diff --git a/src/data/trainer-config.ts b/src/data/trainer-config.ts
index bc69b611075..f63644ba07e 100644
--- a/src/data/trainer-config.ts
+++ b/src/data/trainer-config.ts
@@ -203,6 +203,7 @@ export class TrainerConfig {
   public modifierRewardFuncs: ModifierTypeFunc[] = [];
   public partyTemplates: TrainerPartyTemplate[];
   public partyTemplateFunc: PartyTemplateFunc;
+  public eventRewardFuncs: ModifierTypeFunc[] = [];
   public partyMemberFuncs: PartyMemberFuncs = {};
   public speciesPools: TrainerTierPools;
   public speciesFilter: PokemonSpeciesFilter;
@@ -546,6 +547,17 @@ export class TrainerConfig {
     return this;
   }
 
+  setEventModifierRewardFuncs(...modifierTypeFuncs: (() => ModifierTypeFunc)[]): TrainerConfig {
+    this.eventRewardFuncs = modifierTypeFuncs.map(func => () => {
+      const modifierTypeFunc = func();
+      const modifierType = modifierTypeFunc();
+      modifierType.withIdFromFunc(modifierTypeFunc);
+      return modifierType;
+    });
+    return this;
+  }
+
+
   setModifierRewardFuncs(...modifierTypeFuncs: (() => ModifierTypeFunc)[]): TrainerConfig {
     this.modifierRewardFuncs = modifierTypeFuncs.map(func => () => {
       const modifierTypeFunc = func();
@@ -1091,6 +1103,8 @@ export class TrainerConfig {
       });
     }
 
+    clone = this.eventTemplateFunc ? clone.setEventTemplateFunc(this.eventTemplateFunc) : clone;
+
     clone = this.speciesPools ? clone.setSpeciesPools(this.speciesPools) : clone;
     clone = this.speciesFilter ? clone.setSpeciesFilter(this.speciesFilter) : clone;
     if (this.specialtyTypes) {
@@ -1147,6 +1161,21 @@ function getGymLeaderPartyTemplate(scene: BattleScene) {
   return getWavePartyTemplate(scene, trainerPartyTemplates.GYM_LEADER_1, trainerPartyTemplates.GYM_LEADER_2, trainerPartyTemplates.GYM_LEADER_3, trainerPartyTemplates.GYM_LEADER_4, trainerPartyTemplates.GYM_LEADER_5);
 }
 
+function setEventModifierReward(scene: BattleScene, ...modifierTypeFuncs: (() => ModifierTypeFunc)[]) {
+  if (scene.eventManager.isEventActive()) {
+    const rewardFuncs = modifierTypeFuncs.map(func => () => {
+      const modifierTypeFunc = func();
+      const modifierType = modifierTypeFunc();
+      modifierType.withIdFromFunc(modifierTypeFunc);
+      return modifierType;
+    });
+
+    this.modifierRewardFuncs.push(...rewardFuncs);
+  }
+
+  return this;
+}
+
 /**
  * Randomly selects one of the `Species` from `speciesPool`, determines its evolution, level, and strength.
  * Then adds Pokemon to scene.
@@ -1828,10 +1857,12 @@ export const trainerConfigs: TrainerConfigs = {
 
   [TrainerType.RIVAL]: new TrainerConfig((t = TrainerType.RIVAL)).setName("Finn").setHasGenders("Ivy").setHasCharSprite().setTitle("Rival").setStaticParty().setEncounterBgm(TrainerType.RIVAL).setBattleBgm("battle_rival").setMixedBattleBgm("battle_rival").setPartyTemplates(trainerPartyTemplates.RIVAL)
     .setModifierRewardFuncs(() => modifierTypes.SUPER_EXP_CHARM, () => modifierTypes.EXP_SHARE)
+    .setEventModifierRewardFuncs(() => modifierTypes.SHINY_CHARM, () => modifierTypes.ABILITY_CHARM)
     .setPartyMemberFunc(0, getRandomPartyMemberFunc([ Species.BULBASAUR, Species.CHARMANDER, Species.SQUIRTLE, Species.CHIKORITA, Species.CYNDAQUIL, Species.TOTODILE, Species.TREECKO, Species.TORCHIC, Species.MUDKIP, Species.TURTWIG, Species.CHIMCHAR, Species.PIPLUP, Species.SNIVY, Species.TEPIG, Species.OSHAWOTT, Species.CHESPIN, Species.FENNEKIN, Species.FROAKIE, Species.ROWLET, Species.LITTEN, Species.POPPLIO, Species.GROOKEY, Species.SCORBUNNY, Species.SOBBLE, Species.SPRIGATITO, Species.FUECOCO, Species.QUAXLY ], TrainerSlot.TRAINER, true))
     .setPartyMemberFunc(1, getRandomPartyMemberFunc([ Species.PIDGEY, Species.HOOTHOOT, Species.TAILLOW, Species.STARLY, Species.PIDOVE, Species.FLETCHLING, Species.PIKIPEK, Species.ROOKIDEE, Species.WATTREL ], TrainerSlot.TRAINER, true)),
   [TrainerType.RIVAL_2]: new TrainerConfig(++t).setName("Finn").setHasGenders("Ivy").setHasCharSprite().setTitle("Rival").setStaticParty().setMoneyMultiplier(1.25).setEncounterBgm(TrainerType.RIVAL).setBattleBgm("battle_rival").setMixedBattleBgm("battle_rival").setPartyTemplates(trainerPartyTemplates.RIVAL_2)
     .setModifierRewardFuncs(() => modifierTypes.EXP_SHARE)
+    .setEventModifierRewardFuncs(scene => setEventModifierReward(scene, () => modifierTypes.SHINY_CHARM))
     .setPartyMemberFunc(0, getRandomPartyMemberFunc([ Species.IVYSAUR, Species.CHARMELEON, Species.WARTORTLE, Species.BAYLEEF, Species.QUILAVA, Species.CROCONAW, Species.GROVYLE, Species.COMBUSKEN, Species.MARSHTOMP, Species.GROTLE, Species.MONFERNO, Species.PRINPLUP, Species.SERVINE, Species.PIGNITE, Species.DEWOTT, Species.QUILLADIN, Species.BRAIXEN, Species.FROGADIER, Species.DARTRIX, Species.TORRACAT, Species.BRIONNE, Species.THWACKEY, Species.RABOOT, Species.DRIZZILE, Species.FLORAGATO, Species.CROCALOR, Species.QUAXWELL ], TrainerSlot.TRAINER, true))
     .setPartyMemberFunc(1, getRandomPartyMemberFunc([ Species.PIDGEOTTO, Species.HOOTHOOT, Species.TAILLOW, Species.STARAVIA, Species.TRANQUILL, Species.FLETCHINDER, Species.TRUMBEAK, Species.CORVISQUIRE, Species.WATTREL ], TrainerSlot.TRAINER, true))
     .setPartyMemberFunc(2, getSpeciesFilterRandomPartyMemberFunc((species: PokemonSpecies) => !pokemonEvolutions.hasOwnProperty(species.speciesId) && !pokemonPrevolutions.hasOwnProperty(species.speciesId) && species.baseTotal >= 450)),
diff --git a/src/field/pokemon.ts b/src/field/pokemon.ts
index a708b2067a7..4cb8390d4f4 100644
--- a/src/field/pokemon.ts
+++ b/src/field/pokemon.ts
@@ -4114,7 +4114,11 @@ export class PlayerPokemon extends Pokemon {
       fusionStarterSpeciesId ? this.scene.gameData.starterData[fusionStarterSpeciesId] : null
     ].filter(d => !!d);
     const amount = new Utils.IntegerHolder(friendship);
-    const starterAmount = new Utils.IntegerHolder(Math.floor(friendship * (this.scene.gameMode.isClassic && friendship > 0 ? CLASSIC_CANDY_FRIENDSHIP_MULTIPLIER : 1) / (fusionStarterSpeciesId ? 2 : 1)));
+    let candyFriendshipMultiplier = CLASSIC_CANDY_FRIENDSHIP_MULTIPLIER;
+    if (this.scene.eventManager.isEventActive()) {
+      candyFriendshipMultiplier *= this.scene.eventManager.getFriendshipMultiplier();
+    }
+    const starterAmount = new Utils.IntegerHolder(Math.floor(friendship * (this.scene.gameMode.isClassic && friendship > 0 ? candyFriendshipMultiplier : 1) / (fusionStarterSpeciesId ? 2 : 1)));
     if (amount.value > 0) {
       this.scene.applyModifier(PokemonFriendshipBoosterModifier, true, this, amount);
       this.scene.applyModifier(PokemonFriendshipBoosterModifier, true, this, starterAmount);
diff --git a/src/modifier/modifier-type.ts b/src/modifier/modifier-type.ts
index f4b59b9d882..cf2d74483f9 100644
--- a/src/modifier/modifier-type.ts
+++ b/src/modifier/modifier-type.ts
@@ -1301,13 +1301,12 @@ function lureWeightFunc(maxBattles: number, weight: number): WeightedModifierTyp
     return !(party[0].scene.gameMode.isClassic && party[0].scene.currentBattle.waveIndex === 199) && (lures.length === 0 || lures.filter(m => m.getMaxBattles() === maxBattles && m.getBattleCount() >= maxBattles * 0.6).length === 0) ? weight : 0;
   };
 }
-
 class WeightedModifierType {
   public modifierType: ModifierType;
   public weight: integer | WeightedModifierTypeWeightFunc;
-  public maxWeight: integer;
+  public maxWeight: integer | WeightedModifierTypeWeightFunc;
 
-  constructor(modifierTypeFunc: ModifierTypeFunc, weight: integer | WeightedModifierTypeWeightFunc, maxWeight?: integer) {
+  constructor(modifierTypeFunc: ModifierTypeFunc, weight: integer | WeightedModifierTypeWeightFunc, maxWeight?: integer | WeightedModifierTypeWeightFunc) {
     this.modifierType = modifierTypeFunc();
     this.modifierType.id = Object.keys(modifierTypes).find(k => modifierTypes[k] === modifierTypeFunc)!; // TODO: is this bang correct?
     this.weight = weight;
@@ -1694,7 +1693,10 @@ const modifierPool: ModifierPool = {
     new WeightedModifierType(modifierTypes.EVOLUTION_ITEM, (party: Pokemon[]) => {
       return Math.min(Math.ceil(party[0].scene.currentBattle.waveIndex / 15), 8);
     }, 8),
-    new WeightedModifierType(modifierTypes.MAP, (party: Pokemon[]) => party[0].scene.gameMode.isClassic && party[0].scene.currentBattle.waveIndex < 180 ? 1 : 0, 1),
+    new WeightedModifierType(modifierTypes.MAP,
+      (party: Pokemon[]) => party[0].scene.gameMode.isClassic && party[0].scene.currentBattle.waveIndex < 180 ? party[0].scene.eventManager.isEventActive() ? 2 : 1 : 0,
+      (party: Pokemon[]) => party[0].scene.eventManager.isEventActive() ? 2 : 1),
+    new WeightedModifierType(modifierTypes.SOOTHE_BELL, (party: Pokemon[]) => party[0].scene.eventManager.isEventActive() ? 3 : 0),
     new WeightedModifierType(modifierTypes.TM_GREAT, 3),
     new WeightedModifierType(modifierTypes.MEMORY_MUSHROOM, (party: Pokemon[]) => {
       if (!party.find(p => p.getLearnableLevelMoves().length)) {
@@ -1762,7 +1764,7 @@ const modifierPool: ModifierPool = {
     new WeightedModifierType(modifierTypes.CANDY_JAR, skipInLastClassicWaveOrDefault(5)),
     new WeightedModifierType(modifierTypes.ATTACK_TYPE_BOOSTER, 9),
     new WeightedModifierType(modifierTypes.TM_ULTRA, 11),
-    new WeightedModifierType(modifierTypes.RARER_CANDY, 4),
+    new WeightedModifierType(modifierTypes.RARER_CANDY, (party: Pokemon[]) => party[0].scene.eventManager.isEventActive() ? 6 : 4),
     new WeightedModifierType(modifierTypes.GOLDEN_PUNCH, skipInLastClassicWaveOrDefault(2)),
     new WeightedModifierType(modifierTypes.IV_SCANNER, skipInLastClassicWaveOrDefault(4)),
     new WeightedModifierType(modifierTypes.EXP_CHARM, skipInLastClassicWaveOrDefault(8)),
@@ -1785,7 +1787,7 @@ const modifierPool: ModifierPool = {
     new WeightedModifierType(modifierTypes.BATON, 2),
     new WeightedModifierType(modifierTypes.SOUL_DEW, 7),
     //new WeightedModifierType(modifierTypes.OVAL_CHARM, 6),
-    new WeightedModifierType(modifierTypes.SOOTHE_BELL, 4),
+    new WeightedModifierType(modifierTypes.SOOTHE_BELL, (party: Pokemon[]) => party[0].scene.eventManager.isEventActive() ? 0 : 4),
     new WeightedModifierType(modifierTypes.ABILITY_CHARM, skipInClassicAfterWave(189, 6)),
     new WeightedModifierType(modifierTypes.FOCUS_BAND, 5),
     new WeightedModifierType(modifierTypes.KINGS_ROCK, 3),
diff --git a/src/phases/trainer-victory-phase.ts b/src/phases/trainer-victory-phase.ts
index fd48b91b1a1..dc1b962f47e 100644
--- a/src/phases/trainer-victory-phase.ts
+++ b/src/phases/trainer-victory-phase.ts
@@ -27,6 +27,12 @@ export class TrainerVictoryPhase extends BattlePhase {
       this.scene.unshiftPhase(new ModifierRewardPhase(this.scene, modifierRewardFunc));
     }
 
+    if (this.scene.eventManager.isEventActive()) {
+      for (const rewardFunc of this.scene.currentBattle.trainer?.config.eventRewardFuncs!) {
+        this.scene.unshiftPhase(new ModifierRewardPhase(this.scene, rewardFunc));
+      }
+    }
+
     const trainerType = this.scene.currentBattle.trainer?.config.trainerType!; // TODO: is this bang correct?
     if (vouchers.hasOwnProperty(TrainerType[trainerType])) {
       if (!this.scene.validateVoucher(vouchers[TrainerType[trainerType]]) && this.scene.currentBattle.trainer?.config.isBoss) {
diff --git a/src/timed-event-manager.ts b/src/timed-event-manager.ts
index 513d21bd2f3..90f1ba0106f 100644
--- a/src/timed-event-manager.ts
+++ b/src/timed-event-manager.ts
@@ -20,6 +20,7 @@ interface TimedEvent extends EventBanner {
   name: string;
   eventType: EventType;
   shinyMultiplier?: number;
+  friendshipMultiplier?: number;
   startDate: Date;
   endDate: Date;
 }
@@ -35,6 +36,19 @@ const timedEvents: TimedEvent[] = [
     yPosition: 120,
     scale: 0.21,
     availableLangs: [ "en", "de", "it", "fr", "ja", "ko", "es", "pt-BR", "zh-CN" ]
+  },
+  {
+    name: "Halloween Update",
+    eventType: EventType.SHINY,
+    shinyMultiplier: 2,
+    friendshipMultiplier: 2,
+    startDate: new Date(Date.UTC(2024, 9, 25, 0)),
+    endDate: new Date(Date.UTC(2024, 10, 4, 0)),
+    bannerKey: "halloween-banner",
+    xPosition: 19,
+    yPosition: 120,
+    scale: 0.21,
+    availableLangs: [ "en", "de", "it", "fr", "ja", "ko", "es", "pt-BR", "zh-CN" ]
   }
 ];
 
@@ -61,6 +75,16 @@ export class TimedEventManager {
     return activeEvents.length > 0;
   }
 
+  getFriendshipMultiplier(): number {
+    let multiplier = 1;
+    const friendshipEvents = timedEvents.filter((te) => this.isActive(te));
+    friendshipEvents.forEach((fe) => {
+      multiplier *= fe.friendshipMultiplier ?? 1;
+    });
+
+    return multiplier;
+  }
+
   getShinyMultiplier(): number {
     let multiplier = 1;
     const shinyEvents = timedEvents.filter((te) => te.eventType === EventType.SHINY && this.isActive(te));