the move's original typing and not if its type is changed through some other means
     new AttackMove(Moves.AEROBLAST, Type.FLYING, MoveCategory.SPECIAL, 100, 95, 5, -1, 0, 2)
       .windMove()
@@ -6472,6 +6601,7 @@ export function initMoves() {
     new AttackMove(Moves.REVERSAL, Type.FIGHTING, MoveCategory.PHYSICAL, -1, 100, 15, -1, 0, 2)
       .attr(LowHpPowerAttr),
     new StatusMove(Moves.SPITE, Type.GHOST, 100, 10, -1, 0, 2)
+      .ignoresSubstitute()
       .attr(ReducePpMoveAttr, 4),
     new AttackMove(Moves.POWDER_SNOW, Type.ICE, MoveCategory.SPECIAL, 40, 100, 25, 10, 0, 2)
       .attr(StatusEffectAttr, StatusEffect.FREEZE)
@@ -6502,6 +6632,7 @@ export function initMoves() {
       .attr(StatusEffectAttr, StatusEffect.PARALYSIS)
       .ballBombMove(),
     new StatusMove(Moves.FORESIGHT, Type.NORMAL, -1, 40, -1, 0, 2)
+      .ignoresSubstitute()
       .unimplemented(),
     new SelfStatusMove(Moves.DESTINY_BOND, Type.GHOST, -1, 5, -1, 0, 2)
       .ignoresProtect()
@@ -6559,6 +6690,7 @@ export function initMoves() {
       .attr(AddBattlerTagAttr, BattlerTagType.TRAPPED, false, true, 1),
     new StatusMove(Moves.ATTRACT, Type.NORMAL, 100, 15, -1, 0, 2)
       .attr(AddBattlerTagAttr, BattlerTagType.INFATUATED)
+      .ignoresSubstitute()
       .condition((user, target, move) => user.isOppositeGender(target)),
     new SelfStatusMove(Moves.SLEEP_TALK, Type.NORMAL, -1, 10, -1, 0, 2)
       .attr(BypassSleepAttr)
@@ -6604,6 +6736,7 @@ export function initMoves() {
       .hidesUser(),
     new StatusMove(Moves.ENCORE, Type.NORMAL, 100, 5, -1, 0, 2)
       .attr(AddBattlerTagAttr, BattlerTagType.ENCORE, false, true)
+      .ignoresSubstitute()
       .condition((user, target, move) => new EncoreTag(user.id).canAdd(target)),
     new AttackMove(Moves.PURSUIT, Type.DARK, MoveCategory.PHYSICAL, 40, 100, 20, -1, 0, 2)
       .partial(),
@@ -6662,6 +6795,7 @@ export function initMoves() {
       .attr(CounterDamageAttr, (move: Move) => move.category === MoveCategory.SPECIAL, 2)
       .target(MoveTarget.ATTACKER),
     new StatusMove(Moves.PSYCH_UP, Type.NORMAL, -1, 10, -1, 0, 2)
+      .ignoresSubstitute()
       .attr(CopyStatsAttr),
     new AttackMove(Moves.EXTREME_SPEED, Type.NORMAL, MoveCategory.PHYSICAL, 80, 100, 5, -1, 2, 2),
     new AttackMove(Moves.ANCIENT_POWER, Type.ROCK, MoveCategory.SPECIAL, 60, 100, 5, 10, 0, 2)
@@ -6709,6 +6843,7 @@ export function initMoves() {
       .attr(WeatherChangeAttr, WeatherType.HAIL)
       .target(MoveTarget.BOTH_SIDES),
     new StatusMove(Moves.TORMENT, Type.DARK, 100, 15, -1, 0, 3)
+      .ignoresSubstitute()
       .unimplemented(),
     new StatusMove(Moves.FLATTER, Type.DARK, 100, 15, -1, 0, 3)
       .attr(StatChangeAttr, BattleStat.SPATK, 1)
@@ -6738,13 +6873,16 @@ export function initMoves() {
       .attr(StatChangeAttr, BattleStat.SPDEF, 1, true)
       .attr(AddBattlerTagAttr, BattlerTagType.CHARGED, true, false),
     new StatusMove(Moves.TAUNT, Type.DARK, 100, 20, -1, 0, 3)
+      .ignoresSubstitute()
       .unimplemented(),
     new StatusMove(Moves.HELPING_HAND, Type.NORMAL, -1, 20, -1, 5, 3)
       .attr(AddBattlerTagAttr, BattlerTagType.HELPING_HAND)
+      .ignoresSubstitute()
       .target(MoveTarget.NEAR_ALLY),
     new StatusMove(Moves.TRICK, Type.PSYCHIC, 100, 10, -1, 0, 3)
       .unimplemented(),
     new StatusMove(Moves.ROLE_PLAY, Type.PSYCHIC, -1, 10, -1, 0, 3)
+      .ignoresSubstitute()
       .attr(AbilityCopyAttr),
     new SelfStatusMove(Moves.WISH, Type.NORMAL, -1, 10, -1, 0, 3)
       .triageMove()
@@ -6777,8 +6915,10 @@ export function initMoves() {
       .attr(HpPowerAttr)
       .target(MoveTarget.ALL_NEAR_ENEMIES),
     new StatusMove(Moves.SKILL_SWAP, Type.PSYCHIC, -1, 10, -1, 0, 3)
+      .ignoresSubstitute()
       .attr(SwitchAbilitiesAttr),
     new SelfStatusMove(Moves.IMPRISON, Type.PSYCHIC, -1, 10, -1, 0, 3)
+      .ignoresSubstitute()
       .unimplemented(),
     new SelfStatusMove(Moves.REFRESH, Type.NORMAL, -1, 20, -1, 0, 3)
       .attr(HealStatusEffectAttr, true, StatusEffect.PARALYSIS, StatusEffect.POISON, StatusEffect.TOXIC, StatusEffect.BURN)
@@ -6860,6 +7000,7 @@ export function initMoves() {
       .attr(StatChangeAttr, BattleStat.SPATK, -2, true)
       .attr(HealStatusEffectAttr, true, StatusEffect.FREEZE),
     new StatusMove(Moves.ODOR_SLEUTH, Type.NORMAL, -1, 40, -1, 0, 3)
+      .ignoresSubstitute()
       .unimplemented(),
     new AttackMove(Moves.ROCK_TOMB, Type.ROCK, MoveCategory.PHYSICAL, 60, 95, 15, 100, 0, 3)
       .attr(StatChangeAttr, BattleStat.SPD, -1)
@@ -6969,6 +7110,7 @@ export function initMoves() {
       .attr(AddArenaTagAttr, ArenaTagType.GRAVITY, 5)
       .target(MoveTarget.BOTH_SIDES),
     new StatusMove(Moves.MIRACLE_EYE, Type.PSYCHIC, -1, 40, -1, 0, 4)
+      .ignoresSubstitute()
       .unimplemented(),
     new AttackMove(Moves.WAKE_UP_SLAP, Type.FIGHTING, MoveCategory.PHYSICAL, 70, 100, 10, -1, 0, 4)
       .attr(MovePowerMultiplierAttr, (user, target, move) => targetSleptOrComatoseCondition(user, target, move) ? 2 : 1)
@@ -7047,6 +7189,7 @@ export function initMoves() {
       .target(MoveTarget.USER_SIDE)
       .unimplemented(),
     new StatusMove(Moves.ME_FIRST, Type.NORMAL, -1, 20, -1, 0, 4)
+      .ignoresSubstitute()
       .ignoresVirtual()
       .target(MoveTarget.NEAR_ENEMY)
       .unimplemented(),
@@ -7054,8 +7197,10 @@ export function initMoves() {
       .attr(CopyMoveAttr)
       .ignoresVirtual(),
     new StatusMove(Moves.POWER_SWAP, Type.PSYCHIC, -1, 10, 100, 0, 4)
+      .ignoresSubstitute()
       .unimplemented(),
     new StatusMove(Moves.GUARD_SWAP, Type.PSYCHIC, -1, 10, 100, 0, 4)
+      .ignoresSubstitute()
       .unimplemented(),
     new AttackMove(Moves.PUNISHMENT, Type.DARK, MoveCategory.PHYSICAL, -1, 100, 5, -1, 0, 4)
       .makesContact(true)
@@ -7070,6 +7215,7 @@ export function initMoves() {
       .attr(AddArenaTrapTagAttr, ArenaTagType.TOXIC_SPIKES)
       .target(MoveTarget.ENEMY_SIDE),
     new StatusMove(Moves.HEART_SWAP, Type.PSYCHIC, -1, 10, -1, 0, 4)
+      .ignoresSubstitute()
       .attr(SwapStatsAttr),
     new SelfStatusMove(Moves.AQUA_RING, Type.WATER, -1, 20, -1, 0, 4)
       .attr(AddBattlerTagAttr, BattlerTagType.AQUA_RING, true, true),
@@ -7352,6 +7498,7 @@ export function initMoves() {
       .attr(AbilityGiveAttr),
     new StatusMove(Moves.AFTER_YOU, Type.NORMAL, -1, 15, -1, 0, 5)
       .ignoresProtect()
+      .ignoresSubstitute()
       .unimplemented(),
     new AttackMove(Moves.ROUND, Type.NORMAL, MoveCategory.SPECIAL, 60, 100, 15, -1, 0, 5)
       .soundBased()
@@ -7389,6 +7536,7 @@ export function initMoves() {
     new AttackMove(Moves.SKY_DROP, Type.FLYING, MoveCategory.PHYSICAL, 60, 100, 10, -1, 0, 5)
       .attr(ChargeAttr, ChargeAnim.SKY_DROP_CHARGING, i18next.t("moveTriggers:tookTargetIntoSky", {pokemonName: "{USER}", targetName: "{TARGET}"}), BattlerTagType.FLYING) // TODO: Add 2nd turn message
       .condition(failOnGravityCondition)
+      .condition((user, target, move) => !target.getTag(BattlerTagType.SUBSTITUTE))
       .ignoresVirtual(),
     new SelfStatusMove(Moves.SHIFT_GEAR, Type.STEEL, -1, 10, -1, 0, 5)
       .attr(StatChangeAttr, BattleStat.ATK, 1, true)
@@ -7403,6 +7551,7 @@ export function initMoves() {
     new AttackMove(Moves.ACROBATICS, Type.FLYING, MoveCategory.PHYSICAL, 55, 100, 15, -1, 0, 5)
       .attr(MovePowerMultiplierAttr, (user, target, move) => Math.max(1, 2 - 0.2 * user.getHeldItems().filter(i => i.isTransferrable).reduce((v, m) => v + m.stackCount, 0))),
     new StatusMove(Moves.REFLECT_TYPE, Type.NORMAL, -1, 15, -1, 0, 5)
+      .ignoresSubstitute()
       .attr(CopyTypeAttr),
     new AttackMove(Moves.RETALIATE, Type.NORMAL, MoveCategory.PHYSICAL, 70, 100, 5, -1, 0, 5)
       .partial(),
@@ -7411,6 +7560,7 @@ export function initMoves() {
       .attr(SacrificialAttrOnHit),
     new StatusMove(Moves.BESTOW, Type.NORMAL, -1, 15, -1, 0, 5)
       .ignoresProtect()
+      .ignoresSubstitute()
       .unimplemented(),
     new AttackMove(Moves.INFERNO, Type.FIRE, MoveCategory.SPECIAL, 100, 50, 5, 100, 0, 5)
       .attr(StatusEffectAttr, StatusEffect.BURN),
@@ -7616,12 +7766,14 @@ export function initMoves() {
       .soundBased()
       .target(MoveTarget.ALL_NEAR_OTHERS),
     new StatusMove(Moves.FAIRY_LOCK, Type.FAIRY, -1, 10, -1, 0, 6)
+      .ignoresSubstitute()
       .target(MoveTarget.BOTH_SIDES)
       .unimplemented(),
     new SelfStatusMove(Moves.KINGS_SHIELD, Type.STEEL, -1, 10, -1, 4, 6)
       .attr(ProtectAttr, BattlerTagType.KINGS_SHIELD),
     new StatusMove(Moves.PLAY_NICE, Type.NORMAL, -1, 20, -1, 0, 6)
-      .attr(StatChangeAttr, BattleStat.ATK, -1),
+      .attr(StatChangeAttr, BattleStat.ATK, -1)
+      .ignoresSubstitute(),
     new StatusMove(Moves.CONFIDE, Type.NORMAL, -1, 20, -1, 0, 6)
       .attr(StatChangeAttr, BattleStat.SPATK, -1)
       .soundBased(),
@@ -7634,7 +7786,8 @@ export function initMoves() {
       .attr(HealStatusEffectAttr, false, StatusEffect.FREEZE)
       .attr(StatusEffectAttr, StatusEffect.BURN),
     new AttackMove(Moves.HYPERSPACE_HOLE, Type.PSYCHIC, MoveCategory.SPECIAL, 80, -1, 5, -1, 0, 6)
-      .ignoresProtect(),
+      .ignoresProtect()
+      .ignoresSubstitute(),
     new AttackMove(Moves.WATER_SHURIKEN, Type.WATER, MoveCategory.SPECIAL, 15, 100, 20, -1, 1, 6)
       .attr(MultiHitAttr)
       .attr(WaterShurikenPowerAttr)
@@ -7645,6 +7798,7 @@ export function initMoves() {
       .attr(ProtectAttr, BattlerTagType.SPIKY_SHIELD),
     new StatusMove(Moves.AROMATIC_MIST, Type.FAIRY, -1, 20, -1, 0, 6)
       .attr(StatChangeAttr, BattleStat.SPDEF, 1)
+      .ignoresSubstitute()
       .target(MoveTarget.NEAR_ALLY),
     new StatusMove(Moves.EERIE_IMPULSE, Type.ELECTRIC, 100, 15, -1, 0, 6)
       .attr(StatChangeAttr, BattleStat.SPATK, -2),
@@ -7652,6 +7806,7 @@ export function initMoves() {
       .attr(StatChangeAttr, [ BattleStat.ATK, BattleStat.SPATK, BattleStat.SPD ], -1, false, (user, target, move) => target.status?.effect === StatusEffect.POISON || target.status?.effect === StatusEffect.TOXIC)
       .target(MoveTarget.ALL_NEAR_ENEMIES),
     new StatusMove(Moves.POWDER, Type.BUG, 100, 20, -1, 1, 6)
+      .ignoresSubstitute()
       .powderMove()
       .unimplemented(),
     new SelfStatusMove(Moves.GEOMANCY, Type.FAIRY, -1, 10, -1, 0, 6)
@@ -7660,6 +7815,7 @@ export function initMoves() {
       .ignoresVirtual(),
     new StatusMove(Moves.MAGNETIC_FLUX, Type.ELECTRIC, -1, 20, -1, 0, 6)
       .attr(StatChangeAttr, [ BattleStat.DEF, BattleStat.SPDEF ], 1, false, (user, target, move) => !![ Abilities.PLUS, Abilities.MINUS].find(a => target.hasAbility(a, false)))
+      .ignoresSubstitute()
       .target(MoveTarget.USER_AND_ALLIES)
       .condition((user, target, move) => !![ user, user.getAlly() ].filter(p => p?.isActive()).find(p => !![ Abilities.PLUS, Abilities.MINUS].find(a => p.hasAbility(a, false)))),
     new StatusMove(Moves.HAPPY_HOUR, Type.NORMAL, -1, 30, -1, 0, 6) // No animation
@@ -7672,6 +7828,7 @@ export function initMoves() {
       .target(MoveTarget.ALL_NEAR_ENEMIES),
     new SelfStatusMove(Moves.CELEBRATE, Type.NORMAL, -1, 40, -1, 0, 6),
     new StatusMove(Moves.HOLD_HANDS, Type.NORMAL, -1, 40, -1, 0, 6)
+      .ignoresSubstitute()
       .target(MoveTarget.NEAR_ALLY),
     new StatusMove(Moves.BABY_DOLL_EYES, Type.FAIRY, 100, 30, -1, 1, 6)
       .attr(StatChangeAttr, BattleStat.ATK, -1),
@@ -7717,6 +7874,7 @@ export function initMoves() {
       .attr(StatChangeAttr, [ BattleStat.DEF, BattleStat.SPDEF ], -1, true),
     new AttackMove(Moves.HYPERSPACE_FURY, Type.DARK, MoveCategory.PHYSICAL, 100, -1, 5, -1, 0, 6)
       .attr(StatChangeAttr, BattleStat.DEF, -1, true)
+      .ignoresSubstitute()
       .makesContact(false)
       .ignoresProtect(),
     /* Unused */
@@ -7875,6 +8033,7 @@ export function initMoves() {
       .attr(AddBattlerTagAttr, BattlerTagType.ALWAYS_CRIT, true, false),
     new StatusMove(Moves.GEAR_UP, Type.STEEL, -1, 20, -1, 0, 7)
       .attr(StatChangeAttr, [ BattleStat.ATK, BattleStat.SPATK ], 1, false, (user, target, move) => !![ Abilities.PLUS, Abilities.MINUS].find(a => target.hasAbility(a, false)))
+      .ignoresSubstitute()
       .target(MoveTarget.USER_AND_ALLIES)
       .condition((user, target, move) => !![ user, user.getAlly() ].filter(p => p?.isActive()).find(p => !![ Abilities.PLUS, Abilities.MINUS].find(a => p.hasAbility(a, false)))),
     new AttackMove(Moves.THROAT_CHOP, Type.DARK, MoveCategory.PHYSICAL, 80, 100, 15, 100, 0, 7)
@@ -7904,6 +8063,7 @@ export function initMoves() {
         user.scene.queueMessage(i18next.t("moveTriggers:burnedItselfOut", {pokemonName: getPokemonNameWithAffix(user)}));
       }),
     new StatusMove(Moves.SPEED_SWAP, Type.PSYCHIC, -1, 10, -1, 0, 7)
+      .ignoresSubstitute()
       .unimplemented(),
     new AttackMove(Moves.SMART_STRIKE, Type.STEEL, MoveCategory.PHYSICAL, 70, -1, 10, -1, 0, 7),
     new StatusMove(Moves.PURIFY, Type.POISON, -1, 20, -1, 0, 7)
@@ -7921,6 +8081,7 @@ export function initMoves() {
     new AttackMove(Moves.TROP_KICK, Type.GRASS, MoveCategory.PHYSICAL, 70, 100, 15, 100, 0, 7)
       .attr(StatChangeAttr, BattleStat.ATK, -1),
     new StatusMove(Moves.INSTRUCT, Type.PSYCHIC, -1, 15, -1, 0, 7)
+      .ignoresSubstitute()
       .unimplemented(),
     new AttackMove(Moves.BEAK_BLAST, Type.FLYING, MoveCategory.PHYSICAL, 100, 100, 15, -1, 5, 7)
       .attr(ChargeAttr, ChargeAnim.BEAK_BLAST_CHARGING, i18next.t("moveTriggers:startedHeatingUpBeak", {pokemonName: "{USER}"}), undefined, false, true, -3)
@@ -7987,6 +8148,7 @@ export function initMoves() {
     new AttackMove(Moves.PRISMATIC_LASER, Type.PSYCHIC, MoveCategory.SPECIAL, 160, 100, 10, -1, 0, 7)
       .attr(RechargeAttr),
     new AttackMove(Moves.SPECTRAL_THIEF, Type.GHOST, MoveCategory.PHYSICAL, 90, 100, 10, -1, 0, 7)
+      .ignoresSubstitute()
       .partial(),
     new AttackMove(Moves.SUNSTEEL_STRIKE, Type.STEEL, MoveCategory.PHYSICAL, 100, 100, 5, -1, 0, 7)
       .ignoresAbilities()
@@ -8646,7 +8808,8 @@ export function initMoves() {
       .target(MoveTarget.BOTH_SIDES),
     new SelfStatusMove(Moves.TIDY_UP, Type.NORMAL, -1, 10, -1, 0, 9)
       .attr(StatChangeAttr, [ BattleStat.ATK, BattleStat.SPD ], 1, true, null, true, true)
-      .attr(RemoveArenaTrapAttr, true),
+      .attr(RemoveArenaTrapAttr, true)
+      .attr(RemoveAllSubstitutesAttr),
     new StatusMove(Moves.SNOWSCAPE, Type.ICE, -1, 10, -1, 0, 9)
       .attr(WeatherChangeAttr, WeatherType.SNOW)
       .target(MoveTarget.BOTH_SIDES),
diff --git a/src/enums/battler-tag-type.ts b/src/enums/battler-tag-type.ts
index 52f6402861e..8c9ce65b568 100644
--- a/src/enums/battler-tag-type.ts
+++ b/src/enums/battler-tag-type.ts
@@ -63,5 +63,6 @@ export enum BattlerTagType {
   ICE_FACE = "ICE_FACE",
   STOCKPILING = "STOCKPILING",
   RECEIVE_DOUBLE_DAMAGE = "RECEIVE_DOUBLE_DAMAGE",
-  ALWAYS_GET_HIT = "ALWAYS_GET_HIT"
+  ALWAYS_GET_HIT = "ALWAYS_GET_HIT",
+  SUBSTITUTE = "SUBSTITUTE"
 }
diff --git a/src/enums/pokemon-anim-type.ts b/src/enums/pokemon-anim-type.ts
new file mode 100644
index 00000000000..5a0a0c2f622
--- /dev/null
+++ b/src/enums/pokemon-anim-type.ts
@@ -0,0 +1,16 @@
+export enum PokemonAnimType {
+  /**
+   * Adds a Substitute doll to the field in front of a Pokemon.
+   * The Pokemon then moves "out of focus" and becomes semi-transparent.
+   */
+  SUBSTITUTE_ADD,
+  /** Brings a Pokemon with a Substitute "into focus" before using a move. */
+  SUBSTITUTE_PRE_MOVE,
+  /** Brings a Pokemon with a Substitute "out of focus" after using a move. */
+  SUBSTITUTE_POST_MOVE,
+  /**
+   * Removes a Pokemon's Substitute doll from the field.
+   * The Pokemon then moves back to its original position.
+   */
+  SUBSTITUTE_REMOVE
+}
diff --git a/src/field/pokemon.ts b/src/field/pokemon.ts
index 71e89d60cbd..bc2c0f9056b 100644
--- a/src/field/pokemon.ts
+++ b/src/field/pokemon.ts
@@ -19,7 +19,7 @@ import { pokemonEvolutions, pokemonPrevolutions, SpeciesFormEvolution, SpeciesEv
 import { reverseCompatibleTms, tmSpecies, tmPoolTiers } from "../data/tms";
 import { DamagePhase, FaintPhase, LearnMovePhase, MoveEffectPhase, ObtainStatusEffectPhase, StatChangePhase, SwitchSummonPhase, ToggleDoublePositionPhase, MoveEndPhase } from "../phases";
 import { BattleStat } from "../data/battle-stat";
-import { BattlerTag, BattlerTagLapseType, EncoreTag, GroundedTag, HighestStatBoostTag, TypeImmuneTag, getBattlerTag, SemiInvulnerableTag, TypeBoostTag } from "../data/battler-tags";
+import { BattlerTag, BattlerTagLapseType, EncoreTag, GroundedTag, HighestStatBoostTag, SubstituteTag, TypeImmuneTag, getBattlerTag, SemiInvulnerableTag, TypeBoostTag } from "../data/battler-tags";
 import { WeatherType } from "../data/weather";
 import { TempBattleStat } from "../data/temp-battle-stat";
 import { ArenaTagSide, WeakenMoveScreenTag } from "../data/arena-tag";
@@ -51,6 +51,7 @@ import { Biome } from "#enums/biome";
 import { Moves } from "#enums/moves";
 import { Species } from "#enums/species";
 import { getPokemonNameWithAffix } from "#app/messages.js";
+import { PokemonAnimType } from "#app/enums/pokemon-anim-type.js";
 
 export enum FieldPosition {
   CENTER,
@@ -547,6 +548,23 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
     return 1;
   }
 
+  /** Resets the pokemon's field sprite properties, including position, alpha, and scale */
+  resetSprite(): void {
+    // Resetting properties should not be shown on the field
+    this.setVisible(false);
+
+    // Reset field position
+    this.setFieldPosition(FieldPosition.CENTER);
+    if (this.isOffsetBySubstitute()) {
+      this.x -= this.getSubstituteOffset()[0];
+      this.y -= this.getSubstituteOffset()[1];
+    }
+
+    // Reset sprite display properties
+    this.setAlpha(1);
+    this.setScale(this.getSpriteScale());
+  }
+
   getHeldItems(): PokemonHeldItemModifier[] {
     if (!this.scene) {
       return [];
@@ -621,6 +639,47 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
     }
   }
 
+  /**
+   * Returns the Pokemon's offset from its current field position in the event that
+   * it has a Substitute doll in effect. The offset is returned in `[ x, y ]` format.
+   * @see {@linkcode SubstituteTag}
+   * @see {@linkcode getFieldPositionOffset}
+   */
+  getSubstituteOffset(): [ number, number ] {
+    return this.isPlayer() ? [-30, 10] : [30, -10];
+  }
+
+  /**
+   * Returns whether or not the Pokemon's position on the field is offset because
+   * the Pokemon has a Substitute active.
+   * @see {@linkcode SubstituteTag}
+   */
+  isOffsetBySubstitute(): boolean {
+    const substitute = this.getTag(SubstituteTag);
+    if (!!substitute) {
+      if (substitute.sprite === undefined) {
+        return false;
+      }
+
+      // During the Pokemon's MoveEffect phase, the offset is removed to put the Pokemon "in focus"
+      const currentPhase = this.scene.getCurrentPhase();
+      if (currentPhase instanceof MoveEffectPhase && currentPhase.getPokemon() === this) {
+        return false;
+      }
+      return true;
+    } else {
+      return false;
+    }
+  }
+
+  /** If this Pokemon has a Substitute on the field, removes its sprite from the field. */
+  destroySubstitute(): void {
+    const substitute = this.getTag(SubstituteTag);
+    if (!!substitute && !!substitute.sprite) {
+      substitute.sprite.destroy();
+    }
+  }
+
   setFieldPosition(fieldPosition: FieldPosition, duration?: integer): Promise<void> {
     return new Promise(resolve => {
       if (fieldPosition === this.fieldPosition) {
@@ -2069,6 +2128,13 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
         const destinyTag = this.getTag(BattlerTagType.DESTINY_BOND);
 
         if (damage.value) {
+          this.lapseTags(BattlerTagLapseType.HIT);
+
+          const substitute = this.getTag(SubstituteTag);
+          if (!!substitute && !move.canIgnoreSubstitute(source)) {
+            substitute.hp -= damage.value;
+            damage.value = 0;
+          }
           if (this.isFullHp()) {
             applyPreDefendAbAttrs(PreDefendFullHpEndureAbAttr, this, source, move, cancelled, damage);
           } else if (!this.isPlayer() && damage.value >= this.hp) {
@@ -2126,6 +2192,7 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
           // set splice index here, so future scene queues happen before FaintedPhase
           this.scene.setPhaseQueueSplice();
           this.scene.unshiftPhase(new FaintPhase(this.scene, this.getBattlerIndex(), isOneHitKo));
+          this.destroySubstitute();
           this.resetSummonData();
         }
 
@@ -2139,6 +2206,9 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
       if (!typeless) {
         applyPreDefendAbAttrs(TypeImmunityAbAttr, this, source, move, cancelled, typeMultiplier);
       }
+      if (!!this.getTag(SubstituteTag) && !move.canIgnoreSubstitute(source)) {
+        cancelled.value = true;
+      }
       if (!cancelled.value) {
         applyPreDefendAbAttrs(MoveImmunityAbAttr, this, source, move, cancelled, typeMultiplier);
         defendingSidePlayField.forEach((p) => applyPreDefendAbAttrs(FieldPriorityMoveImmunityAbAttr, p, source, move, cancelled, typeMultiplier));
@@ -2193,6 +2263,7 @@ 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.resetSummonData();
     }
 
@@ -2765,6 +2836,11 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
           this.summonData[k] = this.summonDataPrimer[k];
         }
       }
+      // If this Pokemon has a Substitute when loading in, play an animation to add its sprite
+      if (!!this.getTag(SubstituteTag)) {
+        this.scene.triggerPokemonBattleAnim(this, PokemonAnimType.SUBSTITUTE_ADD);
+        this.getTag(SubstituteTag).sourceInFocus = false;
+      }
       this.summonDataPrimer = null;
     }
     this.updateInfo();
diff --git a/src/locales/de/battle.ts b/src/locales/de/battle.ts
index a9686da7524..f5981120c66 100644
--- a/src/locales/de/battle.ts
+++ b/src/locales/de/battle.ts
@@ -155,5 +155,8 @@ export const battle: SimpleTranslationEntries = {
   "battlerTagsSaltCuredLapse": "{{pokemonNameWithAffix}} wurde durch {{moveName}} verletzt!",
   "battlerTagsCursedOnAdd": "{{pokemonNameWithAffix}} nimmt einen Teil seiner KP und legt einen Fluch auf {{pokemonName}}!",
   "battlerTagsCursedLapse": "{{pokemonNameWithAffix}} wurde durch den Fluch verletzt!",
-  "battlerTagsStockpilingOnAdd": "{{pokemonNameWithAffix}} stockpiled {{stockpiledCount}}!"
+  "battlerTagsStockpilingOnAdd": "{{pokemonNameWithAffix}} stockpiled {{stockpiledCount}}!",
+  "battlerTagsSubstituteOnAdd": "Ein Delegator von {{pokemonNameWithAffix}} ist erschienen!",
+  "battlerTagsSubstituteOnHit": "Der Delegator steckt den Schlag für {{pokemonNameWithAffix}} ein!",
+  "battlerTagsSubstituteOnRemove": "Der Delegator von {{pokemonNameWithAffix}} hört auf zu wirken!"
 } as const;
diff --git a/src/locales/en/battle.ts b/src/locales/en/battle.ts
index 12a0f2c99c6..17b3e37581f 100644
--- a/src/locales/en/battle.ts
+++ b/src/locales/en/battle.ts
@@ -155,5 +155,8 @@ export const battle: SimpleTranslationEntries = {
   "battlerTagsSaltCuredLapse": "{{pokemonNameWithAffix}} is hurt by {{moveName}}!",
   "battlerTagsCursedOnAdd": "{{pokemonNameWithAffix}} cut its own HP and put a curse on the {{pokemonName}}!",
   "battlerTagsCursedLapse": "{{pokemonNameWithAffix}} is afflicted by the Curse!",
-  "battlerTagsStockpilingOnAdd": "{{pokemonNameWithAffix}} stockpiled {{stockpiledCount}}!"
+  "battlerTagsStockpilingOnAdd": "{{pokemonNameWithAffix}} stockpiled {{stockpiledCount}}!",
+  "battlerTagsSubstituteOnAdd": "{{pokemonNameWithAffix}} put in a substitute!",
+  "battlerTagsSubstituteOnHit": "The substitute took damage for {{pokemonNameWithAffix}}!",
+  "battlerTagsSubstituteOnRemove": "{{pokemonNameWithAffix}}'s substitute faded!"
 } as const;
diff --git a/src/locales/es/battle.ts b/src/locales/es/battle.ts
index 7f29060c5d3..21080569cde 100644
--- a/src/locales/es/battle.ts
+++ b/src/locales/es/battle.ts
@@ -155,5 +155,8 @@ export const battle: SimpleTranslationEntries = {
   "battlerTagsSaltCuredLapse": "{{pokemonNameWithAffix}} is hurt by {{moveName}}!",
   "battlerTagsCursedOnAdd": "{{pokemonNameWithAffix}} cut its own HP and put a curse on the {{pokemonName}}!",
   "battlerTagsCursedLapse": "{{pokemonNameWithAffix}} is afflicted by the Curse!",
-  "battlerTagsStockpilingOnAdd": "{{pokemonNameWithAffix}} stockpiled {{stockpiledCount}}!"
+  "battlerTagsStockpilingOnAdd": "{{pokemonNameWithAffix}} stockpiled {{stockpiledCount}}!",
+  "battlerTagsSubstituteOnAdd": "¡{{pokemonNameWithAffix}} creó un sustituto!",
+  "battlerTagsSubstituteOnHit": "¡El sustituto recibe daño en lugar del {{pokemonNameWithAffix}}!",
+  "battlerTagsSubstituteOnRemove": "¡El sustituto del {{pokemonNameWithAffix}} se debilitó!"
 } as const;
diff --git a/src/locales/fr/battle.ts b/src/locales/fr/battle.ts
index 861dc6fd73c..00bc3b7f1e9 100644
--- a/src/locales/fr/battle.ts
+++ b/src/locales/fr/battle.ts
@@ -155,5 +155,8 @@ export const battle: SimpleTranslationEntries = {
   "battlerTagsSaltCuredLapse": "{{pokemonNameWithAffix}} est blessé\npar la capacité {{moveName}} !",
   "battlerTagsCursedOnAdd": "{{pokemonNameWithAffix}} sacrifie des PV\net lance une malédiction sur {{pokemonName}} !",
   "battlerTagsCursedLapse": "{{pokemonNameWithAffix}} est touché par la malédiction !",
-  "battlerTagsStockpilingOnAdd": "{{pokemonNameWithAffix}} stockpiled {{stockpiledCount}}!"
+  "battlerTagsStockpilingOnAdd": "{{pokemonNameWithAffix}} stockpiled {{stockpiledCount}}!",
+  "battlerTagsSubstituteOnAdd": "{{pokemonNameWithAffix}}\ncrée un clone !",
+  "battlerTagsSubstituteOnHit": "Le clone subit les dégâts à la place\nde {{pokemonNameWithAffix}} !",
+  "battlerTagsSubstituteOnRemove": "Le clone de {{pokemonNameWithAffix}}\ndisparait…"
 } as const;
diff --git a/src/locales/it/battle.ts b/src/locales/it/battle.ts
index 954f52e4a7f..5497e1d32f0 100644
--- a/src/locales/it/battle.ts
+++ b/src/locales/it/battle.ts
@@ -155,5 +155,8 @@ export const battle: SimpleTranslationEntries = {
   "battlerTagsSaltCuredLapse": "{{pokemonNameWithAffix}} viene colpito da {{moveName}}!",
   "battlerTagsCursedOnAdd": "{{pokemonNameWithAffix}} ha sacrificato metà dei suoi PS per\nlanciare una maledizione su {{pokemonName}}!",
   "battlerTagsCursedLapse": "{{pokemonNameWithAffix}} subisce la maledizione!",
-  "battlerTagsStockpilingOnAdd": "{{pokemonNameWithAffix}} ha usato Accumulo per la\n{{stockpiledCount}}ª volta!"
+  "battlerTagsStockpilingOnAdd": "{{pokemonNameWithAffix}} ha usato Accumulo per la\n{{stockpiledCount}}ª volta!",
+  "battlerTagsSubstituteOnAdd": "Appare un sostituto di {{pokemonNameWithAffix}}!",
+  "battlerTagsSubstituteOnHit": "Il sostituto viene colpito al posto di {{pokemonNameWithAffix}}!",
+  "battlerTagsSubstituteOnRemove": "Il sostituto di {{pokemonNameWithAffix}} svanisce!"
 } as const;
diff --git a/src/locales/ko/battle.ts b/src/locales/ko/battle.ts
index 10f3e1b5853..2b76ea2f97f 100644
--- a/src/locales/ko/battle.ts
+++ b/src/locales/ko/battle.ts
@@ -156,4 +156,7 @@ export const battle: SimpleTranslationEntries = {
   "battlerTagsCursedOnAdd": "{{pokemonNameWithAffix}}[[는]] 자신의 체력을 깎아서\n{{pokemonName}}에게 저주를 걸었다!",
   "battlerTagsCursedLapse": "{{pokemonNameWithAffix}}[[는]]\n저주받고 있다!",
   "battlerTagsStockpilingOnAdd": "{{pokemonNameWithAffix}}[[는]]\n{{stockpiledCount}}개 비축했다!",
+  "battlerTagsSubstituteOnAdd": "{{pokemonNameWithAffix}}의\n대타가 나타났다!",
+  "battlerTagsSubstituteOnHit": "{{pokemonNameWithAffix}}[[를]] 대신하여\n대타가 공격을 받았다!",
+  "battlerTagsSubstituteOnRemove": "{{pokemonNameWithAffix}}의\n대타는 사라져 버렸다..."
 } as const;
diff --git a/src/locales/pt_BR/battle.ts b/src/locales/pt_BR/battle.ts
index 824b069f0a4..3682ebf810a 100644
--- a/src/locales/pt_BR/battle.ts
+++ b/src/locales/pt_BR/battle.ts
@@ -156,4 +156,7 @@ export const battle: SimpleTranslationEntries = {
   "battlerTagsCursedOnAdd": "{{pokemonNameWithAffix}} cortou seus PS pela metade e amaldiçoou {{pokemonName}}!",
   "battlerTagsCursedLapse": "{{pokemonNameWithAffix}} foi ferido pelo Curse!",
   "battlerTagsStockpilingOnAdd": "{{pokemonNameWithAffix}} estocou {{stockpiledCount}}!",
+  "battlerTagsSubstituteOnAdd": "{{pokemonNameWithAffix}} colocou um substituto!",
+  "battlerTagsSubstituteOnHit": "O substituto tomou o dano pelo {{pokemonNameWithAffix}}!",
+  "battlerTagsSubstituteOnRemove": "O substituto de {{pokemonNameWithAffix}} desbotou!"
 } as const;
diff --git a/src/locales/zh_CN/battle.ts b/src/locales/zh_CN/battle.ts
index b07cb79e258..2bddd3e76b7 100644
--- a/src/locales/zh_CN/battle.ts
+++ b/src/locales/zh_CN/battle.ts
@@ -147,5 +147,8 @@ export const battle: SimpleTranslationEntries = {
   "battlerTagsSaltCuredLapse": "{{pokemonNameWithAffix}}\n受到了{{moveName}}的伤害！",
   "battlerTagsCursedOnAdd": "{{pokemonNameWithAffix}}削减了自己的体力，\n并诅咒了{{pokemonName}}！",
   "battlerTagsCursedLapse": "{{pokemonNameWithAffix}}\n正受到诅咒！",
-  "battlerTagsStockpilingOnAdd": "{{pokemonNameWithAffix}}蓄力了{{stockpiledCount}}次！"
+  "battlerTagsStockpilingOnAdd": "{{pokemonNameWithAffix}}蓄力了{{stockpiledCount}}次！",
+  "battlerTagsSubstituteOnAdd": "{{pokemonNameWithAffix}}的\n替身出现了！",
+  "battlerTagsSubstituteOnHit": "替身代替{{pokemonNameWithAffix}}\n承受了攻击！",
+  "battlerTagsSubstituteOnRemove": "{{pokemonNameWithAffix}}的\n替身消失了……"
 } as const;
diff --git a/src/locales/zh_TW/battle.ts b/src/locales/zh_TW/battle.ts
index 4673474d313..0cc7470e0ac 100644
--- a/src/locales/zh_TW/battle.ts
+++ b/src/locales/zh_TW/battle.ts
@@ -144,5 +144,8 @@ export const battle: SimpleTranslationEntries = {
   "battlerTagsSaltCuredLapse": "{{pokemonNameWithAffix}} 受到了{{moveName}}的傷害！",
   "battlerTagsCursedOnAdd": "{{pokemonNameWithAffix}}削減了自己的體力，並詛咒了{{pokemonName}}！",
   "battlerTagsCursedLapse": "{{pokemonNameWithAffix}}正受到詛咒！",
-  "battlerTagsStockpilingOnAdd": "{{pokemonNameWithAffix}} stockpiled {{stockpiledCount}}!"
+  "battlerTagsStockpilingOnAdd": "{{pokemonNameWithAffix}} stockpiled {{stockpiledCount}}!",
+  "battlerTagsSubstituteOnAdd": "{{pokemonNameWithAffix}}的\n替身出現了！",
+  "battlerTagsSubstituteOnHit": "替身代替{{pokemonNameWithAffix}}承受了攻擊！",
+  "battlerTagsSubstituteOnRemove": "{{pokemonNameWithAffix}}的\n替身消失了……"
 } as const;
diff --git a/src/phases.ts b/src/phases.ts
index d77ff7c29df..dd8bdcfe8e1 100644
--- a/src/phases.ts
+++ b/src/phases.ts
@@ -19,7 +19,7 @@ import { biomeLinks, getBiomeName } from "./data/biomes";
 import { ModifierTier } from "./modifier/modifier-tier";
 import { FusePokemonModifierType, ModifierPoolType, ModifierType, ModifierTypeFunc, ModifierTypeOption, PokemonModifierType, PokemonMoveModifierType, PokemonPpRestoreModifierType, PokemonPpUpModifierType, RememberMoveModifierType, TmModifierType, getDailyRunStarterModifiers, getEnemyBuffModifierForWave, getModifierType, getPlayerModifierTypeOptions, getPlayerShopModifierTypeOptionsForWave, modifierTypes, regenerateModifierPoolThresholds } from "./modifier/modifier-type";
 import SoundFade from "phaser3-rex-plugins/plugins/soundfade";
-import { BattlerTagLapseType, CenterOfAttentionTag, EncoreTag, ProtectedTag, SemiInvulnerableTag, TrappedTag } from "./data/battler-tags";
+import { BattlerTagLapseType, CenterOfAttentionTag, EncoreTag, ProtectedTag, SemiInvulnerableTag, SubstituteTag, TrappedTag } from "./data/battler-tags";
 import { getPokemonNameWithAffix } from "./messages";
 import { Starter } from "./ui/starter-select-ui-handler";
 import { Gender } from "./data/gender";
@@ -1601,6 +1601,16 @@ export class SwitchSummonPhase extends SummonPhase {
 
     if (!this.batonPass) {
       (this.player ? this.scene.getEnemyField() : this.scene.getPlayerField()).forEach(enemyPokemon => enemyPokemon.removeTagsBySourceId(pokemon.id));
+      const substitute = pokemon.getTag(SubstituteTag);
+      if (!!substitute) {
+        this.scene.tweens.add({
+          targets: substitute.sprite,
+          duration: 250,
+          scale: substitute.sprite.scale * 0.5,
+          ease: "Sine.easeIn",
+          onComplete: () => substitute.sprite.destroy()
+        });
+      }
     }
 
     this.scene.ui.showText(this.player ?
@@ -1619,7 +1629,7 @@ export class SwitchSummonPhase extends SummonPhase {
       ease: "Sine.easeIn",
       scale: 0.5,
       onComplete: () => {
-        pokemon.setVisible(false);
+        pokemon.resetSprite();
         this.scene.field.remove(pokemon);
         this.scene.triggerPokemonFormChange(pokemon, SpeciesFormChangeActiveTrigger, true);
         this.scene.time.delayedCall(750, () => this.switchAndSummon());
@@ -1653,8 +1663,18 @@ export class SwitchSummonPhase extends SummonPhase {
             pokemonName: getPokemonNameWithAffix(this.getPokemon())
           })
         );
-        // Ensure improperly persisted summon data (such as tags) is cleared upon switching
-        if (!this.batonPass) {
+        /**
+         * If this switch is passing a Substitute, make the switched Pokemon match the returned Pokemon's state as it left.
+         * Otherwise, clear any persisting tags on the returned Pokemon.
+         */
+        if (this.batonPass) {
+          const substitute = this.lastPokemon.getTag(SubstituteTag);
+          if (!!substitute) {
+            switchedPokemon.x += switchedPokemon.getSubstituteOffset()[0];
+            switchedPokemon.y += switchedPokemon.getSubstituteOffset()[1];
+            switchedPokemon.setAlpha(0.5);
+          }
+        } else {
           party[this.fieldIndex].resetBattleData();
           party[this.fieldIndex].resetSummonData();
         }
@@ -2571,7 +2591,7 @@ export class CommonAnimPhase extends PokemonPhase {
   }
 
   start() {
-    new CommonBattleAnim(this.anim, this.getPokemon(), this.targetIndex !== undefined ? (this.player ? this.scene.getEnemyField() : this.scene.getPlayerField())[this.targetIndex] : this.getPokemon()).play(this.scene, () => {
+    new CommonBattleAnim(this.anim, this.getPokemon(), this.targetIndex !== undefined ? (this.player ? this.scene.getEnemyField() : this.scene.getPlayerField())[this.targetIndex] : this.getPokemon()).play(this.scene, false, () => {
       this.end();
     });
   }
@@ -2723,6 +2743,8 @@ export class MovePhase extends BattlePhase {
         this.pokemon.pushMoveHistory({ move: Moves.NONE, result: MoveResult.FAIL });
 
         this.pokemon.lapseTags(BattlerTagLapseType.MOVE_EFFECT); // Remove any tags from moves like Fly/Dive/etc.
+        this.pokemon.lapseTags(BattlerTagLapseType.AFTER_MOVE);
+
         moveQueue.shift(); // Remove the second turn of charge moves
         return this.end();
       }
@@ -2742,6 +2764,7 @@ export class MovePhase extends BattlePhase {
         this.pokemon.pushMoveHistory({ move: Moves.NONE, result: MoveResult.FAIL });
 
         this.pokemon.lapseTags(BattlerTagLapseType.MOVE_EFFECT); // Remove any tags from moves like Fly/Dive/etc.
+        this.pokemon.lapseTags(BattlerTagLapseType.AFTER_MOVE);
 
         moveQueue.shift();
         return this.end();
@@ -2952,7 +2975,7 @@ export class MoveEffectPhase extends PokemonPhase {
       const applyAttrs: Promise<void>[] = [];
 
       // Move animation only needs one target
-      new MoveAnim(move.id as Moves, user, this.getTarget()?.getBattlerIndex()).play(this.scene, () => {
+      new MoveAnim(move.id as Moves, user, this.getTarget()?.getBattlerIndex()).play(this.scene, !move.canIgnoreSubstitute(user), () => {
         for (const target of targets) {
           if (!targetHitChecks[target.getBattlerIndex()]) {
             this.stopMultiHit(target);
@@ -2995,7 +3018,7 @@ export class MoveEffectPhase extends PokemonPhase {
                   if (hitResult !== HitResult.NO_EFFECT) {
                     applyFilteredMoveAttrs((attr: MoveAttr) => attr instanceof MoveEffectAttr && (attr as MoveEffectAttr).trigger === MoveEffectTrigger.POST_APPLY
                       && !(attr as MoveEffectAttr).selfTarget && (!attr.firstHitOnly || firstHit) && (!attr.lastHitOnly || lastHit), user, target, this.move.getMove()).then(() => {
-                      if (hitResult < HitResult.NO_EFFECT && !target.hasAbilityWithAttr(IgnoreMoveEffectsAbAttr)) {
+                      if (hitResult < HitResult.NO_EFFECT && !target.hasAbilityWithAttr(IgnoreMoveEffectsAbAttr) && (!target.getTag(BattlerTagType.SUBSTITUTE) || move.canIgnoreSubstitute(user))) {
                         const flinched = new Utils.BooleanHolder(false);
                         user.scene.applyModifiers(FlinchChanceModifier, user.isPlayer(), user, flinched);
                         if (flinched.value) {
@@ -3042,7 +3065,20 @@ export class MoveEffectPhase extends PokemonPhase {
           }
         }
 
-        Promise.allSettled(applyAttrs).then(() => this.end());
+        Promise.allSettled(applyAttrs).then(() => {
+          /**
+           * Remove the target's substitute (if it exists and has expired)
+           * after all targeted effects have applied.
+           * This prevents blocked effects from applying until after this hit resolves.
+           */
+          targets.forEach(target => {
+            const substitute = target.getTag(SubstituteTag);
+            if (!!substitute && substitute.hp <= 0) {
+              target.lapseTag(BattlerTagType.SUBSTITUTE);
+            }
+          });
+          this.end();
+        });
       });
     });
   }
@@ -3203,7 +3239,9 @@ export class MoveAnimTestPhase extends BattlePhase {
     initMoveAnim(this.scene, moveId).then(() => {
       loadMoveAnimAssets(this.scene, [moveId], true)
         .then(() => {
-          new MoveAnim(moveId, player ? this.scene.getPlayerPokemon() : this.scene.getEnemyPokemon(), (player !== (allMoves[moveId] instanceof SelfStatusMove) ? this.scene.getEnemyPokemon() : this.scene.getPlayerPokemon()).getBattlerIndex()).play(this.scene, () => {
+          const user = player ? this.scene.getPlayerPokemon() : this.scene.getEnemyPokemon();
+          const target = (player !== (allMoves[moveId] instanceof SelfStatusMove)) ? this.scene.getEnemyPokemon() : this.scene.getPlayerPokemon();
+          new MoveAnim(moveId, user, target.getBattlerIndex()).play(this.scene, !allMoves[moveId].canIgnoreSubstitute(user), () => {
             if (player) {
               this.playMoveAnim(moveQueue, false);
             } else {
@@ -3542,7 +3580,7 @@ export class ObtainStatusEffectPhase extends PokemonPhase {
           pokemon.status.cureTurn = this.cureTurn;
         }
         pokemon.updateInfo(true);
-        new CommonBattleAnim(CommonAnim.POISON + (this.statusEffect - 1), pokemon).play(this.scene, () => {
+        new CommonBattleAnim(CommonAnim.POISON + (this.statusEffect - 1), pokemon).play(this.scene, false, () => {
           this.scene.queueMessage(getStatusEffectObtainText(this.statusEffect, getPokemonNameWithAffix(pokemon), this.sourceText));
           if (pokemon.status.isPostTurn()) {
             this.scene.pushPhase(new PostTurnStatusEffectPhase(this.scene, this.battlerIndex));
@@ -3590,7 +3628,7 @@ export class PostTurnStatusEffectPhase extends PokemonPhase {
           this.scene.damageNumberHandler.add(this.getPokemon(), pokemon.damage(damage, false, true));
           pokemon.updateInfo();
         }
-        new CommonBattleAnim(CommonAnim.POISON + (pokemon.status.effect - 1), pokemon).play(this.scene, () => this.end());
+        new CommonBattleAnim(CommonAnim.POISON + (pokemon.status.effect - 1), pokemon).play(this.scene, false, () => this.end());
       } else {
         this.end();
       }
@@ -3696,7 +3734,7 @@ export class DamagePhase extends PokemonPhase {
       this.scene.damageNumberHandler.add(this.getPokemon(), this.amount, this.damageResult, this.critical);
     }
 
-    if (this.damageResult !== HitResult.OTHER) {
+    if (this.damageResult !== HitResult.OTHER && this.amount > 0) {
       const flashTimer = this.scene.time.addEvent({
         delay: 100,
         repeat: 5,
@@ -3832,7 +3870,7 @@ export class FaintPhase extends PokemonPhase {
         y: pokemon.y + 150,
         ease: "Sine.easeIn",
         onComplete: () => {
-          pokemon.setVisible(false);
+          pokemon.resetSprite();
           pokemon.y -= 150;
           pokemon.trySetStatus(StatusEffect.FAINT);
           if (pokemon.isPlayer()) {
@@ -5495,7 +5533,7 @@ export class ScanIvsPhase extends PokemonPhase {
       this.scene.ui.setMode(Mode.CONFIRM, () => {
         this.scene.ui.setMode(Mode.MESSAGE);
         this.scene.ui.clearText();
-        new CommonBattleAnim(CommonAnim.LOCK_ON, pokemon, pokemon).play(this.scene, () => {
+        new CommonBattleAnim(CommonAnim.LOCK_ON, pokemon, pokemon).play(this.scene, false, () => {
           this.scene.ui.getMessageHandler().promptIvs(pokemon.id, pokemon.ivs, this.shownIvs).then(() => this.end());
         });
       }, () => {
diff --git a/src/pokemon-anim-phase.ts b/src/pokemon-anim-phase.ts
new file mode 100644
index 00000000000..722300d6d0d
--- /dev/null
+++ b/src/pokemon-anim-phase.ts
@@ -0,0 +1,237 @@
+import BattleScene from "./battle-scene";
+import { SubstituteTag } from "./data/battler-tags";
+import { PokemonAnimType } from "./enums/pokemon-anim-type";
+import Pokemon from "./field/pokemon";
+import { BattlePhase } from "./phases";
+
+
+
+export class PokemonAnimPhase extends BattlePhase {
+  /** The type of animation to play in this phase */
+  private key: PokemonAnimType;
+  /** The Pokemon to which this animation applies */
+  private pokemon: Pokemon;
+  /** Any other field sprites affected by this animation */
+  private fieldAssets: Phaser.GameObjects.Sprite[];
+
+  constructor(scene: BattleScene, key: PokemonAnimType, pokemon: Pokemon, fieldAssets?: Phaser.GameObjects.Sprite[]) {
+    super(scene);
+
+    this.key = key;
+    this.pokemon = pokemon;
+    this.fieldAssets = fieldAssets ?? [];
+  }
+
+  start(): void {
+    super.start();
+
+    switch (this.key) {
+    case PokemonAnimType.SUBSTITUTE_ADD:
+      this.doSubstituteAddAnim();
+      break;
+    case PokemonAnimType.SUBSTITUTE_PRE_MOVE:
+      this.doSubstitutePreMoveAnim();
+      break;
+    case PokemonAnimType.SUBSTITUTE_POST_MOVE:
+      this.doSubstitutePostMoveAnim();
+      break;
+    case PokemonAnimType.SUBSTITUTE_REMOVE:
+      this.doSubstituteRemoveAnim();
+      break;
+    default:
+      this.end();
+    }
+  }
+
+  doSubstituteAddAnim(): void {
+    const substitute = this.pokemon.getTag(SubstituteTag);
+    if (substitute === null) {
+      return this.end();
+    }
+
+    const getSprite = () => {
+      const sprite = this.scene.addFieldSprite(
+        this.pokemon.x + this.pokemon.getSprite().x,
+        this.pokemon.y + this.pokemon.getSprite().y,
+        `pkmn${this.pokemon.isPlayer() ? "__back": ""}__sub`
+      );
+      sprite.setOrigin(0.5, 1);
+      this.scene.field.add(sprite);
+      return sprite;
+    };
+
+    const [ subSprite, subTintSprite ] = [ getSprite(), getSprite() ];
+    const subScale = this.pokemon.getSpriteScale() * (this.pokemon.isPlayer() ? 0.5 : 1);
+
+    subSprite.setVisible(false);
+    subSprite.setScale(subScale);
+    subTintSprite.setTintFill(0xFFFFFF);
+    subTintSprite.setScale(0.01);
+
+    if (this.pokemon.isPlayer()) {
+      this.scene.field.bringToTop(this.pokemon);
+    }
+
+    this.scene.playSound("PRSFX- Transform");
+
+    this.scene.tweens.add({
+      targets: this.pokemon,
+      duration: 500,
+      x: this.pokemon.x + this.pokemon.getSubstituteOffset()[0],
+      y: this.pokemon.y + this.pokemon.getSubstituteOffset()[1],
+      alpha: 0.5,
+      ease: "Sine.easeIn"
+    });
+
+    this.scene.tweens.add({
+      targets: subTintSprite,
+      delay: 250,
+      scale: subScale,
+      ease: "Cubic.easeInOut",
+      duration: 500,
+      onComplete: () => {
+        subSprite.setVisible(true);
+        this.pokemon.scene.tweens.add({
+          targets: subTintSprite,
+          delay: 250,
+          alpha: 0,
+          ease: "Cubic.easeOut",
+          duration: 1000,
+          onComplete: () => {
+            subTintSprite.destroy();
+            substitute.sprite = subSprite;
+            this.end();
+          }
+        });
+      }
+    });
+  }
+
+  doSubstitutePreMoveAnim(): void {
+    if (this.fieldAssets.length !== 1) {
+      return this.end();
+    }
+
+    const subSprite = this.fieldAssets[0];
+    if (subSprite === undefined) {
+      return this.end();
+    }
+
+    this.scene.tweens.add({
+      targets: subSprite,
+      alpha: 0,
+      ease: "Sine.easeInOut",
+      duration: 500
+    });
+
+    this.scene.tweens.add({
+      targets: this.pokemon,
+      x: subSprite.x,
+      y: subSprite.y,
+      alpha: 1,
+      ease: "Sine.easeInOut",
+      delay: 250,
+      duration: 500,
+      onComplete: () => this.end()
+    });
+  }
+
+  doSubstitutePostMoveAnim(): void {
+    if (this.fieldAssets.length !== 1) {
+      return this.end();
+    }
+
+    const subSprite = this.fieldAssets[0];
+    if (subSprite === undefined) {
+      return this.end();
+    }
+
+    this.scene.tweens.add({
+      targets: this.pokemon,
+      x: subSprite.x + this.pokemon.getSubstituteOffset()[0],
+      y: subSprite.y + this.pokemon.getSubstituteOffset()[1],
+      alpha: 0.5,
+      ease: "Sine.easeInOut",
+      duration: 500
+    });
+
+    this.scene.tweens.add({
+      targets: subSprite,
+      alpha: 1,
+      ease: "Sine.easeInOut",
+      delay: 250,
+      duration: 500,
+      onComplete: () => this.end()
+    });
+  }
+
+  doSubstituteRemoveAnim(): void {
+    if (this.fieldAssets.length !== 1) {
+      return this.end();
+    }
+
+    const subSprite = this.fieldAssets[0];
+    if (subSprite === undefined) {
+      return this.end();
+    }
+
+    const getSprite = () => {
+      const sprite = this.scene.addFieldSprite(
+        subSprite.x,
+        subSprite.y,
+        `pkmn${this.pokemon.isPlayer() ? "__back": ""}__sub`
+      );
+      sprite.setOrigin(0.5, 1);
+      this.scene.field.add(sprite);
+      return sprite;
+    };
+
+    const subTintSprite = getSprite();
+    const subScale = this.pokemon.getSpriteScale() * (this.pokemon.isPlayer() ? 0.5 : 1);
+    subTintSprite.setAlpha(0);
+    subTintSprite.setTintFill(0xFFFFFF);
+    subTintSprite.setScale(subScale);
+
+    this.scene.tweens.add({
+      targets: subTintSprite,
+      alpha: 1,
+      ease: "Sine.easeInOut",
+      duration: 500,
+      onComplete: () => {
+        subSprite.destroy();
+        const flashTimer = this.scene.time.addEvent({
+          delay: 100,
+          repeat: 7,
+          startAt: 200,
+          callback: () => {
+            this.scene.playSound("PRSFX- Substitute2.wav");
+
+            subTintSprite.setVisible(flashTimer.repeatCount % 2 === 0);
+            if (!flashTimer.repeatCount) {
+              this.scene.tweens.add({
+                targets: subTintSprite,
+                scale: 0.01,
+                ease: "Sine.cubicEaseIn",
+                duration: 500
+              });
+
+              this.scene.tweens.add({
+                targets: this.pokemon,
+                x: this.pokemon.x - this.pokemon.getSubstituteOffset()[0],
+                y: this.pokemon.y - this.pokemon.getSubstituteOffset()[1],
+                alpha: 1,
+                ease: "Sine.easeInOut",
+                delay: 250,
+                duration: 500,
+                onComplete: () => {
+                  subTintSprite.destroy();
+                  this.end();
+                }
+              });
+            }
+          }
+        });
+      }
+    });
+  }
+}
diff --git a/src/test/battlerTags/substitute.test.ts b/src/test/battlerTags/substitute.test.ts
new file mode 100644
index 00000000000..7be3e9e89d4
--- /dev/null
+++ b/src/test/battlerTags/substitute.test.ts
@@ -0,0 +1,234 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+import Pokemon, { MoveResult, PokemonTurnData, TurnMove, PokemonMove } from "#app/field/pokemon.js";
+import BattleScene from "#app/battle-scene.js";
+import { BattlerTagLapseType, SubstituteTag, TrappedTag } from "#app/data/battler-tags.js";
+import { BattlerTagType } from "#app/enums/battler-tag-type.js";
+import { Moves } from "#app/enums/moves.js";
+import { PokemonAnimType } from "#app/enums/pokemon-anim-type.js";
+import * as messages from "#app/messages.js";
+import { MoveEffectPhase } from "#app/phases.js";
+import { allMoves } from "#app/data/move.js";
+
+jest.mock("#app/battle-scene.js");
+
+const TIMEOUT = 5 * 1000; // 5 sec timeout
+
+describe("BattlerTag - SubstituteTag", () => {
+  let mockPokemon: Pokemon;
+
+  describe("onAdd behavior", () => {
+    beforeEach(() => {
+      mockPokemon = {
+        scene: new BattleScene(),
+        hp: 101,
+        id: 0,
+        getMaxHp: vi.fn().mockReturnValue(101) as Pokemon["getMaxHp"],
+        findAndRemoveTags: vi.fn().mockImplementation((tagFilter) => {
+          // simulate a Trapped tag set by another Pokemon, then expect the filter to catch it.
+          const trapTag = new TrappedTag(BattlerTagType.TRAPPED, BattlerTagLapseType.CUSTOM, 0, Moves.NONE, 1);
+          expect(tagFilter(trapTag)).toBeTruthy();
+          return true;
+        }) as Pokemon["findAndRemoveTags"]
+      } as Pokemon;
+
+      vi.spyOn(messages, "getPokemonNameWithAffix").mockReturnValue("");
+      vi.spyOn(mockPokemon.scene, "getPokemonById").mockImplementation(pokemonId => mockPokemon.id === pokemonId ? mockPokemon : undefined);
+    });
+
+    it(
+      "sets the tag's HP to 1/4 of the source's max HP (rounded down)",
+      async () => {
+        const subject = new SubstituteTag(Moves.SUBSTITUTE, mockPokemon.id);
+
+        vi.spyOn(mockPokemon.scene, "triggerPokemonBattleAnim").mockReturnValue(true);
+        vi.spyOn(mockPokemon.scene, "queueMessage").mockReturnValue();
+
+        subject.onAdd(mockPokemon);
+
+        expect(subject.hp).toBe(25);
+      }, TIMEOUT
+    );
+
+    it(
+      "triggers on-add effects that bring the source out of focus",
+      async () => {
+        const subject = new SubstituteTag(Moves.SUBSTITUTE, mockPokemon.id);
+
+        vi.spyOn(mockPokemon.scene, "triggerPokemonBattleAnim").mockImplementation(
+          (pokemon, battleAnimType, fieldAssets?, delayed?) => {
+            expect(battleAnimType).toBe(PokemonAnimType.SUBSTITUTE_ADD);
+            return true;
+          }
+        );
+
+        vi.spyOn(mockPokemon.scene, "queueMessage").mockReturnValue();
+
+        subject.onAdd(mockPokemon);
+
+        expect(subject.sourceInFocus).toBeFalsy();
+        expect(mockPokemon.scene.triggerPokemonBattleAnim).toHaveBeenCalledTimes(1);
+        expect(mockPokemon.scene.queueMessage).toHaveBeenCalledTimes(1);
+      }, TIMEOUT
+    );
+
+    it(
+      "removes effects that trap the source",
+      async () => {
+        const subject = new SubstituteTag(Moves.SUBSTITUTE, mockPokemon.id);
+
+        vi.spyOn(mockPokemon.scene, "queueMessage").mockReturnValue();
+
+        subject.onAdd(mockPokemon);
+        expect(mockPokemon.findAndRemoveTags).toHaveBeenCalledTimes(1);
+      }, TIMEOUT
+    );
+  });
+
+  describe("onRemove behavior", () => {
+    beforeEach(() => {
+      mockPokemon = {
+        scene: new BattleScene(),
+        hp: 101,
+        id: 0,
+        isFainted: vi.fn().mockReturnValue(false) as Pokemon["isFainted"]
+      } as Pokemon;
+
+      vi.spyOn(messages, "getPokemonNameWithAffix").mockReturnValue("");
+    });
+
+    it(
+      "triggers on-remove animation and message",
+      async () => {
+        const subject = new SubstituteTag(Moves.SUBSTITUTE, mockPokemon.id);
+        subject.sourceInFocus = false;
+
+        vi.spyOn(mockPokemon.scene, "triggerPokemonBattleAnim").mockImplementation(
+          (pokemon, battleAnimType, fieldAssets?, delayed?) => {
+            expect(battleAnimType).toBe(PokemonAnimType.SUBSTITUTE_REMOVE);
+            return true;
+          }
+        );
+
+        vi.spyOn(mockPokemon.scene, "queueMessage").mockReturnValue();
+
+        subject.onRemove(mockPokemon);
+
+        expect(mockPokemon.scene.triggerPokemonBattleAnim).toHaveBeenCalledTimes(1);
+        expect(mockPokemon.scene.queueMessage).toHaveBeenCalledTimes(1);
+      }, TIMEOUT
+    );
+  });
+
+  describe("lapse behavior", () => {
+    beforeEach(() => {
+      mockPokemon = {
+        scene: new BattleScene(),
+        hp: 101,
+        id: 0,
+        turnData: {acted: true} as PokemonTurnData,
+        getLastXMoves: vi.fn().mockReturnValue([{move: Moves.TACKLE, result: MoveResult.SUCCESS} as TurnMove]) as Pokemon["getLastXMoves"],
+      } as Pokemon;
+
+      vi.spyOn(messages, "getPokemonNameWithAffix").mockReturnValue("");
+    });
+
+    it(
+      "PRE_MOVE lapse triggers pre-move animation",
+      async () => {
+        const subject = new SubstituteTag(Moves.SUBSTITUTE, mockPokemon.id);
+
+        vi.spyOn(mockPokemon.scene, "triggerPokemonBattleAnim").mockImplementation(
+          (pokemon, battleAnimType, fieldAssets?, delayed?) => {
+            expect(battleAnimType).toBe(PokemonAnimType.SUBSTITUTE_PRE_MOVE);
+            return true;
+          }
+        );
+
+        vi.spyOn(mockPokemon.scene, "queueMessage").mockReturnValue();
+
+        expect(subject.lapse(mockPokemon, BattlerTagLapseType.PRE_MOVE)).toBeTruthy();
+
+        expect(subject.sourceInFocus).toBeTruthy();
+        expect(mockPokemon.scene.triggerPokemonBattleAnim).toHaveBeenCalledTimes(1);
+        expect(mockPokemon.scene.queueMessage).not.toHaveBeenCalled();
+      }, TIMEOUT
+    );
+
+    it(
+      "AFTER_MOVE lapse triggers post-move animation",
+      async () => {
+        const subject = new SubstituteTag(Moves.SUBSTITUTE, mockPokemon.id);
+
+        vi.spyOn(mockPokemon.scene, "triggerPokemonBattleAnim").mockImplementation(
+          (pokemon, battleAnimType, fieldAssets?, delayed?) => {
+            expect(battleAnimType).toBe(PokemonAnimType.SUBSTITUTE_POST_MOVE);
+            return true;
+          }
+        );
+
+        vi.spyOn(mockPokemon.scene, "queueMessage").mockReturnValue();
+
+        expect(subject.lapse(mockPokemon, BattlerTagLapseType.AFTER_MOVE)).toBeTruthy();
+
+        expect(subject.sourceInFocus).toBeFalsy();
+        expect(mockPokemon.scene.triggerPokemonBattleAnim).toHaveBeenCalledTimes(1);
+        expect(mockPokemon.scene.queueMessage).not.toHaveBeenCalled();
+      }, TIMEOUT
+    );
+
+    /** TODO: Figure out how to mock a MoveEffectPhase correctly for this test */
+    it.skip(
+      "HIT lapse triggers on-hit message",
+      async () => {
+        const subject = new SubstituteTag(Moves.SUBSTITUTE, mockPokemon.id);
+
+        vi.spyOn(mockPokemon.scene, "triggerPokemonBattleAnim").mockReturnValue(true);
+        vi.spyOn(mockPokemon.scene, "queueMessage").mockReturnValue();
+
+        const pokemonMove = {
+          getMove: vi.fn().mockReturnValue(allMoves[Moves.TACKLE]) as PokemonMove["getMove"]
+        } as PokemonMove;
+
+        const moveEffectPhase = {
+          move: pokemonMove,
+          getUserPokemon: vi.fn().mockReturnValue(undefined) as MoveEffectPhase["getUserPokemon"]
+        } as MoveEffectPhase;
+
+        vi.spyOn(mockPokemon.scene, "getCurrentPhase").mockReturnValue(moveEffectPhase);
+        vi.spyOn(allMoves[Moves.TACKLE], "canIgnoreSubstitute").mockReturnValue(false);
+
+        expect(subject.lapse(mockPokemon, BattlerTagLapseType.HIT)).toBeTruthy();
+
+        expect(mockPokemon.scene.triggerPokemonBattleAnim).not.toHaveBeenCalled();
+        expect(mockPokemon.scene.queueMessage).toHaveBeenCalledTimes(1);
+      }, TIMEOUT
+    );
+
+    it(
+      "CUSTOM lapse flags the tag for removal",
+      async () => {
+        const subject = new SubstituteTag(Moves.SUBSTITUTE, mockPokemon.id);
+
+        vi.spyOn(mockPokemon.scene, "triggerPokemonBattleAnim").mockReturnValue(true);
+        vi.spyOn(mockPokemon.scene, "queueMessage").mockReturnValue();
+
+        expect(subject.lapse(mockPokemon, BattlerTagLapseType.CUSTOM)).toBeFalsy();
+      }, TIMEOUT
+    );
+
+    it(
+      "Unsupported lapse type does nothing",
+      async () => {
+        const subject = new SubstituteTag(Moves.SUBSTITUTE, mockPokemon.id);
+
+        vi.spyOn(mockPokemon.scene, "triggerPokemonBattleAnim").mockReturnValue(true);
+        vi.spyOn(mockPokemon.scene, "queueMessage").mockReturnValue();
+
+        expect(subject.lapse(mockPokemon, BattlerTagLapseType.TURN_END)).toBeTruthy();
+
+        expect(mockPokemon.scene.triggerPokemonBattleAnim).not.toHaveBeenCalled();
+        expect(mockPokemon.scene.queueMessage).not.toHaveBeenCalled();
+      }
+    );
+  });
+});
diff --git a/src/test/moves/substitute.test.ts b/src/test/moves/substitute.test.ts
new file mode 100644
index 00000000000..50ea5c8e222
--- /dev/null
+++ b/src/test/moves/substitute.test.ts
@@ -0,0 +1,418 @@
+import {afterEach, beforeAll, beforeEach, describe, expect, it, vi} from "vitest";
+import Phaser from "phaser";
+import GameManager from "#app/test/utils/gameManager";
+import Overrides from "#app/overrides";
+import { Species } from "#app/enums/species.js";
+import { Abilities } from "#app/enums/abilities.js";
+import { Moves } from "#app/enums/moves.js";
+import { getMovePosition } from "../utils/gameManagerUtils";
+import { BerryPhase, MoveEffectPhase, MoveEndPhase } from "#app/phases.js";
+import { BattlerTagType } from "#app/enums/battler-tag-type.js";
+import { BattleStat } from "#app/data/battle-stat.js";
+import { allMoves, StealHeldItemChanceAttr } from "#app/data/move.js";
+import { SubstituteTag, TrappedTag } from "#app/data/battler-tags.js";
+import { StatusEffect } from "#app/data/status-effect.js";
+import { BerryType } from "#app/enums/berry-type.js";
+import { Mode } from "#app/ui/ui.js";
+import PartyUiHandler from "#app/ui/party-ui-handler.js";
+import { Button } from "#app/enums/buttons.js";
+
+const TIMEOUT = 20 * 1000; // 20 sec timeout
+
+describe("Moves - Substitute", () => {
+  let phaserGame: Phaser.Game;
+  let game: GameManager;
+
+  beforeAll(() => {
+    phaserGame = new Phaser.Game({
+      type: Phaser.HEADLESS,
+    });
+  });
+
+  afterEach(() => {
+    game.phaseInterceptor.restoreOg();
+  });
+
+  beforeEach(() => {
+    game = new GameManager(phaserGame);
+
+    vi.spyOn(Overrides, "BATTLE_TYPE_OVERRIDE", "get").mockReturnValue("single");
+    vi.spyOn(Overrides, "MOVESET_OVERRIDE", "get").mockReturnValue([Moves.SUBSTITUTE, Moves.SWORDS_DANCE, Moves.TACKLE, Moves.SPLASH]);
+    vi.spyOn(Overrides, "OPP_SPECIES_OVERRIDE", "get").mockReturnValue(Species.SNORLAX);
+    vi.spyOn(Overrides, "OPP_ABILITY_OVERRIDE", "get").mockReturnValue(Abilities.INSOMNIA);
+    vi.spyOn(Overrides, "OPP_MOVESET_OVERRIDE", "get").mockReturnValue(Array(4).fill(Moves.SPLASH));
+    vi.spyOn(Overrides, "STARTING_LEVEL_OVERRIDE", "get").mockReturnValue(100);
+    vi.spyOn(Overrides, "OPP_LEVEL_OVERRIDE", "get").mockReturnValue(100);
+  });
+
+  it(
+    "should cause the user to take damage",
+    async () => {
+      await game.startBattle([Species.MAGIKARP]);
+
+      const leadPokemon = game.scene.getPlayerPokemon();
+
+      game.doAttack(getMovePosition(game.scene, 0, Moves.SUBSTITUTE));
+
+      await game.phaseInterceptor.to(MoveEndPhase, false);
+
+      expect(leadPokemon.hp).toBe(Math.ceil(leadPokemon.getMaxHp() * 3/4));
+    }, TIMEOUT
+  );
+
+  it(
+    "should redirect enemy attack damage to the Substitute doll",
+    async () => {
+      vi.spyOn(Overrides, "OPP_MOVESET_OVERRIDE", "get").mockReturnValue(Array(4).fill(Moves.TACKLE));
+
+      await game.startBattle([Species.SKARMORY]);
+
+      const leadPokemon = game.scene.getPlayerPokemon();
+
+      game.doAttack(getMovePosition(game.scene, 0, Moves.SUBSTITUTE));
+
+      await game.phaseInterceptor.to(MoveEndPhase, false);
+
+      expect(leadPokemon.hp).toBe(Math.ceil(leadPokemon.getMaxHp() * 3/4));
+      expect(leadPokemon.getTag(BattlerTagType.SUBSTITUTE)).toBeDefined();
+      const postSubHp = leadPokemon.hp;
+
+      await game.phaseInterceptor.to(BerryPhase, false);
+
+      expect(leadPokemon.hp).toBe(postSubHp);
+      expect(leadPokemon.getTag(BattlerTagType.SUBSTITUTE)).toBeDefined();
+    }, TIMEOUT
+  );
+
+  it(
+    "should fade after redirecting more damage than its remaining HP",
+    async () => {
+      // Giga Impact OHKOs Magikarp if substitute isn't up
+      vi.spyOn(Overrides, "OPP_MOVESET_OVERRIDE", "get").mockReturnValue(Array(4).fill(Moves.GIGA_IMPACT));
+      vi.spyOn(allMoves[Moves.GIGA_IMPACT], "accuracy", "get").mockReturnValue(100);
+
+      await game.startBattle([Species.MAGIKARP]);
+
+      const leadPokemon = game.scene.getPlayerPokemon();
+
+      game.doAttack(getMovePosition(game.scene, 0, Moves.SUBSTITUTE));
+
+      await game.phaseInterceptor.to(MoveEndPhase, false);
+
+      expect(leadPokemon.hp).toBe(Math.ceil(leadPokemon.getMaxHp() * 3/4));
+      expect(leadPokemon.getTag(BattlerTagType.SUBSTITUTE)).toBeDefined();
+      const postSubHp = leadPokemon.hp;
+
+      await game.phaseInterceptor.to(BerryPhase, false);
+
+      expect(leadPokemon.hp).toBe(postSubHp);
+      expect(leadPokemon.getTag(BattlerTagType.SUBSTITUTE)).toBeUndefined();
+    }, TIMEOUT
+  );
+
+  it(
+    "should block stat changes from status moves",
+    async () => {
+      vi.spyOn(Overrides, "OPP_MOVESET_OVERRIDE", "get").mockReturnValue(Array(4).fill(Moves.CHARM));
+
+      await game.startBattle([Species.MAGIKARP]);
+
+      const leadPokemon = game.scene.getPlayerPokemon();
+
+      game.doAttack(getMovePosition(game.scene, 0, Moves.SUBSTITUTE));
+
+      await game.phaseInterceptor.to(BerryPhase, false);
+
+      expect(leadPokemon.summonData.battleStats[BattleStat.ATK]).toBe(0);
+      expect(leadPokemon.getTag(BattlerTagType.SUBSTITUTE)).toBeDefined();
+    }
+  );
+
+  it(
+    "should be bypassed by sound-based moves",
+    async () => {
+      vi.spyOn(Overrides, "OPP_MOVESET_OVERRIDE", "get").mockReturnValue(Array(4).fill(Moves.ECHOED_VOICE));
+
+      await game.startBattle([Species.BLASTOISE]);
+
+      const leadPokemon = game.scene.getPlayerPokemon();
+
+      game.doAttack(getMovePosition(game.scene, 0, Moves.SUBSTITUTE));
+
+      await game.phaseInterceptor.to(MoveEndPhase);
+
+      expect(leadPokemon.getTag(BattlerTagType.SUBSTITUTE)).toBeDefined();
+      const postSubHp = leadPokemon.hp;
+
+      await game.phaseInterceptor.to(BerryPhase, false);
+
+      expect(leadPokemon.getTag(BattlerTagType.SUBSTITUTE)).toBeDefined();
+      expect(leadPokemon.hp).toBeLessThan(postSubHp);
+    }, TIMEOUT
+  );
+
+  it(
+    "should be bypassed by attackers with Infiltrator",
+    async () => {
+      vi.spyOn(Overrides, "OPP_MOVESET_OVERRIDE", "get").mockReturnValue(Array(4).fill(Moves.TACKLE));
+      vi.spyOn(Overrides, "OPP_ABILITY_OVERRIDE", "get").mockReturnValue(Abilities.INFILTRATOR);
+
+      await game.startBattle([Species.BLASTOISE]);
+
+      const leadPokemon = game.scene.getPlayerPokemon();
+
+      game.doAttack(getMovePosition(game.scene, 0, Moves.SUBSTITUTE));
+
+      await game.phaseInterceptor.to(MoveEndPhase);
+
+      expect(leadPokemon.getTag(BattlerTagType.SUBSTITUTE)).toBeDefined();
+      const postSubHp = leadPokemon.hp;
+
+      await game.phaseInterceptor.to(BerryPhase, false);
+
+      expect(leadPokemon.getTag(BattlerTagType.SUBSTITUTE)).toBeDefined();
+      expect(leadPokemon.hp).toBeLessThan(postSubHp);
+    }, TIMEOUT
+  );
+
+  it(
+    "shouldn't block the user's own status moves",
+    async () => {
+      await game.startBattle([Species.BLASTOISE]);
+
+      const leadPokemon = game.scene.getPlayerPokemon();
+
+      game.doAttack(getMovePosition(game.scene, 0, Moves.SUBSTITUTE));
+
+      await game.phaseInterceptor.to(MoveEndPhase);
+      await game.toNextTurn();
+
+      game.doAttack(getMovePosition(game.scene, 0, Moves.SWORDS_DANCE));
+
+      await game.phaseInterceptor.to(MoveEndPhase, false);
+
+      expect(leadPokemon.summonData.battleStats[BattleStat.ATK]).toBe(2);
+    }, TIMEOUT
+  );
+
+  it(
+    "should protect the user from flinching",
+    async () => {
+      vi.spyOn(Overrides, "OPP_MOVESET_OVERRIDE", "get").mockReturnValue(Array(4).fill(Moves.FAKE_OUT));
+      vi.spyOn(Overrides, "STARTING_LEVEL_OVERRIDE", "get").mockReturnValue(1); // Ensures the Substitute will break
+
+      await game.startBattle([Species.BLASTOISE]);
+
+      const leadPokemon = game.scene.getPlayerPokemon();
+      const enemyPokemon = game.scene.getEnemyPokemon();
+
+      leadPokemon.addTag(BattlerTagType.SUBSTITUTE, null, null, leadPokemon.id);
+
+      game.doAttack(getMovePosition(game.scene, 0, Moves.TACKLE));
+
+      await game.phaseInterceptor.to(BerryPhase, false);
+
+      expect(enemyPokemon.hp).toBeLessThan(enemyPokemon.getMaxHp());
+    }, TIMEOUT
+  );
+
+  it(
+    "should protect the user from being trapped",
+    async () => {
+      vi.spyOn(allMoves[Moves.SAND_TOMB], "accuracy", "get").mockReturnValue(100);
+      vi.spyOn(Overrides, "OPP_MOVESET_OVERRIDE", "get").mockReturnValue(Array(4).fill(Moves.SAND_TOMB));
+
+      await game.startBattle([Species.BLASTOISE]);
+
+      const leadPokemon = game.scene.getPlayerPokemon();
+
+      leadPokemon.addTag(BattlerTagType.SUBSTITUTE, null, null, leadPokemon.id);
+
+      game.doAttack(getMovePosition(game.scene, 0, Moves.SPLASH));
+
+      await game.phaseInterceptor.to(BerryPhase, false);
+
+      expect(leadPokemon.getTag(TrappedTag)).toBeUndefined();
+    }, TIMEOUT
+  );
+
+  it(
+    "should prevent the user's stats from being lowered",
+    async () => {
+      vi.spyOn(allMoves[Moves.LIQUIDATION], "chance", "get").mockReturnValue(100);
+      vi.spyOn(Overrides, "OPP_MOVESET_OVERRIDE", "get").mockReturnValue(Array(4).fill(Moves.LIQUIDATION));
+
+      await game.startBattle([Species.BLASTOISE]);
+
+      const leadPokemon = game.scene.getPlayerPokemon();
+
+      leadPokemon.addTag(BattlerTagType.SUBSTITUTE, null, null, leadPokemon.id);
+
+      game.doAttack(getMovePosition(game.scene, 0, Moves.SPLASH));
+
+      await game.phaseInterceptor.to(BerryPhase, false);
+
+      expect(leadPokemon.summonData.battleStats[BattleStat.DEF]).toBe(0);
+    }, TIMEOUT
+  );
+
+  it(
+    "should protect the user from being afflicted with status effects",
+    async () => {
+      vi.spyOn(Overrides, "OPP_MOVESET_OVERRIDE", "get").mockReturnValue(Array(4).fill(Moves.NUZZLE));
+
+      await game.startBattle([Species.BLASTOISE]);
+
+      const leadPokemon = game.scene.getPlayerPokemon();
+
+      leadPokemon.addTag(BattlerTagType.SUBSTITUTE, null, null, leadPokemon.id);
+
+      game.doAttack(getMovePosition(game.scene, 0, Moves.SPLASH));
+
+      await game.phaseInterceptor.to(BerryPhase, false);
+
+      expect(leadPokemon.status?.effect).not.toBe(StatusEffect.PARALYSIS);
+    }, TIMEOUT
+  );
+
+  it(
+    "should prevent the user's items from being stolen",
+    async () => {
+      vi.spyOn(Overrides, "OPP_MOVESET_OVERRIDE", "get").mockReturnValue(Array(4).fill(Moves.THIEF));
+      vi.spyOn(allMoves[Moves.THIEF], "attrs", "get").mockReturnValue([new StealHeldItemChanceAttr(1.0)]); // give Thief 100% steal rate
+      vi.spyOn(Overrides, "STARTING_HELD_ITEMS_OVERRIDE", "get").mockReturnValue([{name: "BERRY", type: BerryType.SITRUS}]);
+
+      await game.startBattle([Species.BLASTOISE]);
+
+      const leadPokemon = game.scene.getPlayerPokemon();
+
+      leadPokemon.addTag(BattlerTagType.SUBSTITUTE, null, null, leadPokemon.id);
+
+      game.doAttack(getMovePosition(game.scene, 0, Moves.SPLASH));
+
+      await game.phaseInterceptor.to(BerryPhase, false);
+
+      expect(leadPokemon.getHeldItems().length).toBe(1);
+    }, TIMEOUT
+  );
+
+  it(
+    "should prevent the user's items from being removed",
+    async () => {
+      vi.spyOn(Overrides, "MOVESET_OVERRIDE", "get").mockReturnValue([Moves.KNOCK_OFF]);
+      vi.spyOn(Overrides, "OPP_HELD_ITEMS_OVERRIDE", "get").mockReturnValue([{name: "BERRY", type: BerryType.SITRUS}]);
+
+      await game.startBattle([Species.BLASTOISE]);
+
+      const enemyPokemon = game.scene.getEnemyPokemon();
+
+      enemyPokemon.addTag(BattlerTagType.SUBSTITUTE, null, null, enemyPokemon.id);
+      const enemyNumItems = enemyPokemon.getHeldItems().length;
+
+      game.doAttack(getMovePosition(game.scene, 0, Moves.KNOCK_OFF));
+
+      await game.phaseInterceptor.to(MoveEndPhase, false);
+
+      expect(enemyPokemon.getHeldItems().length).toBe(enemyNumItems);
+    }, TIMEOUT
+  );
+
+  it(
+    "move effect should prevent the user's berries from being stolen and eaten",
+    async () => {
+      vi.spyOn(Overrides, "OPP_MOVESET_OVERRIDE", "get").mockReturnValue(Array(4).fill(Moves.BUG_BITE));
+      vi.spyOn(Overrides, "STARTING_HELD_ITEMS_OVERRIDE", "get").mockReturnValue([{name: "BERRY", type: BerryType.SITRUS}]);
+
+      await game.startBattle([Species.BLASTOISE]);
+
+      const leadPokemon = game.scene.getPlayerPokemon();
+      const enemyPokemon = game.scene.getEnemyPokemon();
+
+      leadPokemon.addTag(BattlerTagType.SUBSTITUTE, null, null, leadPokemon.id);
+
+      game.doAttack(getMovePosition(game.scene, 0, Moves.TACKLE));
+
+      await game.phaseInterceptor.to(MoveEndPhase, false);
+      const enemyPostAttackHp = enemyPokemon.hp;
+
+      await game.phaseInterceptor.to(BerryPhase, false);
+
+      expect(leadPokemon.getHeldItems().length).toBe(1);
+      expect(enemyPokemon.hp).toBe(enemyPostAttackHp);
+    }, TIMEOUT
+  );
+
+  it(
+    "should prevent the user's stats from being reset by Clear Smog",
+    async () => {
+      vi.spyOn(Overrides, "OPP_MOVESET_OVERRIDE", "get").mockReturnValue(Array(4).fill(Moves.CLEAR_SMOG));
+
+      await game.startBattle([Species.BLASTOISE]);
+
+      const leadPokemon = game.scene.getPlayerPokemon();
+
+      leadPokemon.addTag(BattlerTagType.SUBSTITUTE, null, null, leadPokemon.id);
+
+      game.doAttack(getMovePosition(game.scene, 0, Moves.SWORDS_DANCE));
+
+      await game.phaseInterceptor.to(BerryPhase, false);
+
+      expect(leadPokemon.summonData.battleStats[BattleStat.ATK]).toBe(2);
+    }, TIMEOUT
+  );
+
+  it(
+    "should prevent the user from becoming confused",
+    async () => {
+      vi.spyOn(Overrides, "OPP_MOVESET_OVERRIDE", "get").mockReturnValue(Array(4).fill(Moves.MAGICAL_TORQUE));
+      vi.spyOn(allMoves[Moves.MAGICAL_TORQUE], "chance", "get").mockReturnValue(100);
+
+      await game.startBattle([Species.BLASTOISE]);
+
+      const leadPokemon = game.scene.getPlayerPokemon();
+
+      leadPokemon.addTag(BattlerTagType.SUBSTITUTE, null, null, leadPokemon.id);
+
+      game.doAttack(getMovePosition(game.scene, 0, Moves.SWORDS_DANCE));
+
+      await game.phaseInterceptor.to(BerryPhase, false);
+
+      expect(leadPokemon.getTag(BattlerTagType.CONFUSED)).toBeUndefined();
+      expect(leadPokemon.summonData.battleStats[BattleStat.ATK]).toBe(2);
+    }
+  );
+
+  it.skip(
+    "should transfer to the switched in Pokemon when the source uses Baton Pass",
+    async () => {
+      vi.spyOn(Overrides, "MOVESET_OVERRIDE", "get").mockReturnValue([Moves.SUBSTITUTE, Moves.BATON_PASS]);
+
+      await game.startBattle([Species.BLASTOISE, Species.CHARIZARD]);
+
+      const leadPokemon = game.scene.getPlayerPokemon();
+
+      leadPokemon.addTag(BattlerTagType.SUBSTITUTE, null, null, leadPokemon.id);
+
+      game.doAttack(getMovePosition(game.scene, 0, Moves.BATON_PASS));
+
+      await game.phaseInterceptor.to(MoveEffectPhase, false);
+
+      // TODO: Figure out how to navigate out of the Party UI
+      game.onNextPrompt("MoveEffectPhase", Mode.PARTY, () => {
+        const handler = game.scene.ui.getHandler() as PartyUiHandler;
+        handler.setCursor(1);
+        handler.processInput(Button.ACTION);
+        handler.setCursor(0);
+        handler.processInput(Button.ACTION);
+        handler.processInput(Button.ACTION);
+      });
+
+      await game.phaseInterceptor.to(BerryPhase, false);
+
+      const switchedPokemon = game.scene.getPlayerPokemon();
+      const subTag = switchedPokemon.getTag(SubstituteTag);
+      expect(subTag).toBeDefined();
+      expect(subTag.hp).toBe(Math.floor(leadPokemon.getMaxHp() * 1/4));
+    }, TIMEOUT
+  );
+});
diff --git a/src/test/moves/tidy_up.test.ts b/src/test/moves/tidy_up.test.ts
index b1292de0d27..76b6b99f55e 100644
--- a/src/test/moves/tidy_up.test.ts
+++ b/src/test/moves/tidy_up.test.ts
@@ -9,6 +9,7 @@ import { Species } from "#enums/species";
 import Phaser from "phaser";
 import { afterEach, beforeAll, beforeEach, describe, expect, it } from "vitest";
 import { SPLASH_ONLY } from "../utils/testUtils";
+import { SubstituteTag } from "#app/data/battler-tags.js";
 
 
 describe("Moves - Tidy Up", () => {
@@ -90,7 +91,7 @@ describe("Moves - Tidy Up", () => {
 
   }, 20000);
 
-  it.skip("substitutes are cleared", async() => {
+  it("substitutes are cleared", async() => {
     game.override.moveset([Moves.SUBSTITUTE, Moves.TIDY_UP]);
     game.override.enemyMoveset([Moves.SUBSTITUTE, Moves.SUBSTITUTE, Moves.SUBSTITUTE, Moves.SUBSTITUTE]);
 
@@ -100,8 +101,12 @@ describe("Moves - Tidy Up", () => {
     await game.phaseInterceptor.to(TurnEndPhase);
     game.doAttack(getMovePosition(game.scene, 0, Moves.TIDY_UP));
     await game.phaseInterceptor.to(MoveEndPhase);
-    // TODO: check for subs here once the move is implemented
 
+    const pokemon = [ game.scene.getPlayerPokemon(), game.scene.getEnemyPokemon() ];
+    pokemon.forEach(p => {
+      expect(p).toBeDefined();
+      expect(p.getTag(SubstituteTag)).toBeUndefined();
+    });
   }, 20000);
 
   it("user's stats are raised with no traps set", async() => {
diff --git a/src/ui/target-select-ui-handler.ts b/src/ui/target-select-ui-handler.ts
index 48799473343..87d5bc54e8b 100644
--- a/src/ui/target-select-ui-handler.ts
+++ b/src/ui/target-select-ui-handler.ts
@@ -7,6 +7,7 @@ import { getMoveTargets } from "../data/move";
 import {Button} from "#enums/buttons";
 import { Moves } from "#enums/moves";
 import Pokemon from "#app/field/pokemon.js";
+import { SubstituteTag } from "#app/data/battler-tags.js";
 
 export type TargetSelectCallback = (targets: BattlerIndex[]) => void;
 
@@ -107,7 +108,7 @@ export default class TargetSelectUiHandler extends UiHandler {
     if (this.targetFlashTween) {
       this.targetFlashTween.stop();
       for (const pokemon of multipleTargets) {
-        pokemon.setAlpha(1);
+        pokemon.setAlpha(!!pokemon.getTag(SubstituteTag) ? 0.5 : 1);
       }
     }
 
@@ -153,7 +154,7 @@ export default class TargetSelectUiHandler extends UiHandler {
       this.targetFlashTween = null;
     }
     for (const pokemon of this.targetsHighlighted) {
-      pokemon.setAlpha(1);
+      pokemon.setAlpha(!!pokemon.getTag(SubstituteTag) ? 0.5 : 1);
     }
 
     if (this.targetBattleInfoMoveTween.length >= 1) {