[Feature] Adds Expert Pokemon Breeder Mystery Encounter to the game (#4328)

* Adds Expert Breeder Mystery Encounter to the game

* add achievement for Breeders in Space and remove redundant tests

* rename to Expert Pokemon Breeder

* remove unintentional test code

* remove unintentional test code

* test fix with breeder rename

---------

Co-authored-by: ImperialSympathizer <imperialsympathizer@gmail.com>
Co-authored-by: Jannik Tappert <38758606+CodeTappert@users.noreply.github.com>

public/images/trainer/expert_pokemon_breeder.json

@@ -0,0 +1,41 @@
+{
+	"textures": [
+		{
+			"image": "expert_pokemon_breeder.png",
+			"format": "RGBA8888",
+			"size": {
+				"w": 39,
+				"h": 75
+			},
+			"scale": 1,
+			"frames": [
+				{
+					"filename": "0001.png",
+					"rotated": false,
+					"trimmed": true,
+					"sourceSize": {
+						"w": 80,
+						"h": 80
+					},
+					"spriteSourceSize": {
+						"x": 21,
+						"y": 3,
+						"w": 39,
+						"h": 75
+					},
+					"frame": {
+						"x": 0,
+						"y": 0,
+						"w": 39,
+						"h": 75
+					}
+				}
+			]
+		}
+	],
+	"meta": {
+		"app": "https://www.codeandweb.com/texturepacker",
+		"version": "3.0",
+		"smartupdate": "$TexturePacker:SmartUpdate:cb681265d8dca038a518ab14076fd140:18ff41b1ef6967682643a11695926e58:c59ea3971195f5a395b75223a77d9068$"
+	}
+}

src/data/move.ts

@@ -4859,16 +4859,18 @@ export class RemoveAllSubstitutesAttr extends MoveEffectAttr {
 }
 
 /**
- * Attribute used when a move hits a {@linkcode BattlerTagType} for double damage
+ * Attribute used when a move can deal damage to {@linkcode BattlerTagType}
+ * Moves that always hit but do not deal double damage: Thunder, Fissure, Sky Uppercut,
+ * Smack Down, Hurricane, Thousand Arrows
  * @extends MoveAttr
 */
-export class DealsDoubleDamageToTagAttr extends MoveAttr {
+export class HitsTagAttr extends MoveAttr {
   /** The {@linkcode BattlerTagType} this move hits */
   public tagType: BattlerTagType;
-  /** Should this move deal double damage against {@linkcode DealsDoubleDamageToTagAttr.tagType}? */
+  /** Should this move deal double damage against {@linkcode HitsTagAttr.tagType}? */
   public doubleDamage: boolean;
 
-  constructor(tagType: BattlerTagType, doubleDamage?: boolean) {
+  constructor(tagType: BattlerTagType, doubleDamage: boolean = false) {
     super();
 
     this.tagType = tagType;
@@ -4880,6 +4882,17 @@ export class DealsDoubleDamageToTagAttr extends MoveAttr {
   }
 }
 
+/**
+ * Used for moves that will always hit for a given tag but also doubles damage.
+ * Moves include: Gust, Stomp, Body Slam, Surf, Earthquake, Magnitude, Twister,
+ * Whirlpool, Dragon Rush, Heat Crash, Steam Roller, Flying Press
+ */
+export class HitsTagForDoubleDamageAttr extends HitsTagAttr {
+  constructor(tagType: BattlerTagType) {
+    super(tagType, true);
+  }
+}
+
 export class AddArenaTagAttr extends MoveEffectAttr {
   public tagType: ArenaTagType;
   public turnCount: integer;
@@ -6759,7 +6772,7 @@ export function initMoves() {
     new AttackMove(Moves.CUT, Type.NORMAL, MoveCategory.PHYSICAL, 50, 95, 30, -1, 0, 1)
       .slicingMove(),
     new AttackMove(Moves.GUST, Type.FLYING, MoveCategory.SPECIAL, 40, 100, 35, -1, 0, 1)
-      .attr(DealsDoubleDamageToTagAttr, BattlerTagType.FLYING, true)
+      .attr(HitsTagForDoubleDamageAttr, BattlerTagType.FLYING)
       .windMove(),
     new AttackMove(Moves.WING_ATTACK, Type.FLYING, MoveCategory.PHYSICAL, 60, 100, 35, -1, 0, 1),
     new StatusMove(Moves.WHIRLWIND, Type.NORMAL, -1, 20, -1, -6, 1)
@@ -6777,7 +6790,7 @@ export function initMoves() {
     new AttackMove(Moves.VINE_WHIP, Type.GRASS, MoveCategory.PHYSICAL, 45, 100, 25, -1, 0, 1),
     new AttackMove(Moves.STOMP, Type.NORMAL, MoveCategory.PHYSICAL, 65, 100, 20, 30, 0, 1)
       .attr(AlwaysHitMinimizeAttr)
-      .attr(DealsDoubleDamageToTagAttr, BattlerTagType.MINIMIZED, true)
+      .attr(HitsTagForDoubleDamageAttr, BattlerTagType.MINIMIZED)
       .attr(FlinchAttr),
     new AttackMove(Moves.DOUBLE_KICK, Type.FIGHTING, MoveCategory.PHYSICAL, 30, 100, 30, -1, 0, 1)
       .attr(MultiHitAttr, MultiHitType._2),
@@ -6802,7 +6815,7 @@ export function initMoves() {
     new AttackMove(Moves.TACKLE, Type.NORMAL, MoveCategory.PHYSICAL, 40, 100, 35, -1, 0, 1),
     new AttackMove(Moves.BODY_SLAM, Type.NORMAL, MoveCategory.PHYSICAL, 85, 100, 15, 30, 0, 1)
       .attr(AlwaysHitMinimizeAttr)
-      .attr(DealsDoubleDamageToTagAttr, BattlerTagType.MINIMIZED, true)
+      .attr(HitsTagForDoubleDamageAttr, BattlerTagType.MINIMIZED)
       .attr(StatusEffectAttr, StatusEffect.PARALYSIS),
     new AttackMove(Moves.WRAP, Type.NORMAL, MoveCategory.PHYSICAL, 15, 90, 20, -1, 0, 1)
       .attr(TrapAttr, BattlerTagType.WRAP),
@@ -6870,7 +6883,7 @@ export function initMoves() {
     new AttackMove(Moves.HYDRO_PUMP, Type.WATER, MoveCategory.SPECIAL, 110, 80, 5, -1, 0, 1),
     new AttackMove(Moves.SURF, Type.WATER, MoveCategory.SPECIAL, 90, 100, 15, -1, 0, 1)
       .target(MoveTarget.ALL_NEAR_OTHERS)
-      .attr(DealsDoubleDamageToTagAttr, BattlerTagType.UNDERWATER, true)
+      .attr(HitsTagForDoubleDamageAttr, BattlerTagType.UNDERWATER)
       .attr(GulpMissileTagAttr),
     new AttackMove(Moves.ICE_BEAM, Type.ICE, MoveCategory.SPECIAL, 90, 100, 10, 10, 0, 1)
       .attr(StatusEffectAttr, StatusEffect.FREEZE),
@@ -6953,18 +6966,18 @@ export function initMoves() {
     new AttackMove(Moves.THUNDER, Type.ELECTRIC, MoveCategory.SPECIAL, 110, 70, 10, 30, 0, 1)
       .attr(StatusEffectAttr, StatusEffect.PARALYSIS)
       .attr(ThunderAccuracyAttr)
-      .attr(DealsDoubleDamageToTagAttr, BattlerTagType.FLYING, false),
+      .attr(HitsTagAttr, BattlerTagType.FLYING),
     new AttackMove(Moves.ROCK_THROW, Type.ROCK, MoveCategory.PHYSICAL, 50, 90, 15, -1, 0, 1)
       .makesContact(false),
     new AttackMove(Moves.EARTHQUAKE, Type.GROUND, MoveCategory.PHYSICAL, 100, 100, 10, -1, 0, 1)
-      .attr(DealsDoubleDamageToTagAttr, BattlerTagType.UNDERGROUND, true)
+      .attr(HitsTagForDoubleDamageAttr, BattlerTagType.UNDERGROUND)
       .attr(MovePowerMultiplierAttr, (user, target, move) => user.scene.arena.getTerrainType() === TerrainType.GRASSY && target.isGrounded() ? 0.5 : 1)
       .makesContact(false)
       .target(MoveTarget.ALL_NEAR_OTHERS),
     new AttackMove(Moves.FISSURE, Type.GROUND, MoveCategory.PHYSICAL, 200, 30, 5, -1, 0, 1)
       .attr(OneHitKOAttr)
       .attr(OneHitKOAccuracyAttr)
-      .attr(DealsDoubleDamageToTagAttr, BattlerTagType.UNDERGROUND, false)
+      .attr(HitsTagAttr, BattlerTagType.UNDERGROUND)
       .makesContact(false),
     new AttackMove(Moves.DIG, Type.GROUND, MoveCategory.PHYSICAL, 80, 100, 10, -1, 0, 1)
       .attr(ChargeAttr, ChargeAnim.DIG_CHARGING, i18next.t("moveTriggers:dugAHole", {pokemonName: "{USER}"}), BattlerTagType.UNDERGROUND)
@@ -7353,7 +7366,7 @@ export function initMoves() {
       .attr(PreMoveMessageAttr, magnitudeMessageFunc)
       .attr(MagnitudePowerAttr)
       .attr(MovePowerMultiplierAttr, (user, target, move) => user.scene.arena.getTerrainType() === TerrainType.GRASSY && target.isGrounded() ? 0.5 : 1)
-      .attr(DealsDoubleDamageToTagAttr, BattlerTagType.UNDERGROUND, true)
+      .attr(HitsTagForDoubleDamageAttr, BattlerTagType.UNDERGROUND)
       .makesContact(false)
       .target(MoveTarget.ALL_NEAR_OTHERS),
     new AttackMove(Moves.DYNAMIC_PUNCH, Type.FIGHTING, MoveCategory.PHYSICAL, 100, 50, 5, 100, 0, 2)
@@ -7409,7 +7422,7 @@ export function initMoves() {
     new AttackMove(Moves.CROSS_CHOP, Type.FIGHTING, MoveCategory.PHYSICAL, 100, 80, 5, -1, 0, 2)
       .attr(HighCritAttr),
     new AttackMove(Moves.TWISTER, Type.DRAGON, MoveCategory.SPECIAL, 40, 100, 20, 20, 0, 2)
-      .attr(DealsDoubleDamageToTagAttr, BattlerTagType.FLYING, true)
+      .attr(HitsTagForDoubleDamageAttr, BattlerTagType.FLYING)
       .attr(FlinchAttr)
       .windMove()
       .target(MoveTarget.ALL_NEAR_ENEMIES),
@@ -7441,7 +7454,7 @@ export function initMoves() {
       .attr(StatStageChangeAttr, [ Stat.DEF ], -1),
     new AttackMove(Moves.WHIRLPOOL, Type.WATER, MoveCategory.SPECIAL, 35, 85, 15, -1, 0, 2)
       .attr(TrapAttr, BattlerTagType.WHIRLPOOL)
-      .attr(DealsDoubleDamageToTagAttr, BattlerTagType.UNDERWATER, true),
+      .attr(HitsTagForDoubleDamageAttr, BattlerTagType.UNDERWATER),
     new AttackMove(Moves.BEAT_UP, Type.DARK, MoveCategory.PHYSICAL, -1, 100, 10, -1, 0, 2)
       .attr(MultiHitAttr, MultiHitType.BEAT_UP)
       .attr(BeatUpAttr)
@@ -7664,7 +7677,7 @@ export function initMoves() {
     new AttackMove(Moves.EXTRASENSORY, Type.PSYCHIC, MoveCategory.SPECIAL, 80, 100, 20, 10, 0, 3)
       .attr(FlinchAttr),
     new AttackMove(Moves.SKY_UPPERCUT, Type.FIGHTING, MoveCategory.PHYSICAL, 85, 90, 15, -1, 0, 3)
-      .attr(DealsDoubleDamageToTagAttr, BattlerTagType.FLYING)
+      .attr(HitsTagAttr, BattlerTagType.FLYING)
       .punchingMove(),
     new AttackMove(Moves.SAND_TOMB, Type.GROUND, MoveCategory.PHYSICAL, 35, 85, 15, -1, 0, 3)
       .attr(TrapAttr, BattlerTagType.SAND_TOMB)
@@ -7896,7 +7909,7 @@ export function initMoves() {
       .pulseMove(),
     new AttackMove(Moves.DRAGON_RUSH, Type.DRAGON, MoveCategory.PHYSICAL, 100, 75, 10, 20, 0, 4)
       .attr(AlwaysHitMinimizeAttr)
-      .attr(DealsDoubleDamageToTagAttr, BattlerTagType.MINIMIZED, true)
+      .attr(HitsTagForDoubleDamageAttr, BattlerTagType.MINIMIZED)
       .attr(FlinchAttr),
     new AttackMove(Moves.POWER_GEM, Type.ROCK, MoveCategory.SPECIAL, 80, 100, 20, -1, 0, 4),
     new AttackMove(Moves.DRAIN_PUNCH, Type.FIGHTING, MoveCategory.PHYSICAL, 75, 100, 10, -1, 0, 4)
@@ -8093,7 +8106,7 @@ export function initMoves() {
       .attr(AddBattlerTagAttr, BattlerTagType.IGNORE_FLYING, false, false, 1, 1, true)
       .attr(AddBattlerTagAttr, BattlerTagType.INTERRUPTED)
       .attr(RemoveBattlerTagAttr, [BattlerTagType.FLYING, BattlerTagType.MAGNET_RISEN])
-      .attr(DealsDoubleDamageToTagAttr, BattlerTagType.FLYING, false)
+      .attr(HitsTagAttr, BattlerTagType.FLYING)
       .makesContact(false),
     new AttackMove(Moves.STORM_THROW, Type.FIGHTING, MoveCategory.PHYSICAL, 60, 100, 10, -1, 0, 5)
       .attr(CritOnlyAttr),
@@ -8108,7 +8121,7 @@ export function initMoves() {
     new AttackMove(Moves.HEAVY_SLAM, Type.STEEL, MoveCategory.PHYSICAL, -1, 100, 10, -1, 0, 5)
       .attr(AlwaysHitMinimizeAttr)
       .attr(CompareWeightPowerAttr)
-      .attr(DealsDoubleDamageToTagAttr, BattlerTagType.MINIMIZED, true),
+      .attr(HitsTagForDoubleDamageAttr, BattlerTagType.MINIMIZED),
     new AttackMove(Moves.SYNCHRONOISE, Type.PSYCHIC, MoveCategory.SPECIAL, 120, 100, 10, -1, 0, 5)
       .target(MoveTarget.ALL_NEAR_OTHERS)
       .condition(unknownTypeCondition)
@@ -8261,12 +8274,12 @@ export function initMoves() {
     new AttackMove(Moves.HEAT_CRASH, Type.FIRE, MoveCategory.PHYSICAL, -1, 100, 10, -1, 0, 5)
       .attr(AlwaysHitMinimizeAttr)
       .attr(CompareWeightPowerAttr)
-      .attr(DealsDoubleDamageToTagAttr, BattlerTagType.MINIMIZED, true),
+      .attr(HitsTagForDoubleDamageAttr, BattlerTagType.MINIMIZED),
     new AttackMove(Moves.LEAF_TORNADO, Type.GRASS, MoveCategory.SPECIAL, 65, 90, 10, 50, 0, 5)
       .attr(StatStageChangeAttr, [ Stat.ACC ], -1),
     new AttackMove(Moves.STEAMROLLER, Type.BUG, MoveCategory.PHYSICAL, 65, 100, 20, 30, 0, 5)
       .attr(AlwaysHitMinimizeAttr)
-      .attr(DealsDoubleDamageToTagAttr, BattlerTagType.MINIMIZED, true)
+      .attr(HitsTagForDoubleDamageAttr, BattlerTagType.MINIMIZED)
       .attr(FlinchAttr),
     new SelfStatusMove(Moves.COTTON_GUARD, Type.GRASS, -1, 10, -1, 0, 5)
       .attr(StatStageChangeAttr, [ Stat.DEF ], 3, true),
@@ -8279,7 +8292,7 @@ export function initMoves() {
     new AttackMove(Moves.HURRICANE, Type.FLYING, MoveCategory.SPECIAL, 110, 70, 10, 30, 0, 5)
       .attr(ThunderAccuracyAttr)
       .attr(ConfuseAttr)
-      .attr(DealsDoubleDamageToTagAttr, BattlerTagType.FLYING, false)
+      .attr(HitsTagAttr, BattlerTagType.FLYING)
       .windMove(),
     new AttackMove(Moves.HEAD_CHARGE, Type.NORMAL, MoveCategory.PHYSICAL, 120, 100, 15, -1, 0, 5)
       .attr(RecoilAttr)
@@ -8335,7 +8348,7 @@ export function initMoves() {
     new AttackMove(Moves.FLYING_PRESS, Type.FIGHTING, MoveCategory.PHYSICAL, 100, 95, 10, -1, 0, 6)
       .attr(AlwaysHitMinimizeAttr)
       .attr(FlyingTypeMultiplierAttr)
-      .attr(DealsDoubleDamageToTagAttr, BattlerTagType.MINIMIZED, true)
+      .attr(HitsTagForDoubleDamageAttr, BattlerTagType.MINIMIZED)
       .condition(failOnGravityCondition),
     new StatusMove(Moves.MAT_BLOCK, Type.FIGHTING, -1, 10, -1, 0, 6)
       .target(MoveTarget.USER_SIDE)
@@ -8506,8 +8519,8 @@ export function initMoves() {
     new AttackMove(Moves.THOUSAND_ARROWS, Type.GROUND, MoveCategory.PHYSICAL, 90, 100, 10, -1, 0, 6)
       .attr(NeutralDamageAgainstFlyingTypeMultiplierAttr)
       .attr(AddBattlerTagAttr, BattlerTagType.IGNORE_FLYING, false, false, 1, 1, true)
-      .attr(DealsDoubleDamageToTagAttr, BattlerTagType.FLYING, false)
-      .attr(DealsDoubleDamageToTagAttr, BattlerTagType.MAGNET_RISEN, false)
+      .attr(HitsTagAttr, BattlerTagType.FLYING)
+      .attr(HitsTagAttr, BattlerTagType.MAGNET_RISEN)
       .attr(AddBattlerTagAttr, BattlerTagType.INTERRUPTED)
       .attr(RemoveBattlerTagAttr, [BattlerTagType.FLYING, BattlerTagType.MAGNET_RISEN])
       .makesContact(false)
@@ -8765,7 +8778,7 @@ export function initMoves() {
       .ignoresVirtual(),
     new AttackMove(Moves.MALICIOUS_MOONSAULT, Type.DARK, MoveCategory.PHYSICAL, 180, -1, 1, -1, 0, 7)
       .attr(AlwaysHitMinimizeAttr)
-      .attr(DealsDoubleDamageToTagAttr, BattlerTagType.MINIMIZED, true)
+      .attr(HitsTagAttr, BattlerTagType.MINIMIZED, true)
       .partial()
       .ignoresVirtual(),
     new AttackMove(Moves.OCEANIC_OPERETTA, Type.WATER, MoveCategory.SPECIAL, 195, -1, 1, -1, 0, 7)

src/data/mystery-encounters/encounters/bug-type-superfan-encounter.ts

@@ -9,6 +9,7 @@ import {
   transitionMysteryEncounterIntroVisuals,
 } from "#app/data/mystery-encounters/utils/encounter-phase-utils";
 import {
+  getRandomPartyMemberFunc,
   trainerConfigs,
   TrainerPartyCompoundTemplate,
   TrainerPartyTemplate,
@@ -17,14 +18,12 @@ import {
 import { MysteryEncounterType } from "#enums/mystery-encounter-type";
 import { PartyMemberStrength } from "#enums/party-member-strength";
 import BattleScene from "#app/battle-scene";
-import * as Utils from "#app/utils";
 import { isNullOrUndefined, randSeedInt, randSeedShuffle } from "#app/utils";
 import MysteryEncounter, { MysteryEncounterBuilder } from "#app/data/mystery-encounters/mystery-encounter";
 import { MysteryEncounterTier } from "#enums/mystery-encounter-tier";
 import { TrainerType } from "#enums/trainer-type";
 import { Species } from "#enums/species";
-import Pokemon, { EnemyPokemon, PlayerPokemon, PokemonMove } from "#app/field/pokemon";
-import { getPokemonSpecies } from "#app/data/pokemon-species";
+import Pokemon, { PlayerPokemon, PokemonMove } from "#app/field/pokemon";
 import { getEncounterText, showEncounterDialogue } from "#app/data/mystery-encounters/utils/encounter-dialogue-utils";
 import { LearnMovePhase } from "#app/phases/learn-move-phase";
 import { Moves } from "#enums/moves";
@@ -584,16 +583,6 @@ function getTrainerConfigForWave(waveIndex: number) {
   return config;
 }
 
-function getRandomPartyMemberFunc(speciesPool: Species[], trainerSlot: TrainerSlot = TrainerSlot.TRAINER, ignoreEvolution: boolean = false, postProcess?: (enemyPokemon: EnemyPokemon) => void) {
-  return (scene: BattleScene, level: number, strength: PartyMemberStrength) => {
-    let species = Utils.randSeedItem(speciesPool);
-    if (!ignoreEvolution) {
-      species = getPokemonSpecies(species).getTrainerSpeciesForLevel(level, true, strength);
-    }
-    return scene.addEnemyPokemon(getPokemonSpecies(species), level, trainerSlot, undefined, undefined, postProcess);
-  };
-}
-
 function doBugTypeMoveTutor(scene: BattleScene): Promise<void> {
   return new Promise<void>(async resolve => {
     const moveOptions = scene.currentBattle.mysteryEncounter!.misc.moveTutorOptions;

src/data/mystery-encounters/encounters/dancing-lessons-encounter.ts

@@ -133,7 +133,7 @@ export const DancingLessonsEncounter: MysteryEncounter =
       }
 
       const oricorioData = new PokemonData(enemyPokemon);
-      const oricorio = scene.addEnemyPokemon(species, scene.currentBattle.enemyLevels![0], TrainerSlot.NONE, false, oricorioData);
+      const oricorio = scene.addEnemyPokemon(species, level, TrainerSlot.NONE, false, oricorioData);
 
       // Adds a real Pokemon sprite to the field (required for the animation)
       scene.getEnemyParty().forEach(enemyPokemon => {

src/data/mystery-encounters/encounters/the-expert-pokemon-breeder-encounter.ts

@@ -0,0 +1,549 @@
+import { EnemyPartyConfig, generateModifierType, initBattleWithEnemyConfig, setEncounterRewards, } from "#app/data/mystery-encounters/utils/encounter-phase-utils";
+import { trainerConfigs } from "#app/data/trainer-config";
+import { modifierTypes, PokemonHeldItemModifierType } from "#app/modifier/modifier-type";
+import { MysteryEncounterType } from "#enums/mystery-encounter-type";
+import BattleScene from "#app/battle-scene";
+import { randSeedShuffle } from "#app/utils";
+import MysteryEncounter, { MysteryEncounterBuilder } from "../mystery-encounter";
+import { MysteryEncounterTier } from "#enums/mystery-encounter-tier";
+import { CLASSIC_MODE_MYSTERY_ENCOUNTER_WAVES } from "#app/game-mode";
+import { Biome } from "#enums/biome";
+import { TrainerType } from "#enums/trainer-type";
+import i18next from "i18next";
+import { Species } from "#enums/species";
+import { getPokemonSpecies, speciesStarters } from "#app/data/pokemon-species";
+import { Nature } from "#enums/nature";
+import { Moves } from "#enums/moves";
+import { Type } from "#app/data/type";
+import { Stat } from "#enums/stat";
+import { PlayerPokemon } from "#app/field/pokemon";
+import { getEncounterText } from "#app/data/mystery-encounters/utils/encounter-dialogue-utils";
+import { IEggOptions } from "#app/data/egg";
+import { EggSourceType } from "#enums/egg-source-types";
+import { EggTier } from "#enums/egg-type";
+import { MysteryEncounterOptionBuilder } from "#app/data/mystery-encounters/mystery-encounter-option";
+import { MysteryEncounterOptionMode } from "#enums/mystery-encounter-option-mode";
+import { achvs } from "#app/system/achv";
+
+/** the i18n namespace for the encounter */
+const namespace = "mysteryEncounter:expertPokemonBreeder";
+
+const trainerNameKey = "trainerNames:expert_pokemon_breeder";
+
+const FIRST_STAGE_EVOLUTION_WAVE = 30;
+const SECOND_STAGE_EVOLUTION_WAVE = 45;
+const FINAL_STAGE_EVOLUTION_WAVE = 60;
+
+const FRIENDSHIP_ADDED = 20;
+
+class BreederSpeciesEvolution  {
+  species: Species;
+  evolution: number;
+
+  constructor(species: Species, evolution: number) {
+    this.species = species;
+    this.evolution = evolution;
+  }
+}
+
+const POOL_1_POKEMON: (Species | BreederSpeciesEvolution)[][] = [
+  [Species.MUNCHLAX, new BreederSpeciesEvolution(Species.SNORLAX, SECOND_STAGE_EVOLUTION_WAVE)],
+  [Species.HAPPINY, new BreederSpeciesEvolution(Species.CHANSEY, FIRST_STAGE_EVOLUTION_WAVE), new BreederSpeciesEvolution(Species.BLISSEY, FINAL_STAGE_EVOLUTION_WAVE)],
+  [Species.MAGBY, new BreederSpeciesEvolution(Species.MAGMAR, FIRST_STAGE_EVOLUTION_WAVE), new BreederSpeciesEvolution(Species.MAGMORTAR, FINAL_STAGE_EVOLUTION_WAVE)],
+  [Species.ELEKID, new BreederSpeciesEvolution(Species.ELECTABUZZ, FIRST_STAGE_EVOLUTION_WAVE), new BreederSpeciesEvolution(Species.ELECTIVIRE, FINAL_STAGE_EVOLUTION_WAVE)],
+  [Species.RIOLU, new BreederSpeciesEvolution(Species.LUCARIO, SECOND_STAGE_EVOLUTION_WAVE)],
+  [Species.BUDEW, new BreederSpeciesEvolution(Species.ROSELIA, FIRST_STAGE_EVOLUTION_WAVE), new BreederSpeciesEvolution(Species.ROSERADE, FINAL_STAGE_EVOLUTION_WAVE)],
+  [Species.TOXEL, new BreederSpeciesEvolution(Species.TOXTRICITY, SECOND_STAGE_EVOLUTION_WAVE)],
+  [Species.MIME_JR, new BreederSpeciesEvolution(Species.GALAR_MR_MIME, FIRST_STAGE_EVOLUTION_WAVE), new BreederSpeciesEvolution(Species.MR_RIME, FINAL_STAGE_EVOLUTION_WAVE)]
+];
+
+const POOL_2_POKEMON: (Species | BreederSpeciesEvolution)[][] = [
+  [Species.PICHU, new BreederSpeciesEvolution(Species.PIKACHU, FIRST_STAGE_EVOLUTION_WAVE), new BreederSpeciesEvolution(Species.RAICHU, FINAL_STAGE_EVOLUTION_WAVE)],
+  [Species.PICHU, new BreederSpeciesEvolution(Species.PIKACHU, FIRST_STAGE_EVOLUTION_WAVE), new BreederSpeciesEvolution(Species.ALOLA_RAICHU, FINAL_STAGE_EVOLUTION_WAVE)],
+  [Species.JYNX],
+  [Species.TYROGUE, new BreederSpeciesEvolution(Species.HITMONLEE, SECOND_STAGE_EVOLUTION_WAVE)],
+  [Species.TYROGUE, new BreederSpeciesEvolution(Species.HITMONCHAN, SECOND_STAGE_EVOLUTION_WAVE)],
+  [Species.TYROGUE, new BreederSpeciesEvolution(Species.HITMONTOP, SECOND_STAGE_EVOLUTION_WAVE)],
+  [Species.IGGLYBUFF, new BreederSpeciesEvolution(Species.JIGGLYPUFF, FIRST_STAGE_EVOLUTION_WAVE), new BreederSpeciesEvolution(Species.WIGGLYTUFF, FINAL_STAGE_EVOLUTION_WAVE)],
+  [Species.AZURILL, new BreederSpeciesEvolution(Species.MARILL, FIRST_STAGE_EVOLUTION_WAVE), new BreederSpeciesEvolution(Species.AZUMARILL, FINAL_STAGE_EVOLUTION_WAVE)],
+  [Species.WYNAUT, new BreederSpeciesEvolution(Species.WOBBUFFET, SECOND_STAGE_EVOLUTION_WAVE)],
+  [Species.CHINGLING, new BreederSpeciesEvolution(Species.CHIMECHO, SECOND_STAGE_EVOLUTION_WAVE)],
+  [Species.BONSLY, new BreederSpeciesEvolution(Species.SUDOWOODO, SECOND_STAGE_EVOLUTION_WAVE)],
+  [Species.MANTYKE, new BreederSpeciesEvolution(Species.MANTINE, SECOND_STAGE_EVOLUTION_WAVE)]
+];
+
+/**
+ * The Expert Pokémon Breeder encounter.
+ * @see {@link https://github.com/pagefaultgames/pokerogue/issues/3818 | GitHub Issue #3818}
+ * @see For biome requirements check {@linkcode mysteryEncountersByBiome}
+ */
+export const TheExpertPokemonBreederEncounter: MysteryEncounter =
+  MysteryEncounterBuilder.withEncounterType(MysteryEncounterType.THE_EXPERT_POKEMON_BREEDER)
+    .withEncounterTier(MysteryEncounterTier.ULTRA)
+    .withSceneWaveRangeRequirement(...CLASSIC_MODE_MYSTERY_ENCOUNTER_WAVES)
+    .withScenePartySizeRequirement(4, 6, true) // Must have at least 4 legal pokemon in party
+    .withIntroSpriteConfigs([]) // These are set in onInit()
+    .withIntroDialogue([
+      {
+        text: `${namespace}.intro`,
+      },
+      {
+        speaker: trainerNameKey,
+        text: `${namespace}.intro_dialogue`,
+      },
+    ])
+    .withOnInit((scene: BattleScene) => {
+      const encounter = scene.currentBattle.mysteryEncounter!;
+      const waveIndex = scene.currentBattle.waveIndex;
+      // Calculates what trainers are available for battle in the encounter
+
+      // If player is in space biome, uses special "Space" version of the trainer
+      encounter.enemyPartyConfigs = [
+        getPartyConfig(scene)
+      ];
+
+      const cleffaSpecies = waveIndex < FIRST_STAGE_EVOLUTION_WAVE ? Species.CLEFFA : waveIndex < FINAL_STAGE_EVOLUTION_WAVE ? Species.CLEFAIRY : Species.CLEFABLE;
+      encounter.spriteConfigs = [
+        {
+          spriteKey: cleffaSpecies.toString(),
+          fileRoot: "pokemon",
+          hasShadow: true,
+          repeat: true,
+          x: 14,
+          y: -2,
+          yShadow: -2
+        },
+        {
+          spriteKey: "expert_pokemon_breeder",
+          fileRoot: "trainer",
+          hasShadow: true,
+          x: -14,
+          y: 4,
+          yShadow: 2
+        },
+      ];
+
+      // Determine the 3 pokemon the player can battle with
+      let partyCopy = scene.getParty().slice(0);
+      partyCopy = partyCopy
+        .filter(p => p.isAllowedInBattle())
+        .sort((a, b) => a.friendship - b.friendship);
+
+      const pokemon1 = partyCopy[0];
+      const pokemon2 = partyCopy[1];
+      const pokemon3 = partyCopy[2];
+      encounter.setDialogueToken("pokemon1Name", pokemon1.getNameToRender());
+      encounter.setDialogueToken("pokemon2Name", pokemon2.getNameToRender());
+      encounter.setDialogueToken("pokemon3Name", pokemon3.getNameToRender());
+
+      // Dialogue and egg calcs for Pokemon 1
+      const [pokemon1CommonEggs, pokemon1RareEggs] = calculateEggRewardsForPokemon(pokemon1);
+      let pokemon1Tooltip = getEncounterText(scene, `${namespace}.option.1.tooltip_base`)!;
+      if (pokemon1RareEggs > 0) {
+        const eggsText = i18next.t(`${namespace}.numEggs`, { count: pokemon1RareEggs, rarity: i18next.t("egg:greatTier") });
+        pokemon1Tooltip += i18next.t(`${namespace}.eggs_tooltip`, { eggs: eggsText });
+        encounter.setDialogueToken("pokemon1RareEggs", eggsText);
+      }
+      if (pokemon1CommonEggs > 0) {
+        const eggsText = i18next.t(`${namespace}.numEggs`, { count: pokemon1CommonEggs, rarity: i18next.t("egg:defaultTier") });
+        pokemon1Tooltip += i18next.t(`${namespace}.eggs_tooltip`, { eggs: eggsText });
+        encounter.setDialogueToken("pokemon1CommonEggs", eggsText);
+      }
+      encounter.options[0].dialogue!.buttonTooltip = pokemon1Tooltip;
+
+      // Dialogue and egg calcs for Pokemon 2
+      const [pokemon2CommonEggs, pokemon2RareEggs] = calculateEggRewardsForPokemon(pokemon2);
+      let pokemon2Tooltip = getEncounterText(scene, `${namespace}.option.2.tooltip_base`)!;
+      if (pokemon2RareEggs > 0) {
+        const eggsText = i18next.t(`${namespace}.numEggs`, { count: pokemon2RareEggs, rarity: i18next.t("egg:greatTier") });
+        pokemon2Tooltip += i18next.t(`${namespace}.eggs_tooltip`, { eggs: eggsText });
+        encounter.setDialogueToken("pokemon2RareEggs", eggsText);
+      }
+      if (pokemon2CommonEggs > 0) {
+        const eggsText = i18next.t(`${namespace}.numEggs`, { count: pokemon2CommonEggs, rarity: i18next.t("egg:defaultTier") });
+        pokemon2Tooltip += i18next.t(`${namespace}.eggs_tooltip`, { eggs: eggsText });
+        encounter.setDialogueToken("pokemon1CommonEggs", eggsText);
+      }
+      encounter.options[1].dialogue!.buttonTooltip = pokemon2Tooltip;
+
+      // Dialogue and egg calcs for Pokemon 3
+      const [pokemon3CommonEggs, pokemon3RareEggs] = calculateEggRewardsForPokemon(pokemon3);
+      let pokemon3Tooltip = getEncounterText(scene, `${namespace}.option.3.tooltip_base`)!;
+      if (pokemon3RareEggs > 0) {
+        const eggsText = i18next.t(`${namespace}.numEggs`, { count: pokemon3RareEggs, rarity: i18next.t("egg:greatTier") });
+        pokemon3Tooltip += i18next.t(`${namespace}.eggs_tooltip`, { eggs: eggsText });
+        encounter.setDialogueToken("pokemon3RareEggs", eggsText);
+      }
+      if (pokemon3CommonEggs > 0) {
+        const eggsText = i18next.t(`${namespace}.numEggs`, { count: pokemon3CommonEggs, rarity: i18next.t("egg:defaultTier") });
+        pokemon3Tooltip += i18next.t(`${namespace}.eggs_tooltip`, { eggs: eggsText });
+        encounter.setDialogueToken("pokemon3CommonEggs", eggsText);
+      }
+      encounter.options[2].dialogue!.buttonTooltip = pokemon3Tooltip;
+
+      encounter.misc = {
+        pokemon1,
+        pokemon1CommonEggs,
+        pokemon1RareEggs,
+        pokemon2,
+        pokemon2CommonEggs,
+        pokemon2RareEggs,
+        pokemon3,
+        pokemon3CommonEggs,
+        pokemon3RareEggs
+      };
+
+      return true;
+    })
+    .withTitle(`${namespace}.title`)
+    .withDescription(`${namespace}.description`)
+    .withQuery(`${namespace}.query`)
+    .withOption(
+      MysteryEncounterOptionBuilder
+        .newOptionWithMode(MysteryEncounterOptionMode.DEFAULT)
+        .withDialogue({
+          buttonLabel: `${namespace}.option.1.label`,
+          selected: [
+            {
+              speaker: trainerNameKey,
+              text: `${namespace}.option.selected`,
+            },
+          ],
+        })
+        .withOptionPhase(async (scene: BattleScene) => {
+          const encounter = scene.currentBattle.mysteryEncounter!;
+          // Spawn battle with first pokemon
+          const config: EnemyPartyConfig = encounter.enemyPartyConfigs[0];
+
+          const { pokemon1, pokemon1CommonEggs, pokemon1RareEggs } = encounter.misc;
+          encounter.setDialogueToken("chosenPokemon", pokemon1.getNameToRender());
+          const eggOptions = getEggOptions(scene, pokemon1CommonEggs, pokemon1RareEggs);
+          setEncounterRewards(scene, { fillRemaining: true }, eggOptions);
+
+          // Remove all Pokemon from the party except the chosen Pokemon
+          removePokemonFromPartyAndStoreHeldItems(scene, encounter, pokemon1);
+
+          // Configure outro dialogue for egg rewards
+          encounter.dialogue.outro = [
+            {
+              speaker: trainerNameKey,
+              text: `${namespace}.outro`,
+            },
+          ];
+          if (encounter.dialogueTokens.hasOwnProperty("pokemon1CommonEggs")) {
+            encounter.dialogue.outro.push({
+              text: i18next.t(`${namespace}.gained_eggs`, { numEggs: encounter.dialogueTokens["pokemon1CommonEggs"] }),
+            });
+          }
+          if (encounter.dialogueTokens.hasOwnProperty("pokemon1RareEggs")) {
+            encounter.dialogue.outro.push({
+              text: i18next.t(`${namespace}.gained_eggs`, { numEggs: encounter.dialogueTokens["pokemon1RareEggs"] }),
+            });
+          }
+
+          initBattleWithEnemyConfig(scene, config);
+        })
+        .withPostOptionPhase(async (scene: BattleScene) => {
+          // Give achievement if in Space biome
+          checkAchievement(scene);
+          // Give 20 friendship to the chosen pokemon
+          scene.currentBattle.mysteryEncounter!.misc.pokemon1.addFriendship(FRIENDSHIP_ADDED);
+          await restorePartyAndHeldItems(scene);
+        })
+        .build()
+    )
+    .withOption(
+      MysteryEncounterOptionBuilder
+        .newOptionWithMode(MysteryEncounterOptionMode.DEFAULT)
+        .withDialogue({
+          buttonLabel: `${namespace}.option.2.label`,
+          selected: [
+            {
+              speaker: trainerNameKey,
+              text: `${namespace}.option.selected`,
+            },
+          ],
+        })
+        .withOptionPhase(async (scene: BattleScene) => {
+          const encounter = scene.currentBattle.mysteryEncounter!;
+          // Spawn battle with second pokemon
+          const config: EnemyPartyConfig = encounter.enemyPartyConfigs[0];
+
+          const { pokemon2, pokemon2CommonEggs, pokemon2RareEggs } = encounter.misc;
+          encounter.setDialogueToken("chosenPokemon", pokemon2.getNameToRender());
+          const eggOptions = getEggOptions(scene, pokemon2CommonEggs, pokemon2RareEggs);
+          setEncounterRewards(scene, { fillRemaining: true }, eggOptions);
+
+          // Remove all Pokemon from the party except the chosen Pokemon
+          removePokemonFromPartyAndStoreHeldItems(scene, encounter, pokemon2);
+
+          // Configure outro dialogue for egg rewards
+          encounter.dialogue.outro = [
+            {
+              speaker: trainerNameKey,
+              text: `${namespace}.outro`,
+            },
+          ];
+          if (encounter.dialogueTokens.hasOwnProperty("pokemon2CommonEggs")) {
+            encounter.dialogue.outro.push({
+              text: i18next.t(`${namespace}.gained_eggs`, { numEggs: encounter.dialogueTokens["pokemon2CommonEggs"] }),
+            });
+          }
+          if (encounter.dialogueTokens.hasOwnProperty("pokemon2RareEggs")) {
+            encounter.dialogue.outro.push({
+              text: i18next.t(`${namespace}.gained_eggs`, { numEggs: encounter.dialogueTokens["pokemon2RareEggs"] }),
+            });
+          }
+
+          initBattleWithEnemyConfig(scene, config);
+        })
+        .withPostOptionPhase(async (scene: BattleScene) => {
+          // Give achievement if in Space biome
+          checkAchievement(scene);
+          // Give 20 friendship to the chosen pokemon
+          scene.currentBattle.mysteryEncounter!.misc.pokemon2.addFriendship(FRIENDSHIP_ADDED);
+          await restorePartyAndHeldItems(scene);
+        })
+        .build()
+    )
+    .withOption(
+      MysteryEncounterOptionBuilder
+        .newOptionWithMode(MysteryEncounterOptionMode.DEFAULT)
+        .withDialogue({
+          buttonLabel: `${namespace}.option.3.label`,
+          selected: [
+            {
+              speaker: trainerNameKey,
+              text: `${namespace}.option.selected`,
+            },
+          ],
+        })
+        .withOptionPhase(async (scene: BattleScene) => {
+          const encounter = scene.currentBattle.mysteryEncounter!;
+          // Spawn battle with third pokemon
+          const config: EnemyPartyConfig = encounter.enemyPartyConfigs[0];
+
+          const { pokemon3, pokemon3CommonEggs, pokemon3RareEggs } = encounter.misc;
+          encounter.setDialogueToken("chosenPokemon", pokemon3.getNameToRender());
+          const eggOptions = getEggOptions(scene, pokemon3CommonEggs, pokemon3RareEggs);
+          setEncounterRewards(scene, { fillRemaining: true }, eggOptions);
+
+          // Remove all Pokemon from the party except the chosen Pokemon
+          removePokemonFromPartyAndStoreHeldItems(scene, encounter, pokemon3);
+
+          // Configure outro dialogue for egg rewards
+          encounter.dialogue.outro = [
+            {
+              speaker: trainerNameKey,
+              text: `${namespace}.outro`,
+            },
+          ];
+          if (encounter.dialogueTokens.hasOwnProperty("pokemon3CommonEggs")) {
+            encounter.dialogue.outro.push({
+              text: i18next.t(`${namespace}.gained_eggs`, { numEggs: encounter.dialogueTokens["pokemon3CommonEggs"] }),
+            });
+          }
+          if (encounter.dialogueTokens.hasOwnProperty("pokemon3RareEggs")) {
+            encounter.dialogue.outro.push({
+              text: i18next.t(`${namespace}.gained_eggs`, { numEggs: encounter.dialogueTokens["pokemon3RareEggs"] }),
+            });
+          }
+
+          initBattleWithEnemyConfig(scene, config);
+        })
+        .withPostOptionPhase(async (scene: BattleScene) => {
+          // Give achievement if in Space biome
+          checkAchievement(scene);
+          // Give 20 friendship to the chosen pokemon
+          scene.currentBattle.mysteryEncounter!.misc.pokemon3.addFriendship(FRIENDSHIP_ADDED);
+          await restorePartyAndHeldItems(scene);
+        })
+        .build()
+    )
+    .withOutroDialogue([
+      {
+        text: `${namespace}.outro`,
+      },
+    ])
+    .build();
+
+function getPartyConfig(scene: BattleScene): EnemyPartyConfig {
+  // Bug type superfan trainer config
+  const waveIndex = scene.currentBattle.waveIndex;
+  const breederConfig = trainerConfigs[TrainerType.EXPERT_POKEMON_BREEDER].clone();
+  breederConfig.name = i18next.t(trainerNameKey);
+
+  // First mon is *always* this special cleffa
+  const cleffaSpecies = waveIndex < FIRST_STAGE_EVOLUTION_WAVE ? Species.CLEFFA : waveIndex < FINAL_STAGE_EVOLUTION_WAVE ? Species.CLEFAIRY : Species.CLEFABLE;
+  const baseConfig: EnemyPartyConfig = {
+    trainerType: TrainerType.EXPERT_POKEMON_BREEDER,
+    pokemonConfigs: [
+      {
+        nickname: i18next.t(`${namespace}.cleffa_1_nickname`),
+        species: getPokemonSpecies(cleffaSpecies),
+        isBoss: false,
+        abilityIndex: 1, // Magic Guard
+        shiny: false,
+        nature: Nature.ADAMANT,
+        moveSet: [Moves.METEOR_MASH, Moves.FIRE_PUNCH, Moves.ICE_PUNCH, Moves.THUNDER_PUNCH],
+        ivs: [31, 31, 31, 31, 31, 31],
+        modifierConfigs: [
+          {
+            modifier: generateModifierType(scene, modifierTypes.TERA_SHARD, [Type.STEEL]) as PokemonHeldItemModifierType,
+          },
+          {
+            modifier: generateModifierType(scene, modifierTypes.BASE_STAT_BOOSTER, [Stat.ATK]) as PokemonHeldItemModifierType,
+            stackCount: 1 + Math.floor(waveIndex / 20), // +1 Protein every 20 waves
+          },
+          {
+            modifier: generateModifierType(scene, modifierTypes.BASE_STAT_BOOSTER, [Stat.SPD]) as PokemonHeldItemModifierType,
+            stackCount: 1 + Math.floor(waveIndex / 40), // +1 Carbos every 40 waves
+          },
+        ]
+      }
+    ]
+  };
+
+  if (scene.arena.biomeType === Biome.SPACE) {
+    // All 3 members always Cleffa line, but different configs
+    baseConfig.pokemonConfigs!.push({
+      nickname: i18next.t(`${namespace}.cleffa_2_nickname`),
+      species: getPokemonSpecies(cleffaSpecies),
+      isBoss: false,
+      abilityIndex: 1, // Magic Guard
+      shiny: true,
+      variant: 1,
+      nature: Nature.MODEST,
+      moveSet: [Moves.MOONBLAST, Moves.MYSTICAL_FIRE, Moves.ICE_BEAM, Moves.THUNDERBOLT],
+      ivs: [31, 31, 31, 31, 31, 31]
+    },
+    {
+      nickname: i18next.t(`${namespace}.cleffa_3_nickname`, { speciesName: getPokemonSpecies(cleffaSpecies).getName() }),
+      species: getPokemonSpecies(cleffaSpecies),
+      isBoss: false,
+      abilityIndex: 2, // Friend Guard / Unaware
+      shiny: true,
+      variant: 2,
+      nature: Nature.BOLD,
+      moveSet: [Moves.TRI_ATTACK, Moves.STORED_POWER, Moves.TAKE_HEART, Moves.MOONLIGHT],
+      ivs: [31, 31, 31, 31, 31, 31]
+    });
+  } else {
+    // Second member from pool 1
+    const pool1Species = getSpeciesFromPool(POOL_1_POKEMON, waveIndex);
+    // Third member from pool 2
+    const pool2Species = getSpeciesFromPool(POOL_2_POKEMON, waveIndex);
+
+    baseConfig.pokemonConfigs!.push({
+      species: getPokemonSpecies(pool1Species),
+      isBoss: false,
+      ivs: [31, 31, 31, 31, 31, 31]
+    },
+    {
+      species: getPokemonSpecies(pool2Species),
+      isBoss: false,
+      ivs: [31, 31, 31, 31, 31, 31]
+    });
+  }
+
+  return baseConfig;
+}
+
+function getSpeciesFromPool(speciesPool: (Species | BreederSpeciesEvolution)[][], waveIndex: number): Species {
+  const poolCopy = speciesPool.slice(0);
+  randSeedShuffle(poolCopy);
+  const speciesEvolutions = poolCopy.pop()!.slice(0);
+  let speciesObject = speciesEvolutions.pop()!;
+  while (speciesObject instanceof BreederSpeciesEvolution && speciesObject.evolution > waveIndex) {
+    speciesObject = speciesEvolutions.pop()!;
+  }
+  return speciesObject instanceof BreederSpeciesEvolution ? speciesObject.species : speciesObject;
+}
+
+function calculateEggRewardsForPokemon(pokemon: PlayerPokemon): [number, number] {
+  const bst = pokemon.calculateBaseStats().reduce((a, b) => a + b, 0);
+  // 1 point for every 20 points below 680 BST the pokemon is, (max 18, min 1)
+  const pointsFromBst = Math.min(Math.max(Math.floor((680 - bst) / 20), 1), 18);
+
+  const rootSpecies = pokemon.species.getRootSpeciesId(true);
+  let pointsFromStarterTier = 0;
+  // 2 points for every 1 below 7 that the pokemon's starter tier is (max 12, min 0)
+  if (speciesStarters.hasOwnProperty(rootSpecies)) {
+    const starterTier = speciesStarters[rootSpecies];
+    pointsFromStarterTier = Math.min(Math.max(Math.floor(7 - starterTier) * 2, 0), 12);
+  }
+
+  // Maximum of 30 points
+  const totalPoints = Math.min(pointsFromStarterTier + pointsFromBst, 30);
+
+  // 1 Rare egg for every 6 points
+  const numRares = Math.floor(totalPoints / 6);
+  // 1 Common egg for every point leftover
+  const numCommons = totalPoints % 6;
+
+  return [numCommons, numRares];
+}
+
+function getEggOptions(scene: BattleScene, commonEggs: number, rareEggs: number) {
+  const eggDescription = i18next.t(`${namespace}.title`) + ":\n" + i18next.t(trainerNameKey);
+  const eggOptions: IEggOptions[] = [];
+
+  if (commonEggs > 0) {
+    for (let i = 0; i < commonEggs; i++) {
+      eggOptions.push({
+        scene,
+        pulled: false,
+        sourceType: EggSourceType.EVENT,
+        eggDescriptor: eggDescription,
+        tier: EggTier.COMMON
+      });
+    }
+  }
+  if (rareEggs > 0) {
+    for (let i = 0; i < rareEggs; i++) {
+      eggOptions.push({
+        scene,
+        pulled: false,
+        sourceType: EggSourceType.EVENT,
+        eggDescriptor: eggDescription,
+        tier: EggTier.GREAT
+      });
+    }
+  }
+
+  return eggOptions;
+}
+
+function removePokemonFromPartyAndStoreHeldItems(scene: BattleScene, encounter: MysteryEncounter, chosenPokemon: PlayerPokemon) {
+  const party = scene.getParty();
+  const chosenIndex = party.indexOf(chosenPokemon);
+  party[chosenIndex] = party[0];
+  party[0] = chosenPokemon;
+  encounter.misc.originalParty = scene.getParty().slice(1);
+  encounter.misc.originalPartyHeldItems = encounter.misc.originalParty
+    .map(p => p.getHeldItems());
+  scene["party"] = [
+    chosenPokemon
+  ];
+}
+
+function checkAchievement(scene: BattleScene) {
+  if (scene.arena.biomeType === Biome.SPACE) {
+    scene.validateAchv(achvs.BREEDERS_IN_SPACE);
+  }
+}
+
+async function restorePartyAndHeldItems(scene: BattleScene) {
+  const encounter = scene.currentBattle.mysteryEncounter!;
+  // Restore original party
+  scene.getParty().push(...encounter.misc.originalParty);
+
+  // Restore held items
+  const originalHeldItems = encounter.misc.originalPartyHeldItems;
+  originalHeldItems.forEach(pokemonHeldItemsList => {
+    pokemonHeldItemsList.forEach(heldItem => {
+      scene.addModifier(heldItem, true, false, false, true);
+    });
+  });
+  await scene.updateModifiers(true);
+}

src/data/mystery-encounters/mystery-encounters.ts

@@ -31,6 +31,7 @@ import { BugTypeSuperfanEncounter } from "#app/data/mystery-encounters/encounter
 import { FunAndGamesEncounter } from "#app/data/mystery-encounters/encounters/fun-and-games-encounter";
 import { UncommonBreedEncounter } from "#app/data/mystery-encounters/encounters/uncommon-breed-encounter";
 import { GlobalTradeSystemEncounter } from "#app/data/mystery-encounters/encounters/global-trade-system-encounter";
+import { TheExpertPokemonBreederEncounter } from "#app/data/mystery-encounters/encounters/the-expert-pokemon-breeder-encounter";
 
 /**
  * Spawn chance: (BASE_MYSTERY_ENCOUNTER_SPAWN_WEIGHT + WIGHT_INCREMENT_ON_SPAWN_MISS * <number of missed spawns>) / MYSTERY_ENCOUNTER_SPAWN_MAX_WEIGHT
@@ -184,7 +185,8 @@ const humanTransitableBiomeEncounters: MysteryEncounterType[] = [
   MysteryEncounterType.SHADY_VITAMIN_DEALER,
   MysteryEncounterType.THE_POKEMON_SALESMAN,
   MysteryEncounterType.AN_OFFER_YOU_CANT_REFUSE,
-  MysteryEncounterType.THE_WINSTRATE_CHALLENGE
+  MysteryEncounterType.THE_WINSTRATE_CHALLENGE,
+  MysteryEncounterType.THE_EXPERT_POKEMON_BREEDER
 ];
 
 const civilizationBiomeEncounters: MysteryEncounterType[] = [
@@ -238,7 +240,6 @@ export const mysteryEncountersByBiome = new Map<Biome, MysteryEncounterType[]>([
     MysteryEncounterType.SAFARI_ZONE,
     MysteryEncounterType.ABSOLUTE_AVARICE
   ]],
-
   [Biome.SEA, [
     MysteryEncounterType.LOST_AT_SEA
   ]],
@@ -275,7 +276,9 @@ export const mysteryEncountersByBiome = new Map<Biome, MysteryEncounterType[]>([
   [Biome.ABYSS, [
     MysteryEncounterType.DANCING_LESSONS
   ]],
-  [Biome.SPACE, []],
+  [Biome.SPACE, [
+    MysteryEncounterType.THE_EXPERT_POKEMON_BREEDER
+  ]],
   [Biome.CONSTRUCTION_SITE, []],
   [Biome.JUNGLE, [
     MysteryEncounterType.SAFARI_ZONE
@@ -319,6 +322,7 @@ export function initMysteryEncounters() {
   allMysteryEncounters[MysteryEncounterType.FUN_AND_GAMES] = FunAndGamesEncounter;
   allMysteryEncounters[MysteryEncounterType.UNCOMMON_BREED] = UncommonBreedEncounter;
   allMysteryEncounters[MysteryEncounterType.GLOBAL_TRADE_SYSTEM] = GlobalTradeSystemEncounter;
+  allMysteryEncounters[MysteryEncounterType.THE_EXPERT_POKEMON_BREEDER] = TheExpertPokemonBreederEncounter;
 
   // Add extreme encounters to biome map
   extremeBiomeEncounters.forEach(encounter => {

src/data/mystery-encounters/utils/encounter-phase-utils.ts

@@ -36,6 +36,7 @@ import { BattleEndPhase } from "#app/phases/battle-end-phase";
 import { GameOverPhase } from "#app/phases/game-over-phase";
 import { SelectModifierPhase } from "#app/phases/select-modifier-phase";
 import { PartyExpPhase } from "#app/phases/party-exp-phase";
+import { Variant } from "#app/data/variant";
 
 /**
  * Animates exclamation sprite over trainer's head at start of encounter
@@ -67,6 +68,7 @@ export function doTrainerExclamation(scene: BattleScene) {
 export interface EnemyPokemonConfig {
   species: PokemonSpecies;
   isBoss: boolean;
+  nickname?: string;
   bossSegments?: number;
   bossSegmentModifier?: number; // Additive to the determined segment number
   mysteryEncounterPokemonData?: MysteryEncounterPokemonData;
@@ -79,6 +81,8 @@ export interface EnemyPokemonConfig {
   nature?: Nature;
   ivs?: [number, number, number, number, number, number];
   shiny?: boolean;
+  /** Is only checked if Pokemon is shiny */
+  variant?: Variant;
   /** Can set just the status, or pass a timer on the status turns */
   status?: StatusEffect | [StatusEffect, number];
   mysteryEncounterBattleEffects?: (pokemon: Pokemon) => void;
@@ -220,6 +224,11 @@ export async function initBattleWithEnemyConfig(scene: BattleScene, partyConfig:
     if (partyConfig?.pokemonConfigs && e < partyConfig.pokemonConfigs.length) {
       const config = partyConfig.pokemonConfigs[e];
 
+      // Set form
+      if (!isNullOrUndefined(config.nickname)) {
+        enemyPokemon.nickname = btoa(unescape(encodeURIComponent(config.nickname!)));
+      }
+
       // Generate new id, reset status and HP in case using data source
       if (config.dataSource) {
         enemyPokemon.id = Utils.randSeedInt(4294967296);
@@ -235,6 +244,11 @@ export async function initBattleWithEnemyConfig(scene: BattleScene, partyConfig:
         enemyPokemon.shiny = config.shiny!;
       }
 
+      // Set Variant
+      if (enemyPokemon.shiny && !isNullOrUndefined(config.variant)) {
+        enemyPokemon.variant = config.variant!;
+      }
+
       // Set custom mystery encounter data fields (such as sprite scale, custom abilities, types, etc.)
       if (!isNullOrUndefined(config.mysteryEncounterPokemonData)) {
         enemyPokemon.mysteryEncounterPokemonData = config.mysteryEncounterPokemonData!;
@@ -315,6 +329,9 @@ export async function initBattleWithEnemyConfig(scene: BattleScene, partyConfig:
       // Requires re-priming summon data to update everything properly
       enemyPokemon.primeSummonData(enemyPokemon.summonData);
 
+      if (enemyPokemon.isShiny() && !enemyPokemon["shinySparkle"]) {
+        enemyPokemon.initShinySparkle();
+      }
       enemyPokemon.initBattleInfo();
       enemyPokemon.getBattleInfo().initInfo(enemyPokemon);
       enemyPokemon.generateName();

src/data/trainer-config.ts

@@ -1105,8 +1105,16 @@ 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 getRandomPartyMemberFunc(speciesPool: Species[], trainerSlot: TrainerSlot = TrainerSlot.TRAINER, ignoreEvolution: boolean = false, postProcess?: (enemyPokemon: EnemyPokemon) => void): PartyMemberFunc {
-  return (scene: BattleScene, level: integer, strength: PartyMemberStrength) => {
+/**
+ * Randomly selects one of the `Species` from `speciesPool`, determines its evolution, level, and strength.
+ * Then adds Pokemon to scene.
+ * @param speciesPool
+ * @param trainerSlot
+ * @param ignoreEvolution
+ * @param postProcess
+ */
+export function getRandomPartyMemberFunc(speciesPool: Species[], trainerSlot: TrainerSlot = TrainerSlot.TRAINER, ignoreEvolution: boolean = false, postProcess?: (enemyPokemon: EnemyPokemon) => void) {
+  return (scene: BattleScene, level: number, strength: PartyMemberStrength) => {
     let species = Utils.randSeedItem(speciesPool);
     if (!ignoreEvolution) {
       species = getPokemonSpecies(species).getTrainerSpeciesForLevel(level, true, strength, scene.currentBattle.waveIndex);
@@ -2302,6 +2310,8 @@ export const trainerConfigs: TrainerConfigs = {
     .setMoneyMultiplier(2)
     .setPartyTemplates(new TrainerPartyCompoundTemplate(new TrainerPartyTemplate(3, PartyMemberStrength.AVERAGE), new TrainerPartyTemplate(2, PartyMemberStrength.STRONG))),
   [TrainerType.BUG_TYPE_SUPERFAN]: new TrainerConfig(++t).setMoneyMultiplier(2.25).setEncounterBgm(TrainerType.ACE_TRAINER)
-    .setPartyTemplates(new TrainerPartyTemplate(2, PartyMemberStrength.AVERAGE))
+    .setPartyTemplates(new TrainerPartyTemplate(2, PartyMemberStrength.AVERAGE)),
+  [TrainerType.EXPERT_POKEMON_BREEDER]: new TrainerConfig(++t).setMoneyMultiplier(3).setEncounterBgm(TrainerType.ACE_TRAINER)
+    .setPartyTemplates(new TrainerPartyTemplate(3, PartyMemberStrength.STRONG))
 };
 

src/enums/mystery-encounter-type.ts

@@ -28,5 +28,6 @@ export enum MysteryEncounterType {
   BUG_TYPE_SUPERFAN,
   FUN_AND_GAMES,
   UNCOMMON_BREED,
-  GLOBAL_TRADE_SYSTEM
+  GLOBAL_TRADE_SYSTEM,
+  THE_EXPERT_POKEMON_BREEDER
 }

src/enums/trainer-type.ts

@@ -107,6 +107,7 @@ export enum TrainerType {
   VICKY,
   VITO,
   BUG_TYPE_SUPERFAN,
+  EXPERT_POKEMON_BREEDER,
 
   BROCK = 200,
   MISTY,

src/field/arena.ts

@@ -1,19 +1,19 @@
 import BattleScene from "../battle-scene";
-import { BiomePoolTier, PokemonPools, BiomeTierTrainerPools, biomePokemonPools, biomeTrainerPools } from "../data/biomes";
+import { biomePokemonPools, BiomePoolTier, BiomeTierTrainerPools, biomeTrainerPools, PokemonPools } from "../data/biomes";
 import { Constructor } from "#app/utils";
 import * as Utils from "../utils";
 import PokemonSpecies, { getPokemonSpecies } from "../data/pokemon-species";
-import { Weather, WeatherType, getTerrainClearMessage, getTerrainStartMessage, getWeatherClearMessage, getWeatherStartMessage } from "../data/weather";
+import { getTerrainClearMessage, getTerrainStartMessage, getWeatherClearMessage, getWeatherStartMessage, Weather, WeatherType } from "../data/weather";
 import { CommonAnim } from "../data/battle-anims";
 import { Type } from "../data/type";
 import Move from "../data/move";
 import { ArenaTag, ArenaTagSide, ArenaTrapTag, getArenaTag } from "../data/arena-tag";
 import { BattlerIndex } from "../battle";
 import { Terrain, TerrainType } from "../data/terrain";
-import { PostTerrainChangeAbAttr, PostWeatherChangeAbAttr, applyPostTerrainChangeAbAttrs, applyPostWeatherChangeAbAttrs } from "../data/ability";
+import { applyPostTerrainChangeAbAttrs, applyPostWeatherChangeAbAttrs, PostTerrainChangeAbAttr, PostWeatherChangeAbAttr } from "../data/ability";
 import Pokemon from "./pokemon";
 import Overrides from "#app/overrides";
-import { WeatherChangedEvent, TerrainChangedEvent, TagAddedEvent, TagRemovedEvent } from "../events/arena";
+import { TagAddedEvent, TagRemovedEvent, TerrainChangedEvent, WeatherChangedEvent } from "../events/arena";
 import { ArenaTagType } from "#enums/arena-tag-type";
 import { Biome } from "#enums/biome";
 import { Moves } from "#enums/moves";

src/field/pokemon.ts

@@ -3,7 +3,7 @@ import BattleScene, { AnySound } from "../battle-scene";
 import { Variant, VariantSet, variantColorCache } from "#app/data/variant";
 import { variantData } from "#app/data/variant";
 import BattleInfo, { PlayerBattleInfo, EnemyBattleInfo } from "../ui/battle-info";
-import Move, { HighCritAttr, DealsDoubleDamageToTagAttr, applyMoveAttrs, FixedDamageAttr, VariableAtkAttr, allMoves, MoveCategory, TypelessAttr, CritOnlyAttr, getMoveTargets, OneHitKOAttr, VariableMoveTypeAttr, VariableDefAttr, AttackMove, ModifiedDamageAttr, VariableMoveTypeMultiplierAttr, IgnoreOpponentStatStagesAttr, SacrificialAttr, VariableMoveCategoryAttr, CounterDamageAttr, StatStageChangeAttr, RechargeAttr, ChargeAttr, IgnoreWeatherTypeDebuffAttr, BypassBurnDamageReductionAttr, SacrificialAttrOnHit, OneHitKOAccuracyAttr, RespectAttackTypeImmunityAttr, MoveTarget } from "../data/move";
+import Move, { HighCritAttr, HitsTagAttr, applyMoveAttrs, FixedDamageAttr, VariableAtkAttr, allMoves, MoveCategory, TypelessAttr, CritOnlyAttr, getMoveTargets, OneHitKOAttr, VariableMoveTypeAttr, VariableDefAttr, AttackMove, ModifiedDamageAttr, VariableMoveTypeMultiplierAttr, IgnoreOpponentStatStagesAttr, SacrificialAttr, VariableMoveCategoryAttr, CounterDamageAttr, StatStageChangeAttr, RechargeAttr, ChargeAttr, IgnoreWeatherTypeDebuffAttr, BypassBurnDamageReductionAttr, SacrificialAttrOnHit, OneHitKOAccuracyAttr, RespectAttackTypeImmunityAttr, MoveTarget } from "../data/move";
 import { default as PokemonSpecies, PokemonSpeciesForm, SpeciesFormKey, getFusedSpeciesName, getPokemonSpecies, getPokemonSpeciesForm, getStarterValueFriendshipCap, speciesStarters, starterPassiveAbilities } from "../data/pokemon-species";
 import { Constructor, isNullOrUndefined, randSeedInt } from "#app/utils";
 import * as Utils from "../utils";
@@ -1513,7 +1513,7 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
 
     const immuneTags = this.findTags(tag => tag instanceof TypeImmuneTag && tag.immuneType === moveType);
     for (const tag of immuneTags) {
-      if (move && !move.getAttrs(DealsDoubleDamageToTagAttr).some(attr => attr.tagType === tag.tagType)) {
+      if (move && !move.getAttrs(HitsTagAttr).some(attr => attr.tagType === tag.tagType)) {
         typeMultiplier.value = 0;
         break;
       }
@@ -2515,13 +2515,13 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
     this.scene.arena.applyTagsForSide(WeakenMoveScreenTag, defendingSide, move.category, this.scene.currentBattle.double, screenMultiplier);
 
     /**
-     * For each {@linkcode DealsDoubleDamageToTagAttr} the move has, doubles the damage of the move if:
+     * For each {@linkcode HitsTagAttr} the move has, doubles the damage of the move if:
      * The target has a {@linkcode BattlerTagType} that this move interacts with
      * AND
      * The move doubles damage when used against that tag
      */
     const hitsTagMultiplier = new Utils.NumberHolder(1);
-    move.getAttrs(DealsDoubleDamageToTagAttr).filter(hta => hta.doubleDamage).forEach(hta => {
+    move.getAttrs(HitsTagAttr).filter(hta => hta.doubleDamage).forEach(hta => {
       if (this.getTag(hta.tagType)) {
         hitsTagMultiplier.value *= 2;
       }

src/locales/en/achv.json

@@ -283,5 +283,9 @@
   "INVERSE_BATTLE": {
     "name": "Mirror rorriM",
     "description": "Complete the Inverse Battle challenge.\n.egnellahc elttaB esrevnI eht etelpmoC"
+  },
+  "BREEDERS_IN_SPACE": {
+    "name": "Breeders in Space!",
+    "description": "Beat the Expert Pokémon Breeder in the Space Biome."
   }
 }

src/locales/en/config.ts

@@ -84,6 +84,7 @@ import bugTypeSuperfan from "#app/locales/en/mystery-encounters/bug-type-superfa
 import funAndGames from "#app/locales/en/mystery-encounters/fun-and-games-dialogue.json";
 import uncommonBreed from "#app/locales/en/mystery-encounters/uncommon-breed-dialogue.json";
 import globalTradeSystem from "#app/locales/en/mystery-encounters/global-trade-system-dialogue.json";
+import expertPokemonBreeder from "#app/locales/en/mystery-encounters/the-expert-pokemon-breeder-dialogue.json";
 
 /**
  * Dialogue/Text token injection patterns that can be used:
@@ -183,7 +184,8 @@ export const enConfig = {
     bugTypeSuperfan,
     funAndGames,
     uncommonBreed,
-    globalTradeSystem
+    globalTradeSystem,
+    expertPokemonBreeder
   },
   mysteryEncounterMessages
 };

src/locales/en/mystery-encounters/part-timer-dialogue.json

@@ -21,7 +21,7 @@
       "label": "Sales Assistant",
       "tooltip": "(-) Your {{option3PrimaryName}} uses {{option3PrimaryMove}}\n(+) Earn @[MONEY]{Money}",
       "disabled_tooltip": "Your Pokémon need to know certain moves for this job",
-      "selected": "Your {{option3PrimaryName}} spends the day using {{option3PrimaryMove}} to attract customers to the business!"
+      "selected": "Your {{option3PrimaryName}} spends the day using {{option3PrimaryMove}} to draw customers to the business!"
     }
   },
   "job_complete_good": "Thanks for the assistance!\nYour {{selectedPokemon}} was incredibly helpful!$Here's your check for the day.",

src/locales/en/mystery-encounters/the-expert-pokemon-breeder-dialogue.json

@@ -0,0 +1,30 @@
+{
+  "intro": "It's a trainer carrying tons of Pokémon Eggs!",
+  "intro_dialogue": "Hey there, trainer!$It looks like some of your\npartner Pokémon are feeling a little down.$Why not have a battle with me to cheer them up?",
+  "title": "The Expert Pokémon Breeder",
+  "description": "You've been challenged to a battle where @[TOOLTIP_TITLE]{you can only use a single Pokémon}. It might be tough, but it would surely deepen the bond you have with the Pokémon you choose!\nThe breeder will also give you some @[TOOLTIP_TITLE]{Pokémon Eggs} if you win!",
+  "query": "Who will you battle with?",
+  "cleffa_1_nickname": "Ace",
+  "cleffa_2_nickname": "Clefablest",
+  "cleffa_3_nickname": "{{speciesName}} the Great",
+  "option": {
+    "1": {
+      "label": "{{pokemon1Name}}",
+      "tooltip_base": "(-) Tough Battle\n(+) Gain Friendship with {{pokemon1Name}}"
+    },
+    "2": {
+      "label": "{{pokemon2Name}}",
+      "tooltip_base": "(-) Tough Battle\n(+) Gain Friendship with {{pokemon2Name}}"
+    },
+    "3": {
+      "label": "{{pokemon3Name}}",
+      "tooltip_base": "(-) Tough Battle\n(+) Gain Friendship with {{pokemon3Name}}"
+    },
+    "selected": "Let's do this!"
+  },
+  "outro": "Look how happy your {{chosenPokemon}} is now!$Here, you can have these as well.",
+  "gained_eggs": "@s{item_fanfare}You received {{numEggs}}!",
+  "eggs_tooltip": "\n(+) Earn {{eggs}}",
+  "numEggs_one": "{{count}} {{rarity}} Egg",
+  "numEggs_other": "{{count}} {{rarity}} Eggs"
+}

src/locales/en/trainer-names.json

@@ -172,5 +172,6 @@
   "vivi": "Vivi",
   "vicky": "Vicky",
   "vito": "Vito",
-  "bug_type_superfan": "Bug-Type Superfan"
+  "bug_type_superfan": "Bug-Type Superfan",
+  "expert_pokemon_breeder": "Expert Pokémon Breeder"
 }

src/phases/game-over-phase.ts

@@ -243,7 +243,7 @@ export class GameOverPhase extends BattlePhase {
       gameVersion: this.scene.game.config.gameVersion,
       timestamp: new Date().getTime(),
       challenges: this.scene.gameMode.challenges.map(c => new ChallengeData(c)),
-      mysteryEncounterType: this.scene.currentBattle.mysteryEncounter?.encounterType,
+      mysteryEncounterType: this.scene.currentBattle.mysteryEncounter?.encounterType ?? -1,
       mysteryEncounterSaveData: this.scene.mysteryEncounterSaveData
     } as SessionSaveData;
   }

src/phases/move-effect-phase.ts

@@ -4,7 +4,7 @@ import { applyPreAttackAbAttrs, AddSecondStrikeAbAttr, IgnoreMoveEffectsAbAttr,
 import { ArenaTagSide, ConditionalProtectTag } from "#app/data/arena-tag";
 import { MoveAnim } from "#app/data/battle-anims";
 import { BattlerTagLapseType, DamageProtectedTag, ProtectedTag, SemiInvulnerableTag, SubstituteTag } from "#app/data/battler-tags";
-import { MoveTarget, applyMoveAttrs, OverrideMoveEffectAttr, MultiHitAttr, AttackMove, FixedDamageAttr, VariableTargetAttr, MissEffectAttr, MoveFlags, applyFilteredMoveAttrs, MoveAttr, MoveEffectAttr, MoveEffectTrigger, ChargeAttr, MoveCategory, NoEffectAttr, DealsDoubleDamageToTagAttr } from "#app/data/move";
+import { MoveTarget, applyMoveAttrs, OverrideMoveEffectAttr, MultiHitAttr, AttackMove, FixedDamageAttr, VariableTargetAttr, MissEffectAttr, MoveFlags, applyFilteredMoveAttrs, MoveAttr, MoveEffectAttr, MoveEffectTrigger, ChargeAttr, MoveCategory, NoEffectAttr, HitsTagAttr } from "#app/data/move";
 import { SpeciesFormChangePostMoveTrigger } from "#app/data/pokemon-forms";
 import { BattlerTagType } from "#app/enums/battler-tag-type";
 import { Moves } from "#app/enums/moves";
@@ -394,7 +394,7 @@ export class MoveEffectPhase extends PokemonPhase {
     }
 
     const semiInvulnerableTag = target.getTag(SemiInvulnerableTag);
-    if (semiInvulnerableTag && !this.move.getMove().getAttrs(DealsDoubleDamageToTagAttr).some(hta => hta.tagType === semiInvulnerableTag.tagType)) {
+    if (semiInvulnerableTag && !this.move.getMove().getAttrs(HitsTagAttr).some(hta => hta.tagType === semiInvulnerableTag.tagType)) {
       return false;
     }
 

src/system/achv.ts

@@ -279,6 +279,8 @@ export function getAchievementDescription(localizationKey: string): string {
     return i18next.t("achv:FRESH_START.description", { context: genderStr });
   case "INVERSE_BATTLE":
     return i18next.t("achv:INVERSE_BATTLE.description", { context: genderStr });
+  case "BREEDERS_IN_SPACE":
+    return i18next.t("achv:BREEDERS_IN_SPACE.description", { context: genderStr });
   default:
     return "";
   }
@@ -356,6 +358,7 @@ export const achvs = {
   MONO_FAIRY: new ChallengeAchv("MONO_FAIRY", "", "MONO_FAIRY.description", "fairy_feather", 100, (c, scene) => c instanceof SingleTypeChallenge && c.value === 18 && !scene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
   FRESH_START: new ChallengeAchv("FRESH_START", "", "FRESH_START.description", "reviver_seed", 100, (c, scene) => c instanceof FreshStartChallenge && c.value > 0 && !scene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
   INVERSE_BATTLE: new ChallengeAchv("INVERSE_BATTLE", "", "INVERSE_BATTLE.description", "inverse", 100, c => c instanceof InverseBattleChallenge && c.value > 0),
+  BREEDERS_IN_SPACE: new Achv("BREEDERS_IN_SPACE", "", "BREEDERS_IN_SPACE.description", "moon_stone", 100).setSecret(),
 };
 
 export function initAchievements() {

src/test/mystery-encounter/encounters/a-trainers-test-encounter.test.ts

@@ -69,22 +69,6 @@ describe("A Trainer's Test - Mystery Encounter", () => {
     expect(ATrainersTestEncounter.options.length).toBe(2);
   });
 
-  it("should not run below wave 10", async () => {
-    game.override.startingWave(9);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.A_TRAINERS_TEST);
-  });
-
-  it("should not run above wave 179", async () => {
-    game.override.startingWave(181);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle.mysteryEncounter).toBeUndefined();
-  });
-
   it("should initialize fully ", async () => {
     initSceneWithoutEncounterPhase(scene, defaultParty);
     scene.currentBattle.mysteryEncounter = ATrainersTestEncounter;

src/test/mystery-encounter/encounters/absolute-avarice-encounter.test.ts

@@ -66,22 +66,6 @@ describe("Absolute Avarice - Mystery Encounter", () => {
     expect(AbsoluteAvariceEncounter.options.length).toBe(3);
   });
 
-  it("should not run below wave 10", async () => {
-    game.override.startingWave(9);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.ABSOLUTE_AVARICE);
-  });
-
-  it("should not run above wave 179", async () => {
-    game.override.startingWave(181);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle.mysteryEncounter).toBeUndefined();
-  });
-
   it("should not spawn outside of proper biomes", async () => {
     game.override.mysteryEncounterTier(MysteryEncounterTier.GREAT);
     game.override.startingBiome(Biome.VOLCANO);

src/test/mystery-encounter/encounters/an-offer-you-cant-refuse-encounter.test.ts

@@ -80,22 +80,6 @@ describe("An Offer You Can't Refuse - Mystery Encounter", () => {
     expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.AN_OFFER_YOU_CANT_REFUSE);
   });
 
-  it("should not run below wave 10", async () => {
-    game.override.startingWave(9);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.AN_OFFER_YOU_CANT_REFUSE);
-  });
-
-  it("should not run above wave 179", async () => {
-    game.override.startingWave(181);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle.mysteryEncounter).toBeUndefined();
-  });
-
   it("should initialize fully ", async () => {
     initSceneWithoutEncounterPhase(scene, defaultParty);
     scene.currentBattle.mysteryEncounter = AnOfferYouCantRefuseEncounter;

src/test/mystery-encounter/encounters/berries-abound-encounter.test.ts

@@ -69,22 +69,6 @@ describe("Berries Abound - Mystery Encounter", () => {
     expect(BerriesAboundEncounter.options.length).toBe(3);
   });
 
-  it("should not run below wave 10", async () => {
-    game.override.startingWave(9);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.BERRIES_ABOUND);
-  });
-
-  it("should not run above wave 179", async () => {
-    game.override.startingWave(181);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle.mysteryEncounter).toBeUndefined();
-  });
-
   it("should initialize fully", async () => {
     initSceneWithoutEncounterPhase(scene, defaultParty);
     scene.currentBattle.mysteryEncounter = BerriesAboundEncounter;

src/test/mystery-encounter/encounters/bug-type-superfan-encounter.test.ts

@@ -201,22 +201,6 @@ describe("Bug-Type Superfan - Mystery Encounter", () => {
     expect(BugTypeSuperfanEncounter.options.length).toBe(3);
   });
 
-  it("should not run below wave 10", async () => {
-    game.override.startingWave(9);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.BUG_TYPE_SUPERFAN);
-  });
-
-  it("should not run above wave 179", async () => {
-    game.override.startingWave(181);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle.mysteryEncounter).toBeUndefined();
-  });
-
   it("should initialize fully", async () => {
     initSceneWithoutEncounterPhase(scene, defaultParty);
     scene.currentBattle.mysteryEncounter = BugTypeSuperfanEncounter;

src/test/mystery-encounter/encounters/clowning-around-encounter.test.ts

@@ -95,14 +95,6 @@ describe("Clowning Around - Mystery Encounter", () => {
     expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.CLOWNING_AROUND);
   });
 
-  it("should not run above wave 179", async () => {
-    game.override.startingWave(181);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle.mysteryEncounter).toBeUndefined();
-  });
-
   it("should initialize fully", async () => {
     initSceneWithoutEncounterPhase(scene, defaultParty);
     scene.currentBattle.mysteryEncounter = ClowningAroundEncounter;

src/test/mystery-encounter/encounters/dancing-lessons-encounter.test.ts

@@ -69,22 +69,6 @@ describe("Dancing Lessons - Mystery Encounter", () => {
     expect(DancingLessonsEncounter.options.length).toBe(3);
   });
 
-  it("should not run below wave 10", async () => {
-    game.override.startingWave(9);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.DANCING_LESSONS);
-  });
-
-  it("should not run above wave 179", async () => {
-    game.override.startingWave(181);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle.mysteryEncounter).toBeUndefined();
-  });
-
   it("should not spawn outside of proper biomes", async () => {
     game.override.mysteryEncounterTier(MysteryEncounterTier.GREAT);
     game.override.startingBiome(Biome.SPACE);

src/test/mystery-encounter/encounters/delibirdy-encounter.test.ts

@@ -66,22 +66,6 @@ describe("Delibird-y - Mystery Encounter", () => {
     expect(DelibirdyEncounter.options.length).toBe(3);
   });
 
-  it("should not run below wave 10", async () => {
-    game.override.startingWave(9);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.DELIBIRDY);
-  });
-
-  it("should not run above wave 179", async () => {
-    game.override.startingWave(181);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle.mysteryEncounter).toBeUndefined();
-  });
-
   it("should not spawn if player does not have enough money", async () => {
     scene.money = 0;
 

src/test/mystery-encounter/encounters/department-store-sale-encounter.test.ts

@@ -79,22 +79,6 @@ describe("Department Store Sale - Mystery Encounter", () => {
     expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.DEPARTMENT_STORE_SALE);
   });
 
-  it("should not run below wave 10", async () => {
-    game.override.startingWave(9);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.DEPARTMENT_STORE_SALE);
-  });
-
-  it("should not run above wave 179", async () => {
-    game.override.startingWave(181);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle.mysteryEncounter).toBeUndefined();
-  });
-
   describe("Option 1 - TM Shop", () => {
     it("should have the correct properties", () => {
       const option = DepartmentStoreSaleEncounter.options[0];

src/test/mystery-encounter/encounters/field-trip-encounter.test.ts

@@ -72,22 +72,6 @@ describe("Field Trip - Mystery Encounter", () => {
     expect(FieldTripEncounter.options.length).toBe(3);
   });
 
-  it("should not run below wave 10", async () => {
-    game.override.startingWave(9);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.FIELD_TRIP);
-  });
-
-  it("should not run above wave 179", async () => {
-    game.override.startingWave(181);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle.mysteryEncounter).toBeUndefined();
-  });
-
   describe("Option 1 - Show off a physical move", () => {
     it("should have the correct properties", () => {
       const option = FieldTripEncounter.options[0];

src/test/mystery-encounter/encounters/fiery-fallout-encounter.test.ts

@@ -88,14 +88,6 @@ describe("Fiery Fallout - Mystery Encounter", () => {
     expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.FIERY_FALLOUT);
   });
 
-  it("should not run above wave 179", async () => {
-    game.override.startingWave(181);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle.mysteryEncounter).toBeUndefined();
-  });
-
   it("should initialize fully ", async () => {
     initSceneWithoutEncounterPhase(scene, defaultParty);
     scene.currentBattle.mysteryEncounter = FieryFalloutEncounter;

src/test/mystery-encounter/encounters/fight-or-flight-encounter.test.ts

@@ -67,22 +67,6 @@ describe("Fight or Flight - Mystery Encounter", () => {
     expect(FightOrFlightEncounter.options.length).toBe(3);
   });
 
-  it("should not run below wave 10", async () => {
-    game.override.startingWave(9);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.FIGHT_OR_FLIGHT);
-  });
-
-  it("should not run above wave 179", async () => {
-    game.override.startingWave(181);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle.mysteryEncounter).toBeUndefined();
-  });
-
   it("should initialize fully", async () => {
     initSceneWithoutEncounterPhase(scene, defaultParty);
     scene.currentBattle.mysteryEncounter = FightOrFlightEncounter;

src/test/mystery-encounter/encounters/fun-and-games-encounter.test.ts

@@ -85,22 +85,6 @@ describe("Fun And Games! - Mystery Encounter", () => {
     expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.FUN_AND_GAMES);
   });
 
-  it("should not run below wave 10", async () => {
-    game.override.startingWave(9);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.FUN_AND_GAMES);
-  });
-
-  it("should not run above wave 179", async () => {
-    game.override.startingWave(181);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle.mysteryEncounter).toBeUndefined();
-  });
-
   it("should initialize fully", async () => {
     initSceneWithoutEncounterPhase(scene, defaultParty);
     scene.currentBattle.mysteryEncounter = new MysteryEncounter(FunAndGamesEncounter);

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

@@ -69,22 +69,6 @@ describe("Global Trade System - Mystery Encounter", () => {
     expect(GlobalTradeSystemEncounter.options.length).toBe(4);
   });
 
-  it("should not run below wave 10", async () => {
-    game.override.startingWave(9);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.GLOBAL_TRADE_SYSTEM);
-  });
-
-  it("should not run above wave 179", async () => {
-    game.override.startingWave(181);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle.mysteryEncounter).toBeUndefined();
-  });
-
   it("should not spawn outside of CIVILIZATION_ENCOUNTER_BIOMES", async () => {
     game.override.mysteryEncounterTier(MysteryEncounterTier.COMMON);
     game.override.startingBiome(Biome.VOLCANO);

src/test/mystery-encounter/encounters/lost-at-sea-encounter.test.ts

@@ -74,22 +74,6 @@ describe("Lost at Sea - Mystery Encounter", () => {
     expect(game.scene.currentBattle.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.LOST_AT_SEA);
   });
 
-  it("should not run below wave 11", async () => {
-    game.override.startingWave(9);
-
-    await game.runToMysteryEncounter();
-
-    expect(game.scene.currentBattle.mysteryEncounter).toBeUndefined();
-  });
-
-  it("should not run above wave 179", async () => {
-    game.override.startingWave(181);
-
-    await game.runToMysteryEncounter();
-
-    expect(game.scene.currentBattle.mysteryEncounter).toBeUndefined();
-  });
-
   it("should initialize fully", () => {
     initSceneWithoutEncounterPhase(scene, defaultParty);
     scene.currentBattle.mysteryEncounter = LostAtSeaEncounter;

src/test/mystery-encounter/encounters/mysterious-challengers-encounter.test.ts

@@ -79,22 +79,6 @@ describe("Mysterious Challengers - Mystery Encounter", () => {
     expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.MYSTERIOUS_CHALLENGERS);
   });
 
-  it("should not run below wave 10", async () => {
-    game.override.startingWave(9);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.MYSTERIOUS_CHALLENGERS);
-  });
-
-  it("should not run above wave 179", async () => {
-    game.override.startingWave(181);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle.mysteryEncounter).toBeUndefined();
-  });
-
   it("should initialize fully", async () => {
     initSceneWithoutEncounterPhase(scene, defaultParty);
     scene.currentBattle.mysteryEncounter = new MysteryEncounter(MysteriousChallengersEncounter);

src/test/mystery-encounter/encounters/part-timer-encounter.test.ts

@@ -80,22 +80,6 @@ describe("Part-Timer - Mystery Encounter", () => {
     expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.PART_TIMER);
   });
 
-  it("should not run below wave 10", async () => {
-    game.override.startingWave(9);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.PART_TIMER);
-  });
-
-  it("should not run above wave 179", async () => {
-    game.override.startingWave(181);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle.mysteryEncounter).toBeUndefined();
-  });
-
   describe("Option 1 - Make Deliveries", () => {
     it("should have the correct properties", () => {
       const option = PartTimerEncounter.options[0];

src/test/mystery-encounter/encounters/teleporting-hijinks-encounter.test.ts

@@ -67,22 +67,6 @@ describe("Teleporting Hijinks - Mystery Encounter", () => {
     expect(TeleportingHijinksEncounter.options.length).toBe(3);
   });
 
-  it("should not run below wave 10", async () => {
-    game.override.startingWave(9);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.TELEPORTING_HIJINKS);
-  });
-
-  it("should not run above wave 179", async () => {
-    game.override.startingWave(181);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle.mysteryEncounter).toBeUndefined();
-  });
-
   it("should run in waves that are X1", async () => {
     game.override.startingWave(11);
     game.override.mysteryEncounterTier(MysteryEncounterTier.COMMON);

src/test/mystery-encounter/encounters/the-expert-breeder-encounter.test.ts

@@ -0,0 +1,283 @@
+import * as MysteryEncounters from "#app/data/mystery-encounters/mystery-encounters";
+import { HUMAN_TRANSITABLE_BIOMES } from "#app/data/mystery-encounters/mystery-encounters";
+import { Biome } from "#app/enums/biome";
+import { MysteryEncounterType } from "#app/enums/mystery-encounter-type";
+import { Species } from "#app/enums/species";
+import GameManager from "#app/test/utils/gameManager";
+import { afterEach, beforeAll, beforeEach, describe, expect, it, vi } from "vitest";
+import { runMysteryEncounterToEnd, skipBattleRunMysteryEncounterRewardsPhase } from "#test/mystery-encounter/encounter-test-utils";
+import BattleScene from "#app/battle-scene";
+import { MysteryEncounterOptionMode } from "#enums/mystery-encounter-option-mode";
+import { MysteryEncounterTier } from "#enums/mystery-encounter-tier";
+import { initSceneWithoutEncounterPhase } from "#test/utils/gameManagerUtils";
+import { MysteryEncounterMode } from "#enums/mystery-encounter-mode";
+import MysteryEncounter from "#app/data/mystery-encounters/mystery-encounter";
+import { CommandPhase } from "#app/phases/command-phase";
+import { SelectModifierPhase } from "#app/phases/select-modifier-phase";
+import { TheExpertPokemonBreederEncounter } from "#app/data/mystery-encounters/encounters/the-expert-pokemon-breeder-encounter";
+import { TrainerType } from "#enums/trainer-type";
+import { EggTier } from "#enums/egg-type";
+import { PostMysteryEncounterPhase } from "#app/phases/mystery-encounter-phases";
+
+const namespace = "mysteryEncounter:expertPokemonBreeder";
+const defaultParty = [Species.LAPRAS, Species.GENGAR, Species.ABRA];
+const defaultBiome = Biome.CAVE;
+const defaultWave = 45;
+
+describe("The Expert Pokémon Breeder - Mystery Encounter", () => {
+  let phaserGame: Phaser.Game;
+  let game: GameManager;
+  let scene: BattleScene;
+
+  beforeAll(() => {
+    phaserGame = new Phaser.Game({ type: Phaser.HEADLESS });
+  });
+
+  beforeEach(async () => {
+    game = new GameManager(phaserGame);
+    scene = game.scene;
+    game.override.mysteryEncounterChance(100);
+    game.override.startingWave(defaultWave);
+    game.override.startingBiome(defaultBiome);
+    game.override.disableTrainerWaves();
+
+    const biomeMap = new Map<Biome, MysteryEncounterType[]>([
+      [Biome.VOLCANO, [MysteryEncounterType.FIGHT_OR_FLIGHT]],
+    ]);
+    HUMAN_TRANSITABLE_BIOMES.forEach(biome => {
+      biomeMap.set(biome, [MysteryEncounterType.THE_EXPERT_POKEMON_BREEDER]);
+    });
+    vi.spyOn(MysteryEncounters, "mysteryEncountersByBiome", "get").mockReturnValue(biomeMap);
+  });
+
+  afterEach(() => {
+    game.phaseInterceptor.restoreOg();
+    vi.clearAllMocks();
+    vi.resetAllMocks();
+  });
+
+  it("should have the correct properties", async () => {
+    await game.runToMysteryEncounter(MysteryEncounterType.THE_EXPERT_POKEMON_BREEDER, defaultParty);
+
+    expect(TheExpertPokemonBreederEncounter.encounterType).toBe(MysteryEncounterType.THE_EXPERT_POKEMON_BREEDER);
+    expect(TheExpertPokemonBreederEncounter.encounterTier).toBe(MysteryEncounterTier.ULTRA);
+    expect(TheExpertPokemonBreederEncounter.dialogue).toBeDefined();
+    expect(TheExpertPokemonBreederEncounter.dialogue.intro).toStrictEqual([
+      {
+        text: `${namespace}.intro`
+      },
+      {
+        speaker: "trainerNames:expert_pokemon_breeder",
+        text: `${namespace}.intro_dialogue`
+      },
+    ]);
+    expect(TheExpertPokemonBreederEncounter.dialogue.encounterOptionsDialogue?.title).toBe(`${namespace}.title`);
+    expect(TheExpertPokemonBreederEncounter.dialogue.encounterOptionsDialogue?.description).toBe(`${namespace}.description`);
+    expect(TheExpertPokemonBreederEncounter.dialogue.encounterOptionsDialogue?.query).toBe(`${namespace}.query`);
+    expect(TheExpertPokemonBreederEncounter.options.length).toBe(3);
+  });
+
+  it("should not spawn outside of HUMAN_TRANSITABLE_BIOMES", async () => {
+    game.override.mysteryEncounterTier(MysteryEncounterTier.GREAT);
+    game.override.startingBiome(Biome.VOLCANO);
+    await game.runToMysteryEncounter();
+
+    expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.THE_EXPERT_POKEMON_BREEDER);
+  });
+
+  it("should initialize fully", async () => {
+    initSceneWithoutEncounterPhase(scene, defaultParty);
+    scene.currentBattle.mysteryEncounter = new MysteryEncounter(TheExpertPokemonBreederEncounter);
+    const encounter = scene.currentBattle.mysteryEncounter!;
+    scene.currentBattle.waveIndex = defaultWave;
+
+    const { onInit } = encounter;
+
+    expect(encounter.onInit).toBeDefined();
+
+    encounter.populateDialogueTokensFromRequirements(scene);
+    const onInitResult = onInit!(scene);
+
+    expect(encounter.enemyPartyConfigs).toBeDefined();
+    expect(encounter.enemyPartyConfigs.length).toBe(1);
+    expect(encounter.enemyPartyConfigs[0].trainerType).toBe(TrainerType.EXPERT_POKEMON_BREEDER);
+    expect(encounter.enemyPartyConfigs[0].pokemonConfigs?.length).toBe(3);
+    expect(encounter.spriteConfigs).toBeDefined();
+    expect(encounter.spriteConfigs.length).toBe(2);
+    expect(onInitResult).toBe(true);
+  });
+
+  describe("Option 1 - Battle with Pokemon 1", () => {
+    it("should have the correct properties", () => {
+      const option = TheExpertPokemonBreederEncounter.options[0];
+      expect(option.optionMode).toBe(MysteryEncounterOptionMode.DEFAULT);
+      expect(option.dialogue).toBeDefined();
+      expect(option.dialogue).toStrictEqual({
+        buttonLabel: `${namespace}.option.1.label`,
+        buttonTooltip: expect.any(String), // Varies based on pokemon
+        selected: [
+          {
+            speaker: "trainerNames:expert_pokemon_breeder",
+            text: `${namespace}.option.selected`,
+          },
+        ],
+      });
+    });
+
+    it("should start battle against the trainer", async () => {
+      await game.runToMysteryEncounter(MysteryEncounterType.THE_EXPERT_POKEMON_BREEDER, defaultParty);
+      await runMysteryEncounterToEnd(game, 1, undefined, true);
+
+      expect(scene.getCurrentPhase()?.constructor.name).toBe(CommandPhase.name);
+      expect(scene.currentBattle.trainer).toBeDefined();
+      expect(scene.currentBattle.mysteryEncounter?.encounterMode).toBe(MysteryEncounterMode.TRAINER_BATTLE);
+      expect(scene.getParty().length).toBe(1);
+    });
+
+    it("Should reward the player with friendship and eggs based on pokemon selected", async () => {
+      await game.runToMysteryEncounter(MysteryEncounterType.THE_EXPERT_POKEMON_BREEDER, defaultParty);
+
+      const friendshipBefore = scene.currentBattle.mysteryEncounter!.misc.pokemon1.friendship;
+
+      scene.gameData.eggs = [];
+      const eggsBefore = scene.gameData.eggs;
+      expect(eggsBefore).toBeDefined();
+      const eggsBeforeLength = eggsBefore.length;
+
+      await runMysteryEncounterToEnd(game, 1, undefined, true);
+      await skipBattleRunMysteryEncounterRewardsPhase(game);
+      await game.phaseInterceptor.to(SelectModifierPhase, false);
+      expect(scene.getCurrentPhase()?.constructor.name).toBe(SelectModifierPhase.name);
+
+      const eggsAfter = scene.gameData.eggs;
+      const commonEggs = scene.currentBattle.mysteryEncounter!.misc.pokemon1CommonEggs;
+      const rareEggs = scene.currentBattle.mysteryEncounter!.misc.pokemon1RareEggs;
+      expect(eggsAfter).toBeDefined();
+      expect(eggsBeforeLength + commonEggs + rareEggs).toBe(eggsAfter.length);
+      expect(eggsAfter.filter(egg => egg.tier === EggTier.COMMON).length).toBe(commonEggs);
+      expect(eggsAfter.filter(egg => egg.tier === EggTier.GREAT).length).toBe(rareEggs);
+
+      game.phaseInterceptor.superEndPhase();
+      await game.phaseInterceptor.to(PostMysteryEncounterPhase);
+
+      const friendshipAfter = scene.currentBattle.mysteryEncounter!.misc.pokemon1.friendship;
+      expect(friendshipAfter).toBe(friendshipBefore + 20 + 2); // +2 extra for friendship gained from winning battle
+    });
+  });
+
+  describe("Option 2 - Battle with Pokemon 2", () => {
+    it("should have the correct properties", () => {
+      const option = TheExpertPokemonBreederEncounter.options[1];
+      expect(option.optionMode).toBe(MysteryEncounterOptionMode.DEFAULT);
+      expect(option.dialogue).toBeDefined();
+      expect(option.dialogue).toStrictEqual({
+        buttonLabel: `${namespace}.option.2.label`,
+        buttonTooltip: expect.any(String), // Varies based on pokemon
+        selected: [
+          {
+            speaker: "trainerNames:expert_pokemon_breeder",
+            text: `${namespace}.option.selected`,
+          },
+        ],
+      });
+    });
+
+    it("should start battle against the trainer", async () => {
+      await game.runToMysteryEncounter(MysteryEncounterType.THE_EXPERT_POKEMON_BREEDER, defaultParty);
+      await runMysteryEncounterToEnd(game, 2, undefined, true);
+
+      expect(scene.getCurrentPhase()?.constructor.name).toBe(CommandPhase.name);
+      expect(scene.currentBattle.trainer).toBeDefined();
+      expect(scene.currentBattle.mysteryEncounter?.encounterMode).toBe(MysteryEncounterMode.TRAINER_BATTLE);
+      expect(scene.getParty().length).toBe(1);
+    });
+
+    it("Should reward the player with friendship and eggs based on pokemon selected", async () => {
+      await game.runToMysteryEncounter(MysteryEncounterType.THE_EXPERT_POKEMON_BREEDER, defaultParty);
+
+      const friendshipBefore = scene.currentBattle.mysteryEncounter!.misc.pokemon2.friendship;
+
+      scene.gameData.eggs = [];
+      const eggsBefore = scene.gameData.eggs;
+      expect(eggsBefore).toBeDefined();
+      const eggsBeforeLength = eggsBefore.length;
+
+      await runMysteryEncounterToEnd(game, 2, undefined, true);
+      await skipBattleRunMysteryEncounterRewardsPhase(game);
+      await game.phaseInterceptor.to(SelectModifierPhase, false);
+      expect(scene.getCurrentPhase()?.constructor.name).toBe(SelectModifierPhase.name);
+
+      const eggsAfter = scene.gameData.eggs;
+      const commonEggs = scene.currentBattle.mysteryEncounter!.misc.pokemon2CommonEggs;
+      const rareEggs = scene.currentBattle.mysteryEncounter!.misc.pokemon2RareEggs;
+      expect(eggsAfter).toBeDefined();
+      expect(eggsBeforeLength + commonEggs + rareEggs).toBe(eggsAfter.length);
+      expect(eggsAfter.filter(egg => egg.tier === EggTier.COMMON).length).toBe(commonEggs);
+      expect(eggsAfter.filter(egg => egg.tier === EggTier.GREAT).length).toBe(rareEggs);
+
+      game.phaseInterceptor.superEndPhase();
+      await game.phaseInterceptor.to(PostMysteryEncounterPhase);
+
+      const friendshipAfter = scene.currentBattle.mysteryEncounter!.misc.pokemon2.friendship;
+      expect(friendshipAfter).toBe(friendshipBefore + 20 + 2); // +2 extra for friendship gained from winning battle
+    });
+  });
+
+  describe("Option 3 - Battle with Pokemon 3", () => {
+    it("should have the correct properties", () => {
+      const option = TheExpertPokemonBreederEncounter.options[2];
+      expect(option.optionMode).toBe(MysteryEncounterOptionMode.DEFAULT);
+      expect(option.dialogue).toBeDefined();
+      expect(option.dialogue).toStrictEqual({
+        buttonLabel: `${namespace}.option.3.label`,
+        buttonTooltip: expect.any(String), // Varies based on pokemon
+        selected: [
+          {
+            speaker: "trainerNames:expert_pokemon_breeder",
+            text: `${namespace}.option.selected`,
+          },
+        ],
+      });
+    });
+
+    it("should start battle against the trainer", async () => {
+      await game.runToMysteryEncounter(MysteryEncounterType.THE_EXPERT_POKEMON_BREEDER, defaultParty);
+      await runMysteryEncounterToEnd(game, 3, undefined, true);
+
+      expect(scene.getCurrentPhase()?.constructor.name).toBe(CommandPhase.name);
+      expect(scene.currentBattle.trainer).toBeDefined();
+      expect(scene.currentBattle.mysteryEncounter?.encounterMode).toBe(MysteryEncounterMode.TRAINER_BATTLE);
+      expect(scene.getParty().length).toBe(1);
+    });
+
+    it("Should reward the player with friendship and eggs based on pokemon selected", async () => {
+      await game.runToMysteryEncounter(MysteryEncounterType.THE_EXPERT_POKEMON_BREEDER, defaultParty);
+
+      const friendshipBefore = scene.currentBattle.mysteryEncounter!.misc.pokemon3.friendship;
+
+      scene.gameData.eggs = [];
+      const eggsBefore = scene.gameData.eggs;
+      expect(eggsBefore).toBeDefined();
+      const eggsBeforeLength = eggsBefore.length;
+
+      await runMysteryEncounterToEnd(game, 3, undefined, true);
+      await skipBattleRunMysteryEncounterRewardsPhase(game);
+      await game.phaseInterceptor.to(SelectModifierPhase, false);
+      expect(scene.getCurrentPhase()?.constructor.name).toBe(SelectModifierPhase.name);
+
+      const eggsAfter = scene.gameData.eggs;
+      const commonEggs = scene.currentBattle.mysteryEncounter!.misc.pokemon3CommonEggs;
+      const rareEggs = scene.currentBattle.mysteryEncounter!.misc.pokemon3RareEggs;
+      expect(eggsAfter).toBeDefined();
+      expect(eggsBeforeLength + commonEggs + rareEggs).toBe(eggsAfter.length);
+      expect(eggsAfter.filter(egg => egg.tier === EggTier.COMMON).length).toBe(commonEggs);
+      expect(eggsAfter.filter(egg => egg.tier === EggTier.GREAT).length).toBe(rareEggs);
+
+      game.phaseInterceptor.superEndPhase();
+      await game.phaseInterceptor.to(PostMysteryEncounterPhase);
+
+      const friendshipAfter = scene.currentBattle.mysteryEncounter!.misc.pokemon3.friendship;
+      expect(friendshipAfter).toBe(friendshipBefore + 20 + 2); // +2 extra for friendship gained from winning battle
+    });
+  });
+});

src/test/mystery-encounter/encounters/the-pokemon-salesman-encounter.test.ts

@@ -76,22 +76,6 @@ describe("The Pokemon Salesman - Mystery Encounter", () => {
     expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.THE_POKEMON_SALESMAN);
   });
 
-  it("should not run below wave 10", async () => {
-    game.override.startingWave(9);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.THE_POKEMON_SALESMAN);
-  });
-
-  it("should not run above wave 179", async () => {
-    game.override.startingWave(181);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle.mysteryEncounter).toBeUndefined();
-  });
-
   it("should initialize fully ", async () => {
     initSceneWithoutEncounterPhase(scene, defaultParty);
     scene.currentBattle.mysteryEncounter = ThePokemonSalesmanEncounter;

src/test/mystery-encounter/encounters/the-strong-stuff-encounter.test.ts

@@ -83,22 +83,6 @@ describe("The Strong Stuff - Mystery Encounter", () => {
     expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.THE_STRONG_STUFF);
   });
 
-  it("should not run below wave 10", async () => {
-    game.override.startingWave(9);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.THE_STRONG_STUFF);
-  });
-
-  it("should not run above wave 179", async () => {
-    game.override.startingWave(181);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle.mysteryEncounter).toBeUndefined();
-  });
-
   it("should initialize fully ", async () => {
     initSceneWithoutEncounterPhase(scene, defaultParty);
     scene.currentBattle.mysteryEncounter = TheStrongStuffEncounter;

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

@@ -90,22 +90,6 @@ describe("The Winstrate Challenge - Mystery Encounter", () => {
     expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.THE_WINSTRATE_CHALLENGE);
   });
 
-  it("should not run below wave 10", async () => {
-    game.override.startingWave(9);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.THE_WINSTRATE_CHALLENGE);
-  });
-
-  it("should not run above wave 179", async () => {
-    game.override.startingWave(181);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle.mysteryEncounter).toBeUndefined();
-  });
-
   it("should initialize fully", async () => {
     initSceneWithoutEncounterPhase(scene, defaultParty);
     scene.currentBattle.mysteryEncounter = new MysteryEncounter(TheWinstrateChallengeEncounter);

src/test/mystery-encounter/encounters/trash-to-treasure-encounter.test.ts

@@ -71,22 +71,6 @@ describe("Trash to Treasure - Mystery Encounter", () => {
     expect(TrashToTreasureEncounter.options.length).toBe(2);
   });
 
-  it("should not run below wave 10", async () => {
-    game.override.startingWave(9);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.TRASH_TO_TREASURE);
-  });
-
-  it("should not run above wave 179", async () => {
-    game.override.startingWave(181);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle.mysteryEncounter).toBeUndefined();
-  });
-
   it("should initialize fully", async () => {
     initSceneWithoutEncounterPhase(scene, defaultParty);
     scene.currentBattle.mysteryEncounter = TrashToTreasureEncounter;

src/test/mystery-encounter/encounters/uncommon-breed-encounter.test.ts

@@ -74,22 +74,6 @@ describe("Uncommon Breed - Mystery Encounter", () => {
     expect(UncommonBreedEncounter.options.length).toBe(3);
   });
 
-  it("should not run below wave 10", async () => {
-    game.override.startingWave(9);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.UNCOMMON_BREED);
-  });
-
-  it("should not run above wave 179", async () => {
-    game.override.startingWave(181);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle.mysteryEncounter).toBeUndefined();
-  });
-
   it("should initialize fully", async () => {
     initSceneWithoutEncounterPhase(scene, defaultParty);
     scene.currentBattle.mysteryEncounter = UncommonBreedEncounter;

src/test/mystery-encounter/encounters/weird-dream-encounter.test.ts

@@ -73,22 +73,6 @@ describe("Weird Dream - Mystery Encounter", () => {
     expect(WeirdDreamEncounter.options.length).toBe(2);
   });
 
-  it("should not run below wave 10", async () => {
-    game.override.startingWave(9);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.WEIRD_DREAM);
-  });
-
-  it("should not run above wave 179", async () => {
-    game.override.startingWave(181);
-
-    await game.runToMysteryEncounter();
-
-    expect(scene.currentBattle.mysteryEncounter).toBeUndefined();
-  });
-
   it("should initialize fully", async () => {
     initSceneWithoutEncounterPhase(scene, defaultParty);
     scene.currentBattle.mysteryEncounter = WeirdDreamEncounter;

src/test/mystery-encounter/mystery-encounter.test.ts

@@ -4,10 +4,12 @@ import Phaser from "phaser";
 import { Species } from "#enums/species";
 import { MysteryEncounterPhase } from "#app/phases/mystery-encounter-phases";
 import { MysteryEncounterType } from "#enums/mystery-encounter-type";
+import BattleScene from "#app/battle-scene";
 
 describe("Mystery Encounters", () => {
   let phaserGame: Phaser.Game;
   let game: GameManager;
+  let scene: BattleScene;
 
   beforeAll(() => {
     phaserGame = new Phaser.Game({
@@ -21,6 +23,7 @@ describe("Mystery Encounters", () => {
 
   beforeEach(() => {
     game = new GameManager(phaserGame);
+    scene = game.scene;
     game.override.startingWave(11);
     game.override.mysteryEncounterChance(100);
   });
@@ -32,23 +35,20 @@ describe("Mystery Encounters", () => {
     expect(game.scene.getCurrentPhase()!.constructor.name).toBe(MysteryEncounterPhase.name);
   });
 
-  it("", async () => {
-    await game.runToMysteryEncounter(MysteryEncounterType.MYSTERIOUS_CHALLENGERS, [Species.CHARIZARD, Species.VOLCARONA]);
+  it("Encounters should not run below wave 10", async () => {
+    game.override.startingWave(9);
 
-    await game.phaseInterceptor.to(MysteryEncounterPhase, false);
-    expect(game.scene.getCurrentPhase()!.constructor.name).toBe(MysteryEncounterPhase.name);
+    await game.runToMysteryEncounter();
+
+    expect(scene.currentBattle?.mysteryEncounter?.encounterType).not.toBe(MysteryEncounterType.MYSTERIOUS_CHALLENGERS);
   });
 
-  it("spawns mysterious challengers encounter", async () => {
-  });
+  it("Encounters should not run above wave 180", async () => {
+    game.override.startingWave(181);
 
-  it("spawns mysterious chest encounter", async () => {
-  });
+    await game.runToMysteryEncounter();
 
-  it("spawns dark deal encounter", async () => {
-  });
-
-  it("spawns fight or flight encounter", async () => {
+    expect(scene.currentBattle.mysteryEncounter).toBeUndefined();
   });
 });
 

src/ui/run-history-ui-handler.ts

@@ -281,7 +281,7 @@ class RunEntryContainer extends Phaser.GameObjects.Container {
       const genderIndex = this.scene.gameData.gender ?? PlayerGender.UNSET;
       const genderStr = PlayerGender[genderIndex].toLowerCase();
       // Defeats from wild Pokemon battles will show the Pokemon responsible by the text of the run result.
-      if (data.battleType === BattleType.WILD) {
+      if (data.battleType === BattleType.WILD || (data.battleType === BattleType.MYSTERY_ENCOUNTER && !data.trainer)) {
         const enemyContainer = this.scene.add.container(8, 5);
         const gameOutcomeLabel = addTextObject(this.scene, 0, 0, `${i18next.t("runHistory:defeatedWild", { context: genderStr })}`, TextStyle.WINDOW);
         enemyContainer.add(gameOutcomeLabel);
@@ -302,7 +302,7 @@ class RunEntryContainer extends Phaser.GameObjects.Container {
           enemy.destroy();
         });
         this.add(enemyContainer);
-      } else if (data.battleType === BattleType.TRAINER) { // Defeats from Trainers show the trainer's title and name
+      } else if (data.battleType === BattleType.TRAINER || (data.battleType === BattleType.MYSTERY_ENCOUNTER && data.trainer)) { // Defeats from Trainers show the trainer's title and name
         const tObj = data.trainer.toTrainer(this.scene);
         // Because of the interesting mechanics behind rival names, the rival name and title have to be retrieved differently
         const RIVAL_TRAINER_ID_THRESHOLD = 375;

src/ui/run-info-ui-handler.ts

@@ -211,7 +211,7 @@ export default class RunInfoUiHandler extends UiHandler {
     if (!this.isVictory) {
       const enemyContainer = this.scene.add.container(0, 0);
       // Wild - Single and Doubles
-      if (this.runInfo.battleType === BattleType.WILD) {
+      if (this.runInfo.battleType === BattleType.WILD || (this.runInfo.battleType === BattleType.MYSTERY_ENCOUNTER && !this.runInfo.trainer)) {
         switch (this.runInfo.enemyParty.length) {
         case 1:
           // Wild - Singles
@@ -222,7 +222,7 @@ export default class RunInfoUiHandler extends UiHandler {
           this.parseWildDoubleDefeat(enemyContainer);
           break;
         }
-      } else if (this.runInfo.battleType === BattleType.TRAINER) {
+      } else if (this.runInfo.battleType === BattleType.TRAINER || (this.runInfo.battleType === BattleType.MYSTERY_ENCOUNTER && this.runInfo.trainer)) {
         this.parseTrainerDefeat(enemyContainer);
       }
       this.runResultContainer.add(enemyContainer);
@@ -381,10 +381,6 @@ export default class RunInfoUiHandler extends UiHandler {
       break;
     case GameModes.SPLICED_ENDLESS:
       modeText.appendText(`${i18next.t("gameMode:endlessSpliced")}`, false);
-      if (this.runInfo.waveIndex === this.scene.gameData.gameStats.highestEndlessWave) {
-        modeText.appendText(` [${i18next.t("runHistory:personalBest")}]`, false);
-        modeText.setTint(0xffef5c, 0x47ff69, 0x6b6bff, 0xff6969);
-      }
       break;
     case GameModes.CHALLENGE:
       modeText.appendText(`${i18next.t("gameMode:challenge")}`, false);
@@ -403,17 +399,18 @@ export default class RunInfoUiHandler extends UiHandler {
       break;
     case GameModes.ENDLESS:
       modeText.appendText(`${i18next.t("gameMode:endless")}`, false);
-      // If the player achieves a personal best in Endless, the mode text will be tinted similarly to SSS luck to celebrate their achievement.
-      if (this.runInfo.waveIndex === this.scene.gameData.gameStats.highestEndlessWave) {
-        modeText.appendText(` [${i18next.t("runHistory:personalBest")}]`, false);
-        modeText.setTint(0xffef5c, 0x47ff69, 0x6b6bff, 0xff6969);
-      }
       break;
     case GameModes.CLASSIC:
       modeText.appendText(`${i18next.t("gameMode:classic")}`, false);
       break;
     }
 
+    // If the player achieves a personal best in Endless, the mode text will be tinted similarly to SSS luck to celebrate their achievement.
+    if ((this.runInfo.gameMode === GameModes.ENDLESS || this.runInfo.gameMode === GameModes.SPLICED_ENDLESS) && this.runInfo.waveIndex === this.scene.gameData.gameStats.highestEndlessWave) {
+      modeText.appendText(` [${i18next.t("runHistory:personalBest")}]`);
+      modeText.setTint(0xffef5c, 0x47ff69, 0x6b6bff, 0xff6969);
+    }
+
     // Duration + Money
     const runInfoTextContainer = this.scene.add.container(0, 0);
     // Japanese is set to a greater line spacing of 35px in addBBCodeTextObject() if lineSpacing < 12.