diff --git a/src/field/pokemon.ts b/src/field/pokemon.ts
index d833aa3a3bc..ddd2cfb0c9a 100644
--- a/src/field/pokemon.ts
+++ b/src/field/pokemon.ts
@@ -10,7 +10,7 @@ import * as Utils from "../utils";
 import { Type, TypeDamageMultiplier, getTypeDamageMultiplier, getTypeRgb } from "../data/type";
 import { getLevelTotalExp } from "../data/exp";
 import { Stat } from "../data/pokemon-stat";
-import { DamageMoneyRewardModifier, EnemyDamageBoosterModifier, EnemyDamageReducerModifier, EnemyEndureChanceModifier, EnemyFusionChanceModifier, HiddenAbilityRateBoosterModifier, PokemonBaseStatModifier, PokemonFriendshipBoosterModifier, PokemonHeldItemModifier, PokemonNatureWeightModifier, ShinyRateBoosterModifier, SurviveDamageModifier, TempStatStageBoosterModifier, TempCritBoosterModifier, StatBoosterModifier, CritBoosterModifier, TerastallizeModifier } from "../modifier/modifier";
+import { DamageMoneyRewardModifier, EnemyDamageBoosterModifier, EnemyDamageReducerModifier, EnemyEndureChanceModifier, EnemyFusionChanceModifier, HiddenAbilityRateBoosterModifier, BaseStatModifier, PokemonFriendshipBoosterModifier, PokemonHeldItemModifier, PokemonNatureWeightModifier, ShinyRateBoosterModifier, SurviveDamageModifier, TempStatStageBoosterModifier, TempCritBoosterModifier, StatBoosterModifier, CritBoosterModifier, TerastallizeModifier } from "../modifier/modifier";
 import { PokeballType } from "../data/pokeball";
 import { Gender } from "../data/gender";
 import { initMoveAnim, loadMoveAnimAssets } from "../data/battle-anims";
@@ -707,10 +707,10 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
 
   /**
    * Retrieves the entire set of in-battle stat stages of the {@linkcode Pokemon}.
-   * @returns the numeric values of the {@linkcode Pokemon}'s in-battle stat stages if available, undefined otherwise
+   * @returns the numeric values of the {@linkcode Pokemon}'s in-battle stat stages if available, a fresh stat stage array otherwise
    */
-  getStatStages(): number[] | undefined {
-    return this.summonData ? this.summonData.statStages : undefined;
+  getStatStages(): number[] {
+    return this.summonData ? this.summonData.statStages : [ 0, 0, 0, 0, 0, 0, 0 ];
   }
 
   /**
@@ -817,22 +817,23 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
       this.stats = [ 0, 0, 0, 0, 0, 0 ];
     }
 
+    // Get and manipulate base stats
     const baseStats = this.getSpeciesForm(true).baseStats.slice();
     if (this.isFusion()) {
       const fusionBaseStats = this.getFusionSpeciesForm(true).baseStats;
-      for (let s = 0; s < this.stats.length; s++) {
+      for (const s of PERMANENT_STATS) {
         baseStats[s] = Math.ceil((baseStats[s] + fusionBaseStats[s]) / 2);
       }
     } else if (this.scene.gameMode.isSplicedOnly) {
-      for (let s = 0; s < this.stats.length; s++) {
+      for (const s of PERMANENT_STATS) {
         baseStats[s] = Math.ceil(baseStats[s] / 2);
       }
     }
+    this.scene.applyModifiers(BaseStatModifier, this.isPlayer(), this, baseStats);
 
-    this.scene.applyModifiers(PokemonBaseStatModifier, this.isPlayer(), this, baseStats);
+    // Using base stats, calculate and store stats one by one
     for (const s of PERMANENT_STATS) {
-      const baseStat = baseStats[s];
-      let value = Math.floor(((2 * baseStat + this.ivs[s]) * this.level) * 0.01);
+      let value = Math.floor(((2 * baseStats[s] + this.ivs[s]) * this.level) * 0.01);
       if (s === Stat.HP) {
         value = value + this.level + 10;
         if (this.hasAbility(Abilities.WONDER_GUARD, false, true)) {
diff --git a/src/locales/ca_ES/modifier-type.ts b/src/locales/ca_ES/modifier-type.ts
index 551fd6359a2..66b34dc1523 100644
--- a/src/locales/ca_ES/modifier-type.ts
+++ b/src/locales/ca_ES/modifier-type.ts
@@ -63,8 +63,8 @@ export const modifierType: ModifierTypeTranslationEntries = {
     "AllPokemonLevelIncrementModifierType": {
       description: "Increases all party members' level by {{levels}}.",
     },
-    "PokemonBaseStatBoosterModifierType": {
-      description: "Increases the holder's base {{statName}} by 10%. The higher your IVs, the higher the stack limit.",
+    "BaseStatBoosterModifierType": {
+      description: "Increases the holder's base {{stat}} by 10%. The higher your IVs, the higher the stack limit.",
     },
     "AllPokemonFullHpRestoreModifierType": {
       description: "Restores 100% HP for all Pokémon.",
diff --git a/src/locales/de/modifier-type.ts b/src/locales/de/modifier-type.ts
index 34616007fdd..e494d126d82 100644
--- a/src/locales/de/modifier-type.ts
+++ b/src/locales/de/modifier-type.ts
@@ -63,8 +63,8 @@ export const modifierType: ModifierTypeTranslationEntries = {
     "AllPokemonLevelIncrementModifierType": {
       description: "Erhöht das Level aller Teammitglieder um {{levels}}.",
     },
-    "PokemonBaseStatBoosterModifierType": {
-      description: "Erhöht den {{statName}} Basiswert des Trägers um 10%. Das Stapellimit erhöht sich, je höher dein IS-Wert ist.",
+    "BaseStatBoosterModifierType": {
+      description: "Erhöht den {{stat}} Basiswert des Trägers um 10%. Das Stapellimit erhöht sich, je höher dein IS-Wert ist.",
     },
     "AllPokemonFullHpRestoreModifierType": {
       description: "Stellt 100% der KP aller Pokémon her.",
diff --git a/src/locales/en/modifier-type.ts b/src/locales/en/modifier-type.ts
index 551fd6359a2..66b34dc1523 100644
--- a/src/locales/en/modifier-type.ts
+++ b/src/locales/en/modifier-type.ts
@@ -63,8 +63,8 @@ export const modifierType: ModifierTypeTranslationEntries = {
     "AllPokemonLevelIncrementModifierType": {
       description: "Increases all party members' level by {{levels}}.",
     },
-    "PokemonBaseStatBoosterModifierType": {
-      description: "Increases the holder's base {{statName}} by 10%. The higher your IVs, the higher the stack limit.",
+    "BaseStatBoosterModifierType": {
+      description: "Increases the holder's base {{stat}} by 10%. The higher your IVs, the higher the stack limit.",
     },
     "AllPokemonFullHpRestoreModifierType": {
       description: "Restores 100% HP for all Pokémon.",
diff --git a/src/locales/es/modifier-type.ts b/src/locales/es/modifier-type.ts
index 9a73c727fd3..6e664695b47 100644
--- a/src/locales/es/modifier-type.ts
+++ b/src/locales/es/modifier-type.ts
@@ -63,8 +63,8 @@ export const modifierType: ModifierTypeTranslationEntries = {
     "AllPokemonLevelIncrementModifierType": {
       description: "Aumenta el nivel de todos los miembros del equipo en {{levels}}.",
     },
-    "PokemonBaseStatBoosterModifierType": {
-      description: "Aumenta la est. {{statName}} base del portador en un 10%.\nCuanto mayores sean tus IVs, mayor será el límite de acumulación.",
+    "BaseStatBoosterModifierType": {
+      description: "Aumenta la est. {{stat}} base del portador en un 10%.\nCuanto mayores sean tus IVs, mayor será el límite de acumulación.",
     },
     "AllPokemonFullHpRestoreModifierType": {
       description: "Restaura el 100% de los PS de todos los Pokémon.",
diff --git a/src/locales/fr/modifier-type.ts b/src/locales/fr/modifier-type.ts
index 327762974c3..da6a3ed94df 100644
--- a/src/locales/fr/modifier-type.ts
+++ b/src/locales/fr/modifier-type.ts
@@ -63,8 +63,8 @@ export const modifierType: ModifierTypeTranslationEntries = {
     "AllPokemonLevelIncrementModifierType": {
       description: "Fait monter toute l’équipe de {{levels}} niveau·x.",
     },
-    "PokemonBaseStatBoosterModifierType": {
-      description: "Augmente de 10% {{statName}} de base de son porteur. Plus les IV sont hauts, plus il peut en porter.",
+    "BaseStatBoosterModifierType": {
+      description: "Augmente de 10% {{stat}} de base de son porteur. Plus les IV sont hauts, plus il peut en porter.",
     },
     "AllPokemonFullHpRestoreModifierType": {
       description: "Restaure tous les PV de toute l’équipe.",
diff --git a/src/locales/it/modifier-type.ts b/src/locales/it/modifier-type.ts
index 1dd72322fed..c6a20db9e7c 100644
--- a/src/locales/it/modifier-type.ts
+++ b/src/locales/it/modifier-type.ts
@@ -63,8 +63,8 @@ export const modifierType: ModifierTypeTranslationEntries = {
     "AllPokemonLevelIncrementModifierType": {
       description: "Aumenta i livell di tutti i Pokémon della squadra di {{levels}}.",
     },
-    "PokemonBaseStatBoosterModifierType": {
-      description: "Aumenta {{statName}} di base del possessore del 10%.",
+    "BaseStatBoosterModifierType": {
+      description: "Aumenta {{stat}} di base del possessore del 10%.",
     },
     "AllPokemonFullHpRestoreModifierType": {
       description: "Restituisce il 100% dei PS a tutti i Pokémon.",
diff --git a/src/locales/ja/modifier-type.ts b/src/locales/ja/modifier-type.ts
index 07857065999..08a5594d694 100644
--- a/src/locales/ja/modifier-type.ts
+++ b/src/locales/ja/modifier-type.ts
@@ -63,8 +63,8 @@ export const modifierType: ModifierTypeTranslationEntries = {
     "AllPokemonLevelIncrementModifierType": {
       description: "すべてのパーティメンバーのレベルを1あげる",
     },
-    "PokemonBaseStatBoosterModifierType": {
-      description: "ポケモンの{{statName}}のきほんステータスを10パーセントあげる。こたいちがたかいほどスタックのげんかいもたかくなる。",
+    "BaseStatBoosterModifierType": {
+      description: "ポケモンの{{stat}}のきほんステータスを10パーセントあげる。こたいちがたかいほどスタックのげんかいもたかくなる。",
     },
     "AllPokemonFullHpRestoreModifierType": {
       description: "すべてのポケモンのHPを100パーセントかいふくする",
diff --git a/src/locales/ko/modifier-type.ts b/src/locales/ko/modifier-type.ts
index dfdcb402b7a..682b947dee9 100644
--- a/src/locales/ko/modifier-type.ts
+++ b/src/locales/ko/modifier-type.ts
@@ -63,8 +63,8 @@ export const modifierType: ModifierTypeTranslationEntries = {
     "AllPokemonLevelIncrementModifierType": {
       description: "자신의 모든 포켓몬의 레벨이 {{levels}}만큼 상승한다.",
     },
-    "PokemonBaseStatBoosterModifierType": {
-      description: "지니게 하면 {{statName}} 종족값을 10% 올려준다. 개체값이 높을수록 더 많이 누적시킬 수 있다.",
+    "BaseStatBoosterModifierType": {
+      description: "지니게 하면 {{stat}} 종족값을 10% 올려준다. 개체값이 높을수록 더 많이 누적시킬 수 있다.",
     },
     "AllPokemonFullHpRestoreModifierType": {
       description: "자신의 포켓몬의 HP를 모두 회복한다.",
diff --git a/src/locales/pt_BR/modifier-type.ts b/src/locales/pt_BR/modifier-type.ts
index bc9dd84aae7..d1351dfcf5c 100644
--- a/src/locales/pt_BR/modifier-type.ts
+++ b/src/locales/pt_BR/modifier-type.ts
@@ -63,8 +63,8 @@ export const modifierType: ModifierTypeTranslationEntries = {
     "AllPokemonLevelIncrementModifierType": {
       description: "Aumenta em {{levels}} o nível de todos os membros da equipe.",
     },
-    "PokemonBaseStatBoosterModifierType": {
-      description: "Aumenta o atributo base de {{statName}} em 10%. Quanto maior os IVs, maior o limite de aumento.",
+    "BaseStatBoosterModifierType": {
+      description: "Aumenta o atributo base de {{stat}} em 10%. Quanto maior os IVs, maior o limite de aumento.",
     },
     "AllPokemonFullHpRestoreModifierType": {
       description: "Restaura totalmente os PS de todos os Pokémon.",
diff --git a/src/locales/zh_CN/modifier-type.ts b/src/locales/zh_CN/modifier-type.ts
index 7eff04479a3..1f45a0e397f 100644
--- a/src/locales/zh_CN/modifier-type.ts
+++ b/src/locales/zh_CN/modifier-type.ts
@@ -63,8 +63,8 @@ export const modifierType: ModifierTypeTranslationEntries = {
     "AllPokemonLevelIncrementModifierType": {
       description: "使一只寶可夢的等級提升{{levels}}級。",
     },
-    "PokemonBaseStatBoosterModifierType": {
-      description: "增加10%持有者的{{statName}}，\n个体值越高堆叠上限越高。",
+    "BaseStatBoosterModifierType": {
+      description: "增加10%持有者的{{stat}}，\n个体值越高堆叠上限越高。",
     },
     "AllPokemonFullHpRestoreModifierType": {
       description: "所有宝可梦完全回复HP。",
diff --git a/src/locales/zh_TW/modifier-type.ts b/src/locales/zh_TW/modifier-type.ts
index 17afbec5994..e9fff5fa01d 100644
--- a/src/locales/zh_TW/modifier-type.ts
+++ b/src/locales/zh_TW/modifier-type.ts
@@ -63,9 +63,9 @@ export const modifierType: ModifierTypeTranslationEntries = {
     AllPokemonLevelIncrementModifierType: {
       description: "Increases all party members' level by {{levels}}.",
     },
-    PokemonBaseStatBoosterModifierType: {
+    BaseStatBoosterModifierType: {
       description:
-                "增加持有者的{{statName}}10%，個體值越高堆疊\n上限越高。",
+                "增加持有者的{{stat}}10%，個體值越高堆疊\n上限越高。",
     },
     AllPokemonFullHpRestoreModifierType: {
       description: "所有寶可夢完全恢復HP。",
diff --git a/src/modifier/modifier-type.ts b/src/modifier/modifier-type.ts
index ee34b1b4316..93ebee3d7a8 100644
--- a/src/modifier/modifier-type.ts
+++ b/src/modifier/modifier-type.ts
@@ -3,7 +3,6 @@ import { AttackMove, allMoves, selfStatLowerMoves } from "../data/move";
 import { MAX_PER_TYPE_POKEBALLS, PokeballType, getPokeballCatchMultiplier, getPokeballName } from "../data/pokeball";
 import Pokemon, { EnemyPokemon, PlayerPokemon, PokemonMove } from "../field/pokemon";
 import { EvolutionItem, pokemonEvolutions } from "../data/pokemon-evolutions";
-import { Stat, getStatName } from "../data/pokemon-stat";
 import { tmPoolTiers, tmSpecies } from "../data/tms";
 import { Type } from "../data/type";
 import PartyUiHandler, { PokemonMoveSelectFilter, PokemonSelectFilter } from "../ui/party-ui-handler";
@@ -27,7 +26,7 @@ import { BerryType } from "#enums/berry-type";
 import { Moves } from "#enums/moves";
 import { Species } from "#enums/species";
 import { getPokemonNameWithAffix } from "#app/messages.js";
-import { TEMP_BATTLE_STATS, TempBattleStat } from "#app/enums/stat";
+import { PermanentStat, TEMP_BATTLE_STATS, TempBattleStat, Stat } from "#app/enums/stat";
 
 const outputModifierData = false;
 const useMaxWeightForOutput = false;
@@ -593,40 +592,24 @@ export class AllPokemonLevelIncrementModifierType extends ModifierType {
   }
 }
 
-function getBaseStatBoosterItemName(stat: Stat) {
-  switch (stat) {
-  case Stat.HP:
-    return "HP Up";
-  case Stat.ATK:
-    return "Protein";
-  case Stat.DEF:
-    return "Iron";
-  case Stat.SPATK:
-    return "Calcium";
-  case Stat.SPDEF:
-    return "Zinc";
-  case Stat.SPD:
-    return "Carbos";
-  }
-}
+export class BaseStatBoosterModifierType extends PokemonHeldItemModifierType implements GeneratedPersistentModifierType {
+  private stat: PermanentStat;
+  private key: string;
 
-export class PokemonBaseStatBoosterModifierType extends PokemonHeldItemModifierType implements GeneratedPersistentModifierType {
-  private localeName: string;
-  private stat: Stat;
+  constructor(stat: PermanentStat) {
+    const key = BaseStatBoosterModifierTypeGenerator.items[stat];
+    super("", key, (_type, args) => new Modifiers.BaseStatModifier(this, (args[0] as Pokemon).id, this.stat));
 
-  constructor(localeName: string, stat: Stat) {
-    super("", localeName.replace(/[ \-]/g, "_").toLowerCase(), (_type, args) => new Modifiers.PokemonBaseStatModifier(this, (args[0] as Pokemon).id, this.stat));
-
-    this.localeName = localeName;
     this.stat = stat;
+    this.key = key;
   }
 
   get name(): string {
-    return i18next.t(`modifierType:BaseStatBoosterItem.${this.localeName.replace(/[ \-]/g, "_").toLowerCase()}`);
+    return i18next.t(`modifierType:BaseStatBoosterItem.${this.key}`);
   }
 
-  getDescription(scene: BattleScene): string {
-    return i18next.t("modifierType:ModifierType.PokemonBaseStatBoosterModifierType.description", { statName: getStatName(this.stat) });
+  getDescription(_scene: BattleScene): string {
+    return i18next.t("modifierType:ModifierType.BaseStatBoosterModifierType.description", { stat: i18next.t(`pokemonInfo:Stat.${Stat[this.stat]}`) });
   }
 
   getPregenArgs(): any[] {
@@ -904,6 +887,27 @@ class AttackTypeBoosterModifierTypeGenerator extends ModifierTypeGenerator {
   }
 }
 
+class BaseStatBoosterModifierTypeGenerator extends ModifierTypeGenerator {
+  public static readonly items: Record<PermanentStat, string> = {
+    [Stat.HP]: "hp_up",
+    [Stat.ATK]: "protein",
+    [Stat.DEF]: "iron",
+    [Stat.SPATK]: "calcium",
+    [Stat.SPDEF]: "zinc",
+    [Stat.SPD]: "carbos"
+  };
+
+  constructor() {
+    super((_party: Pokemon[], pregenArgs?: any[]) => {
+      if (pregenArgs) {
+        return new BaseStatBoosterModifierType(pregenArgs[0]);
+      }
+      const randStat: PermanentStat = Utils.randSeedInt(Stat.SPD + 1);
+      return new BaseStatBoosterModifierType(randStat);
+    });
+  }
+}
+
 class TempStatStageBoosterModifierTypeGenerator extends ModifierTypeGenerator {
   public static readonly items: Record<TempBattleStat, string> = {
     [Stat.ATK]: "x_attack",
@@ -1304,14 +1308,7 @@ export const modifierTypes = {
     }
   }("modifierType:ModifierType.DIRE_HIT", "dire_hit", (type, _args) => new Modifiers.TempCritBoosterModifier(type)),
 
-  BASE_STAT_BOOSTER: () => new ModifierTypeGenerator((party: Pokemon[], pregenArgs?: any[]) => {
-    if (pregenArgs) {
-      const stat = pregenArgs[0] as Stat;
-      return new PokemonBaseStatBoosterModifierType(getBaseStatBoosterItemName(stat)!, stat); // TODO: Stat
-    }
-    const randStat = Utils.randSeedInt(6) as Stat;
-    return new PokemonBaseStatBoosterModifierType(getBaseStatBoosterItemName(randStat)!, randStat); // TODO: Stat
-  }),
+  BASE_STAT_BOOSTER: () => new BaseStatBoosterModifierTypeGenerator(),
 
   ATTACK_TYPE_BOOSTER: () => new AttackTypeBoosterModifierTypeGenerator(),
 
diff --git a/src/modifier/modifier.ts b/src/modifier/modifier.ts
index 5aea88bb21b..2fc535fd37d 100644
--- a/src/modifier/modifier.ts
+++ b/src/modifier/modifier.ts
@@ -23,7 +23,7 @@ import Overrides from "#app/overrides";
 import { ModifierType, modifierTypes } from "./modifier-type";
 import { Command } from "#app/ui/command-ui-handler.js";
 import { Species } from "#enums/species";
-import { BATTLE_STATS, TEMP_BATTLE_STATS, TempBattleStat } from "#app/enums/stat";
+import { BATTLE_STATS, PermanentStat, TEMP_BATTLE_STATS, TempBattleStat } from "#app/enums/stat"; // TODO: Add Type
 import i18next from "i18next";
 
 import { allMoves } from "#app/data/move.js";
@@ -708,24 +708,30 @@ export class TerastallizeModifier extends LapsingPokemonHeldItemModifier {
   }
 }
 
-export class PokemonBaseStatModifier extends PokemonHeldItemModifier {
-  protected stat: Stat;
+/**
+ * Modifier used for held items, specifically vitamins like Carbos, Hp Up, etc., that
+ * increase the value of a given {@linkcode PermanentStat}.
+ * @extends LapsingPersistentModifier
+ * @see {@linkcode apply}
+ */
+export class BaseStatModifier extends PokemonHeldItemModifier {
+  protected stat: PermanentStat;
   readonly isTransferrable: boolean = false;
 
-  constructor(type: ModifierTypes.PokemonBaseStatBoosterModifierType, pokemonId: integer, stat: Stat, stackCount?: integer) {
+  constructor(type: ModifierType, pokemonId: integer, stat: PermanentStat, stackCount?: integer) {
     super(type, pokemonId, stackCount);
     this.stat = stat;
   }
 
   matchType(modifier: Modifier): boolean {
-    if (modifier instanceof PokemonBaseStatModifier) {
-      return (modifier as PokemonBaseStatModifier).stat === this.stat;
+    if (modifier instanceof BaseStatModifier) {
+      return (modifier as BaseStatModifier).stat === this.stat;
     }
     return false;
   }
 
   clone(): PersistentModifier {
-    return new PokemonBaseStatModifier(this.type as ModifierTypes.PokemonBaseStatBoosterModifierType, this.pokemonId, this.stat, this.stackCount);
+    return new BaseStatModifier(this.type, this.pokemonId, this.stat, this.stackCount);
   }
 
   getArgs(): any[] {
@@ -733,12 +739,12 @@ export class PokemonBaseStatModifier extends PokemonHeldItemModifier {
   }
 
   shouldApply(args: any[]): boolean {
-    return super.shouldApply(args) && args.length === 2 && args[1] instanceof Array;
+    return super.shouldApply(args) && args.length === 2 && Array.isArray(args[1]);
   }
 
   apply(args: any[]): boolean {
-    args[1][this.stat] = Math.min(Math.floor(args[1][this.stat] * (1 + this.getStackCount() * 0.1)), 999999);
-
+    const baseStats = args[1] as number[];
+    baseStats[this.stat] = Math.floor(baseStats[this.stat] * (1 + this.getStackCount() * 0.1));
     return true;
   }
 
diff --git a/src/ui/battle-info.ts b/src/ui/battle-info.ts
index c091d4a3aa5..ceee07eda01 100644
--- a/src/ui/battle-info.ts
+++ b/src/ui/battle-info.ts
@@ -650,9 +650,7 @@ export default class BattleInfo extends Phaser.GameObjects.Container {
         this.lastLevel = pokemon.level;
       }
 
-      const battleStats = pokemon.summonData
-        ? pokemon.summonData.statStages // TODO: BattleStats
-        : this.battleStatOrder.map(() => 0);
+      const battleStats = pokemon.getStatStages();
       const battleStatsStr = battleStats.join("");
 
       if (this.lastBattleStats !== battleStatsStr) {
diff --git a/src/ui/party-ui-handler.ts b/src/ui/party-ui-handler.ts
index 3a9b3463ef1..2f9c9a9737f 100644
--- a/src/ui/party-ui-handler.ts
+++ b/src/ui/party-ui-handler.ts
@@ -6,7 +6,7 @@ import { Command } from "./command-ui-handler";
 import MessageUiHandler from "./message-ui-handler";
 import { Mode } from "./ui";
 import * as Utils from "../utils";
-import { PokemonBaseStatModifier, PokemonFormChangeItemModifier, PokemonHeldItemModifier, SwitchEffectTransferModifier } from "../modifier/modifier";
+import { BaseStatModifier, PokemonFormChangeItemModifier, PokemonHeldItemModifier, SwitchEffectTransferModifier } from "../modifier/modifier";
 import { allMoves, ForceSwitchOutAttr } from "../data/move";
 import { getGenderColor, getGenderSymbol } from "../data/gender";
 import { StatusEffect } from "../data/status-effect";
@@ -996,8 +996,8 @@ export default class PartyUiHandler extends MessageUiHandler {
       if (this.partyUiMode === PartyUiMode.MODIFIER_TRANSFER && this.transferQuantitiesMax[option] > 1) {
         const itemModifier = itemModifiers[option];
 
-        /** Not sure why getMaxHeldItemCount had an error, but it only checks the Pokemon parameter if the modifier is PokemonBaseStatModifier */
-        if (itemModifier === undefined || itemModifier instanceof PokemonBaseStatModifier) {
+        /** Not sure why getMaxHeldItemCount had an error, but it only checks the Pokemon parameter if the modifier is BaseStatModifier */
+        if (itemModifier === undefined || itemModifier instanceof BaseStatModifier) {
           continue;
         }