diff --git a/src/battle-scene.ts b/src/battle-scene.ts
index 0f75447a500..8d81a9b9ac7 100644
--- a/src/battle-scene.ts
+++ b/src/battle-scene.ts
@@ -4,7 +4,7 @@ import { NextEncounterPhase, NewBiomeEncounterPhase, SelectBiomePhase, MessagePh
 import Pokemon, { PlayerPokemon, EnemyPokemon } from './field/pokemon';
 import PokemonSpecies, { PokemonSpeciesFilter, allSpecies, getPokemonSpecies, initSpecies, speciesStarters } from './data/pokemon-species';
 import * as Utils from './utils';
-import { Modifier, ModifierBar, ConsumablePokemonModifier, ConsumableModifier, PokemonHpRestoreModifier, HealingBoosterModifier, PersistentModifier, PokemonHeldItemModifier, ModifierPredicate, DoubleBattleChanceBoosterModifier, FusePokemonModifier, PokemonFormChangeItemModifier, TerastallizeModifier, overrideModifiers, overrideHeldItems } from './modifier/modifier';
+import { Modifier, ModifierBar, ConsumablePokemonModifier, ConsumableModifier, PokemonHpRestoreModifier, HealingBoosterModifier, PersistentModifier, PokemonHeldItemModifier, ModifierPredicate, DoubleBattleChanceBoosterModifier, FusePokemonModifier, PokemonFormChangeItemModifier, TerastallizeModifier, overrideModifiers, overrideHeldItems, TrainerBattleChanceBoosterModifier } from './modifier/modifier';
 import { PokeballType } from './data/pokeball';
 import { initCommonAnims, initMoveAnim, loadCommonAnimAssets, loadMoveAnimAssets, populateAnims } from './data/battle-anims';
 import { Phase } from './phase';
@@ -846,9 +846,11 @@ export default class BattleScene extends SceneBase {
 		} else {
 			if (!this.gameMode.hasTrainers)
 				newBattleType = BattleType.WILD;
-			else if (battleType === undefined)
-				newBattleType = this.gameMode.isWaveTrainer(newWaveIndex, this.arena) ? BattleType.TRAINER : BattleType.WILD;
-			else
+			else if (battleType === undefined) {
+				const trainerChanceMod = new Utils.IntegerHolder(this.arena.getTrainerChance());
+				this.applyModifiers(TrainerBattleChanceBoosterModifier, true, trainerChanceMod);
+				newBattleType = this.gameMode.isWaveTrainer(newWaveIndex, this.arena, trainerChanceMod.value) ? BattleType.TRAINER : BattleType.WILD;
+			} else
 				newBattleType = battleType;
 
 			if (newBattleType === BattleType.TRAINER) {
diff --git a/src/game-mode.ts b/src/game-mode.ts
index 888ae3b3c84..1fbb66987f2 100644
--- a/src/game-mode.ts
+++ b/src/game-mode.ts
@@ -96,13 +96,13 @@ export class GameMode implements GameModeConfig {
     }
   }
 
-  isWaveTrainer(waveIndex: integer, arena: Arena): boolean {
+  isWaveTrainer(waveIndex: integer, arena: Arena, trainerChanceMod: integer): boolean {
     if (this.isDaily)
       return waveIndex % 10 === 5 || (!(waveIndex % 10) && waveIndex > 10 && !this.isWaveFinal(waveIndex));
     if ((waveIndex % 30) === (arena.scene.offsetGym ? 0 : 20) && !this.isWaveFinal(waveIndex))
       return true;
     else if (waveIndex % 10 !== 1 && waveIndex % 10) {
-      const trainerChance = arena.getTrainerChance();
+      const trainerChance = trainerChanceMod;
       let allowTrainerBattle = true;
       if (trainerChance) {
         const waveBase = Math.floor(waveIndex / 10) * 10;
@@ -114,7 +114,7 @@ export class GameMode implements GameModeConfig {
             break;
           } else if (w < waveIndex) {
             arena.scene.executeWithSeedOffset(() => {
-              const waveTrainerChance = arena.getTrainerChance();
+              const waveTrainerChance = trainerChanceMod;
               if (!Utils.randSeedInt(waveTrainerChance))
                 allowTrainerBattle = false;
             }, w);
@@ -123,7 +123,7 @@ export class GameMode implements GameModeConfig {
           }
         }
       }
-      return allowTrainerBattle && trainerChance && !Utils.randSeedInt(trainerChance);
+      return allowTrainerBattle && trainerChance && !Utils.randSeedInt(trainerChanceMod);
     }
     return false;
   }
diff --git a/src/locales/en/modifier-type.ts b/src/locales/en/modifier-type.ts
index 31d4abbce29..cea22b23954 100644
--- a/src/locales/en/modifier-type.ts
+++ b/src/locales/en/modifier-type.ts
@@ -51,6 +51,9 @@ export const modifierType: ModifierTypeTranslationEntries = {
     "DoubleBattleChanceBoosterModifierType": {
       description: "Doubles the chance of an encounter being a double battle for {{battleCount}} battles",
     },
+    "TrainerBattleChanceBoosterModifierType": {
+      description: "Doubles the chance of an encounter being a trainer battle for {{battleCount}} battles",
+    },
     "TempBattleStatBoosterModifierType": {
       description: "Increases the {{tempBattleStatName}} of all party members by 1 stage for 5 battles",
     },
@@ -162,6 +165,10 @@ export const modifierType: ModifierTypeTranslationEntries = {
     "SUPER_LURE": { name: "Super Lure" },
     "MAX_LURE": { name: "Max Lure" },
 
+    "REPEL": { name: "Repel" },
+    "SUPER_REPEL": { name: "Super Repel" },
+    "MAX_REPEL": { name: "Max Repel" },
+
     "MEMORY_MUSHROOM": { name: "Memory Mushroom", description: "Recall one Pokémon's forgotten move" },
 
     "EXP_SHARE": { name: "EXP. All", description: "Non-participants receive 20% of a single participant's EXP. Points" },
diff --git a/src/locales/it/modifier-type.ts b/src/locales/it/modifier-type.ts
index 70303dd7acd..e8ac2610254 100644
--- a/src/locales/it/modifier-type.ts
+++ b/src/locales/it/modifier-type.ts
@@ -51,6 +51,9 @@ export const modifierType: ModifierTypeTranslationEntries = {
     "DoubleBattleChanceBoosterModifierType": {
       description: "Raddoppia la possibilità di imbattersi in doppie battaglie per {{battleCount}} battaglie",
     },
+    "TrainerBattleChanceBoosterModifierType": {
+      description: "Raddoppia la possibilità di imbattersi in battaglie con allenatori per {{battleCount}} battaglie",
+    },
     "TempBattleStatBoosterModifierType": {
       description: "Aumenta {{tempBattleStatName}} di un livello a tutti i Pokémon nel gruppo per 5 battaglie",
     },
@@ -162,6 +165,10 @@ export const modifierType: ModifierTypeTranslationEntries = {
     "SUPER_LURE": { name: "Profumo Invito Super" },
     "MAX_LURE": { name: "Profumo Invito Max" },
 
+    "REPEL": { name: "Repellente" },
+    "SUPER_REPEL": { name: "Superrepellente" },
+    "MAX_REPEL": { name: "Repellente max" },
+
     "MEMORY_MUSHROOM": { name: "Fungo della Memoria", description: "Ricorda la mossa dimenticata di un Pokémon" },
 
     "EXP_SHARE": { name: "Condividi Esperienza", description: "Tutti i Pokémon della squadra ricevono il 20% dei Punti Esperienza dalla lotta anche se non vi hanno partecipato" },
diff --git a/src/modifier/modifier-type.ts b/src/modifier/modifier-type.ts
index 278de2f18e8..d55e42387da 100644
--- a/src/modifier/modifier-type.ts
+++ b/src/modifier/modifier-type.ts
@@ -407,6 +407,20 @@ export class DoubleBattleChanceBoosterModifierType extends ModifierType {
   }
 }
 
+export class TrainerBattleChanceBoosterModifierType extends ModifierType {
+  public battleCount: integer;
+
+  constructor(localeKey: string, iconImage: string, battleCount: integer) {
+    super(localeKey, iconImage, (_type, _args) => new Modifiers.TrainerBattleChanceBoosterModifier(this, this.battleCount), 'repel');
+
+    this.battleCount = battleCount;
+  }
+
+  getDescription(scene: BattleScene): string {
+    return i18next.t(`modifierType:ModifierType.DoubleBattleChanceBoosterModifierType.description`, { battleCount: this.battleCount });
+  }
+}
+
 export class TempBattleStatBoosterModifierType extends ModifierType implements GeneratedPersistentModifierType {
   public tempBattleStat: TempBattleStat;
 
@@ -1031,9 +1045,9 @@ export const modifierTypes = {
   PP_UP: () => new PokemonPpUpModifierType(`modifierType:ModifierType.PP_UP`, 'pp_up', 1),
   PP_MAX: () => new PokemonPpUpModifierType(`modifierType:ModifierType.PP_MAX`, 'pp_max', 3),
 
-  /*REPEL: () => new DoubleBattleChanceBoosterModifierType('Repel', 5),
-  SUPER_REPEL: () => new DoubleBattleChanceBoosterModifierType('Super Repel', 10),
-  MAX_REPEL: () => new DoubleBattleChanceBoosterModifierType('Max Repel', 25),*/
+  REPEL: () => new TrainerBattleChanceBoosterModifierType(`modifierType:ModifierType.REPEL`, 'repel', 5),
+  SUPER_REPEL: () => new DoubleBattleChanceBoosterModifierType(`modifierType:ModifierType.SUPER_REPEL`, 'super_repel', 10),
+  MAX_REPEL: () => new DoubleBattleChanceBoosterModifierType(`modifierType:ModifierType.MAX_REPEL`, 'max_repel', 25),
 
   LURE: () => new DoubleBattleChanceBoosterModifierType(`modifierType:ModifierType.LURE`, 'lure', 5),
   SUPER_LURE: () => new DoubleBattleChanceBoosterModifierType(`modifierType:ModifierType.SUPER_LURE`, 'super_lure', 10),
@@ -1202,6 +1216,7 @@ const modifierPool: ModifierPool = {
       return thresholdPartyMemberCount;
     }, 3),
     new WeightedModifierType(modifierTypes.LURE, 2),
+    new WeightedModifierType(modifierTypes.REPEL, 2),
     new WeightedModifierType(modifierTypes.TEMP_STAT_BOOSTER, 4),
     new WeightedModifierType(modifierTypes.BERRY, 2),
     new WeightedModifierType(modifierTypes.TM_COMMON, 1),
@@ -1246,6 +1261,7 @@ const modifierPool: ModifierPool = {
     }, 3),
     new WeightedModifierType(modifierTypes.DIRE_HIT, 4),
     new WeightedModifierType(modifierTypes.SUPER_LURE, 4),
+    new WeightedModifierType(modifierTypes.SUPER_REPEL, 4),
     new WeightedModifierType(modifierTypes.NUGGET, 5),
     new WeightedModifierType(modifierTypes.EVOLUTION_ITEM, (party: Pokemon[]) => {
       return Math.min(Math.ceil(party[0].scene.currentBattle.waveIndex / 15), 8);
@@ -1265,6 +1281,7 @@ const modifierPool: ModifierPool = {
   [ModifierTier.ULTRA]: [
     new WeightedModifierType(modifierTypes.ULTRA_BALL, 24),
     new WeightedModifierType(modifierTypes.MAX_LURE, 4),
+    new WeightedModifierType(modifierTypes.MAX_REPEL, 4),
     new WeightedModifierType(modifierTypes.BIG_NUGGET, 12),
     new WeightedModifierType(modifierTypes.PP_UP, 9),
     new WeightedModifierType(modifierTypes.PP_MAX, 3),
diff --git a/src/modifier/modifier.ts b/src/modifier/modifier.ts
index 0736831a01e..5a36551972a 100644
--- a/src/modifier/modifier.ts
+++ b/src/modifier/modifier.ts
@@ -310,6 +310,33 @@ export class DoubleBattleChanceBoosterModifier extends LapsingPersistentModifier
   }
 }
 
+export class TrainerBattleChanceBoosterModifier extends LapsingPersistentModifier {
+  constructor(type: ModifierTypes.TrainerBattleChanceBoosterModifierType, battlesLeft: integer, stackCount?: integer) {
+    super(type, battlesLeft, stackCount);
+  }
+
+  match(modifier: Modifier): boolean {
+    if (modifier instanceof TrainerBattleChanceBoosterModifier)
+      return (modifier as TrainerBattleChanceBoosterModifier).battlesLeft === this.battlesLeft;
+    return false;
+  }
+
+  clone(): TrainerBattleChanceBoosterModifier {
+    return new TrainerBattleChanceBoosterModifier(this.type as ModifierTypes.TrainerBattleChanceBoosterModifierType, this.battlesLeft, this.stackCount);
+  }
+
+  getArgs(): any[] {
+    return [ this.battlesLeft ];
+  }
+
+  apply(args: any[]): boolean {
+    const trainerChance = args[0] as Utils.NumberHolder;
+    trainerChance.value = Math.ceil(trainerChance.value / 2);
+
+    return true;
+  }
+}
+
 export class TempBattleStatBoosterModifier extends LapsingPersistentModifier {
   private tempBattleStat: TempBattleStat;