diff --git a/public/audio/cry/718-10-complete.m4a b/public/audio/cry/718-10-complete.m4a
new file mode 100644
index 00000000000..94d95360553
Binary files /dev/null and b/public/audio/cry/718-10-complete.m4a differ
diff --git a/src/battle-scene.ts b/src/battle-scene.ts
index 8dbc501375d..91bc9489b39 100644
--- a/src/battle-scene.ts
+++ b/src/battle-scene.ts
@@ -4,7 +4,7 @@ import Pokemon, { EnemyPokemon, PlayerPokemon } from "#app/field/pokemon";
 import PokemonSpecies, { allSpecies, getPokemonSpecies, PokemonSpeciesFilter } from "#app/data/pokemon-species";
 import { Constructor, isNullOrUndefined, randSeedInt } from "#app/utils";
 import * as Utils from "#app/utils";
-import { ConsumableModifier, ConsumablePokemonModifier, DoubleBattleChanceBoosterModifier, ExpBalanceModifier, ExpShareModifier, FusePokemonModifier, HealingBoosterModifier, Modifier, ModifierBar, ModifierPredicate, MultipleParticipantExpBonusModifier, overrideHeldItems, overrideModifiers, PersistentModifier, PokemonExpBoosterModifier, PokemonFormChangeItemModifier, PokemonHeldItemModifier, PokemonHpRestoreModifier, PokemonIncrementingStatModifier, TerastallizeModifier, TurnHeldItemTransferModifier } from "./modifier/modifier";
+import { ConsumableModifier, ConsumablePokemonModifier, DoubleBattleChanceBoosterModifier, ExpBalanceModifier, ExpShareModifier, FusePokemonModifier, HealingBoosterModifier, Modifier, ModifierBar, ModifierPredicate, MultipleParticipantExpBonusModifier, overrideHeldItems, overrideModifiers, PersistentModifier, PokemonExpBoosterModifier, PokemonFormChangeItemModifier, PokemonHeldItemModifier, PokemonHpRestoreModifier, PokemonIncrementingStatModifier, RememberMoveModifier, TerastallizeModifier, TurnHeldItemTransferModifier } from "./modifier/modifier";
 import { PokeballType } from "#app/data/pokeball";
 import { initCommonAnims, initMoveAnim, loadCommonAnimAssets, loadMoveAnimAssets, populateAnims } from "#app/data/battle-anims";
 import { Phase } from "#app/phase";
@@ -1389,7 +1389,7 @@ export default class BattleScene extends SceneBase {
     case Species.GRENINJA:
       return Utils.randSeedInt(2);
     case Species.ZYGARDE:
-      return Utils.randSeedInt(3);
+      return Utils.randSeedInt(4);
     case Species.MINIOR:
       return Utils.randSeedInt(6);
     case Species.ALCREMIE:
@@ -2425,7 +2425,7 @@ export default class BattleScene extends SceneBase {
     return Math.floor(moneyValue / 10) * 10;
   }
 
-  addModifier(modifier: Modifier | null, ignoreUpdate?: boolean, playSound?: boolean, virtual?: boolean, instant?: boolean): Promise<boolean> {
+  addModifier(modifier: Modifier | null, ignoreUpdate?: boolean, playSound?: boolean, virtual?: boolean, instant?: boolean, cost?: number): Promise<boolean> {
     if (!modifier) {
       return Promise.resolve(false);
     }
@@ -2482,6 +2482,8 @@ export default class BattleScene extends SceneBase {
               }
             } else if (modifier instanceof FusePokemonModifier) {
               args.push(this.getPokemonById(modifier.fusePokemonId) as PlayerPokemon);
+            } else if (modifier instanceof RememberMoveModifier && !Utils.isNullOrUndefined(cost)) {
+              args.push(cost);
             }
 
             if (modifier.shouldApply(pokemon, ...args)) {
diff --git a/src/data/ability.ts b/src/data/ability.ts
index 8e7f9e8cdc4..f640e40e507 100644
--- a/src/data/ability.ts
+++ b/src/data/ability.ts
@@ -5654,16 +5654,18 @@ export function initAbilities() {
       .attr(UnsuppressableAbilityAbAttr)
       .attr(NoFusionAbilityAbAttr)
       .bypassFaint(),
-    new Ability(Abilities.POWER_CONSTRUCT, 7) // TODO: 10% Power Construct Zygarde isn't accounted for yet. If changed, update Zygarde's getSpeciesFormIndex entry accordingly
-      .attr(PostBattleInitFormChangeAbAttr, () => 2)
-      .attr(PostSummonFormChangeAbAttr, p => p.getHpRatio() <= 0.5 || p.getFormKey() === "complete" ? 4 : 2)
-      .attr(PostTurnFormChangeAbAttr, p => p.getHpRatio() <= 0.5 || p.getFormKey() === "complete" ? 4 : 2)
+    new Ability(Abilities.POWER_CONSTRUCT, 7)
+      .conditionalAttr(pokemon => pokemon.formIndex === 2 || pokemon.formIndex === 4, PostBattleInitFormChangeAbAttr, () => 2)
+      .conditionalAttr(pokemon => pokemon.formIndex === 3 || pokemon.formIndex === 5, PostBattleInitFormChangeAbAttr, () => 3)
+      .conditionalAttr(pokemon => pokemon.formIndex === 2 || pokemon.formIndex === 4, PostSummonFormChangeAbAttr, p => p.getHpRatio() <= 0.5 || p.getFormKey() === "complete" ? 4 : 2)
+      .conditionalAttr(pokemon => pokemon.formIndex === 2 || pokemon.formIndex === 4, PostTurnFormChangeAbAttr, p => p.getHpRatio() <= 0.5 || p.getFormKey() === "complete" ? 4 : 2)
+      .conditionalAttr(pokemon => pokemon.formIndex === 3 || pokemon.formIndex === 5, PostSummonFormChangeAbAttr, p => p.getHpRatio() <= 0.5 || p.getFormKey() === "10-complete" ? 5 : 3)
+      .conditionalAttr(pokemon => pokemon.formIndex === 3 || pokemon.formIndex === 5, PostTurnFormChangeAbAttr, p => p.getHpRatio() <= 0.5 || p.getFormKey() === "10-complete" ? 5 : 3)
       .attr(UncopiableAbilityAbAttr)
       .attr(UnswappableAbilityAbAttr)
       .attr(UnsuppressableAbilityAbAttr)
       .attr(NoFusionAbilityAbAttr)
-      .bypassFaint()
-      .partial(),
+      .bypassFaint(),
     new Ability(Abilities.CORROSION, 7)
       .attr(IgnoreTypeStatusEffectImmunityAbAttr, [ StatusEffect.POISON, StatusEffect.TOXIC ], [ Type.STEEL, Type.POISON ])
       .edgeCase(), // Should interact correctly with magic coat/bounce (not yet implemented), fling with toxic orb (not implemented yet), and synchronize (not fully implemented yet)
diff --git a/src/data/arena-tag.ts b/src/data/arena-tag.ts
index 71cf11fa06f..2bd6ae09877 100644
--- a/src/data/arena-tag.ts
+++ b/src/data/arena-tag.ts
@@ -1,7 +1,7 @@
 import { Arena } from "#app/field/arena";
 import BattleScene from "#app/battle-scene";
 import { Type } from "#app/data/type";
-import * as Utils from "#app/utils";
+import { BooleanHolder, NumberHolder, toDmgValue } from "#app/utils";
 import { MoveCategory, allMoves, MoveTarget, IncrementMovePriorityAttr, applyMoveAttrs } from "#app/data/move";
 import { getPokemonNameWithAffix } from "#app/messages";
 import Pokemon, { HitResult, PokemonMove } from "#app/field/pokemon";
@@ -36,7 +36,7 @@ export abstract class ArenaTag {
     public side: ArenaTagSide = ArenaTagSide.BOTH
   ) {}
 
-  apply(arena: Arena, args: any[]): boolean {
+  apply(arena: Arena, simulated: boolean, ...args: unknown[]): boolean {
     return true;
   }
 
@@ -122,10 +122,20 @@ export class MistTag extends ArenaTag {
     }
   }
 
-  apply(arena: Arena, args: any[]): boolean {
-    (args[0] as Utils.BooleanHolder).value = true;
+  /**
+   * Cancels the lowering of stats
+   * @param arena the {@linkcode Arena} containing this effect
+   * @param simulated `true` if the effect should be applied quietly
+   * @param cancelled a {@linkcode BooleanHolder} whose value is set to `true`
+   * to flag the stat reduction as cancelled
+   * @returns `true` if a stat reduction was cancelled; `false` otherwise
+   */
+  override apply(arena: Arena, simulated: boolean, cancelled: BooleanHolder): boolean {
+    cancelled.value = true;
 
-    arena.scene.queueMessage(i18next.t("arenaTag:mistApply"));
+    if (!simulated) {
+      arena.scene.queueMessage(i18next.t("arenaTag:mistApply"));
+    }
 
     return true;
   }
@@ -157,17 +167,15 @@ export class WeakenMoveScreenTag extends ArenaTag {
   /**
    * Applies the weakening effect to the move.
    *
-   * @param arena - The arena where the move is applied.
-   * @param args - The arguments for the move application.
-   * @param args[0] - The category of the move.
-   * @param args[1] - A boolean indicating whether it is a double battle.
-   * @param args[2] - An object of type `Utils.NumberHolder` that holds the damage multiplier
-   *
-   * @returns True if the move was weakened, otherwise false.
+   * @param arena the {@linkcode Arena} where the move is applied.
+   * @param simulated n/a
+   * @param moveCategory the attacking move's {@linkcode MoveCategory}.
+   * @param damageMultiplier A {@linkcode NumberHolder} containing the damage multiplier
+   * @returns `true` if the attacking move was weakened; `false` otherwise.
    */
-  apply(arena: Arena, args: any[]): boolean {
-    if (this.weakenedCategories.includes((args[0] as MoveCategory))) {
-      (args[2] as Utils.NumberHolder).value = (args[1] as boolean) ? 2732 / 4096 : 0.5;
+  override apply(arena: Arena, simulated: boolean, moveCategory: MoveCategory, damageMultiplier: NumberHolder): boolean {
+    if (this.weakenedCategories.includes(moveCategory)) {
+      damageMultiplier.value = arena.scene.currentBattle.double ? 2732 / 4096 : 0.5;
       return true;
     }
     return false;
@@ -249,38 +257,34 @@ export class ConditionalProtectTag extends ArenaTag {
   onRemove(arena: Arena): void { }
 
   /**
-   * apply(): Checks incoming moves against the condition function
+   * Checks incoming moves against the condition function
    * and protects the target if conditions are met
-   * @param arena The arena containing this tag
-   * @param args\[0\] (Utils.BooleanHolder) Signals if the move is cancelled
-   * @param args\[1\] (Pokemon) The Pokemon using the move
-   * @param args\[2\] (Pokemon) The intended target of the move
-   * @param args\[3\] (Moves) The parameters to the condition function
-   * @param args\[4\] (Utils.BooleanHolder) Signals if the applied protection supercedes protection-ignoring effects
-   * @returns
+   * @param arena the {@linkcode Arena} containing this tag
+   * @param simulated `true` if the tag is applied quietly; `false` otherwise.
+   * @param isProtected a {@linkcode BooleanHolder} used to flag if the move is protected against
+   * @param attacker the attacking {@linkcode Pokemon}
+   * @param defender the defending {@linkcode Pokemon}
+   * @param moveId the {@linkcode Moves | identifier} for the move being used
+   * @param ignoresProtectBypass a {@linkcode BooleanHolder} used to flag if a protection effect supercedes effects that ignore protection
+   * @returns `true` if this tag protected against the attack; `false` otherwise
    */
-  apply(arena: Arena, args: any[]): boolean {
-    const [ cancelled, user, target, moveId, ignoresBypass ] = args;
+  override apply(arena: Arena, simulated: boolean, isProtected: BooleanHolder, attacker: Pokemon, defender: Pokemon,
+    moveId: Moves, ignoresProtectBypass: BooleanHolder): boolean {
 
-    if (cancelled instanceof Utils.BooleanHolder
-        && user instanceof Pokemon
-        && target instanceof Pokemon
-        && typeof moveId === "number"
-        && ignoresBypass instanceof Utils.BooleanHolder) {
+    if ((this.side === ArenaTagSide.PLAYER) === defender.isPlayer()
+        && this.protectConditionFunc(arena, moveId)) {
+      if (!isProtected.value) {
+        isProtected.value = true;
+        if (!simulated) {
+          attacker.stopMultiHit(defender);
 
-      if ((this.side === ArenaTagSide.PLAYER) === target.isPlayer()
-          && this.protectConditionFunc(arena, moveId)) {
-        if (!cancelled.value) {
-          cancelled.value = true;
-          user.stopMultiHit(target);
-
-          new CommonBattleAnim(CommonAnim.PROTECT, target).play(arena.scene);
-          arena.scene.queueMessage(i18next.t("arenaTag:conditionalProtectApply", { moveName: super.getMoveName(), pokemonNameWithAffix: getPokemonNameWithAffix(target) }));
+          new CommonBattleAnim(CommonAnim.PROTECT, defender).play(arena.scene);
+          arena.scene.queueMessage(i18next.t("arenaTag:conditionalProtectApply", { moveName: super.getMoveName(), pokemonNameWithAffix: getPokemonNameWithAffix(defender) }));
         }
-
-        ignoresBypass.value = ignoresBypass.value || this.ignoresBypass;
-        return true;
       }
+
+      ignoresProtectBypass.value = ignoresProtectBypass.value || this.ignoresBypass;
+      return true;
     }
     return false;
   }
@@ -296,7 +300,7 @@ export class ConditionalProtectTag extends ArenaTag {
  */
 const QuickGuardConditionFunc: ProtectConditionFunc = (arena, moveId) => {
   const move = allMoves[moveId];
-  const priority = new Utils.NumberHolder(move.priority);
+  const priority = new NumberHolder(move.priority);
   const effectPhase = arena.scene.getCurrentPhase();
 
   if (effectPhase instanceof MoveEffectPhase) {
@@ -460,7 +464,7 @@ class WishTag extends ArenaTag {
       if (user) {
         this.battlerIndex = user.getBattlerIndex();
         this.triggerMessage = i18next.t("arenaTag:wishTagOnAdd", { pokemonNameWithAffix: getPokemonNameWithAffix(user) });
-        this.healHp = Utils.toDmgValue(user.getMaxHp() / 2);
+        this.healHp = toDmgValue(user.getMaxHp() / 2);
       } else {
         console.warn("Failed to get source for WishTag onAdd");
       }
@@ -497,12 +501,19 @@ export class WeakenMoveTypeTag extends ArenaTag {
     this.weakenedType = type;
   }
 
-  apply(arena: Arena, args: any[]): boolean {
-    if ((args[0] as Type) === this.weakenedType) {
-      (args[1] as Utils.NumberHolder).value *= 0.33;
+  /**
+   * Reduces an attack's power by 0.33x if it matches this tag's weakened type.
+   * @param arena n/a
+   * @param simulated n/a
+   * @param type the attack's {@linkcode Type}
+   * @param power a {@linkcode NumberHolder} containing the attack's power
+   * @returns `true` if the attack's power was reduced; `false` otherwise.
+   */
+  override apply(arena: Arena, simulated: boolean, type: Type, power: NumberHolder): boolean {
+    if (type === this.weakenedType) {
+      power.value *= 0.33;
       return true;
     }
-
     return false;
   }
 }
@@ -563,13 +574,12 @@ export class IonDelugeTag extends ArenaTag {
   /**
    * Converts Normal-type moves to Electric type
    * @param arena n/a
-   * @param args
-   * - `[0]` {@linkcode Utils.NumberHolder} A container with a move's {@linkcode Type}
+   * @param simulated n/a
+   * @param moveType a {@linkcode NumberHolder} containing a move's {@linkcode Type}
    * @returns `true` if the given move type changed; `false` otherwise.
    */
-  apply(arena: Arena, args: any[]): boolean {
-    const moveType = args[0];
-    if (moveType instanceof Utils.NumberHolder && moveType.value === Type.NORMAL) {
+  override apply(arena: Arena, simulated: boolean, moveType: NumberHolder): boolean {
+    if (moveType.value === Type.NORMAL) {
       moveType.value = Type.ELECTRIC;
       return true;
     }
@@ -608,16 +618,22 @@ export class ArenaTrapTag extends ArenaTag {
     }
   }
 
-  apply(arena: Arena, args: any[]): boolean {
-    const pokemon = args[0] as Pokemon;
+  /**
+   * Activates the hazard effect onto a Pokemon when it enters the field
+   * @param arena the {@linkcode Arena} containing this tag
+   * @param simulated if `true`, only checks if the hazard would activate.
+   * @param pokemon the {@linkcode Pokemon} triggering this hazard
+   * @returns `true` if this hazard affects the given Pokemon; `false` otherwise.
+   */
+  override apply(arena: Arena, simulated: boolean, pokemon: Pokemon): boolean {
     if (this.sourceId === pokemon.id || (this.side === ArenaTagSide.PLAYER) !== pokemon.isPlayer()) {
       return false;
     }
 
-    return this.activateTrap(pokemon);
+    return this.activateTrap(pokemon, simulated);
   }
 
-  activateTrap(pokemon: Pokemon): boolean {
+  activateTrap(pokemon: Pokemon, simulated: boolean): boolean {
     return false;
   }
 
@@ -651,14 +667,18 @@ class SpikesTag extends ArenaTrapTag {
     }
   }
 
-  activateTrap(pokemon: Pokemon): boolean {
+  override activateTrap(pokemon: Pokemon, simulated: boolean): boolean {
     if (pokemon.isGrounded()) {
-      const cancelled = new Utils.BooleanHolder(false);
+      const cancelled = new BooleanHolder(false);
       applyAbAttrs(BlockNonDirectDamageAbAttr, pokemon, cancelled);
 
+      if (simulated) {
+        return !cancelled.value;
+      }
+
       if (!cancelled.value) {
         const damageHpRatio = 1 / (10 - 2 * this.layers);
-        const damage = Utils.toDmgValue(pokemon.getMaxHp() * damageHpRatio);
+        const damage = toDmgValue(pokemon.getMaxHp() * damageHpRatio);
 
         pokemon.scene.queueMessage(i18next.t("arenaTag:spikesActivateTrap", { pokemonNameWithAffix: getPokemonNameWithAffix(pokemon) }));
         pokemon.damageAndUpdate(damage, HitResult.OTHER);
@@ -702,8 +722,11 @@ class ToxicSpikesTag extends ArenaTrapTag {
     }
   }
 
-  activateTrap(pokemon: Pokemon): boolean {
+  override activateTrap(pokemon: Pokemon, simulated: boolean): boolean {
     if (pokemon.isGrounded()) {
+      if (simulated) {
+        return true;
+      }
       if (pokemon.isOfType(Type.POISON)) {
         this.neutralized = true;
         if (pokemon.scene.arena.removeTag(this.tagType)) {
@@ -807,8 +830,8 @@ class StealthRockTag extends ArenaTrapTag {
     return damageHpRatio;
   }
 
-  activateTrap(pokemon: Pokemon): boolean {
-    const cancelled = new Utils.BooleanHolder(false);
+  override activateTrap(pokemon: Pokemon, simulated: boolean): boolean {
+    const cancelled = new BooleanHolder(false);
     applyAbAttrs(BlockNonDirectDamageAbAttr,  pokemon, cancelled);
 
     if (cancelled.value) {
@@ -818,12 +841,16 @@ class StealthRockTag extends ArenaTrapTag {
     const damageHpRatio = this.getDamageHpRatio(pokemon);
 
     if (damageHpRatio) {
-      const damage = Utils.toDmgValue(pokemon.getMaxHp() * damageHpRatio);
+      if (simulated) {
+        return true;
+      }
+      const damage = toDmgValue(pokemon.getMaxHp() * damageHpRatio);
       pokemon.scene.queueMessage(i18next.t("arenaTag:stealthRockActivateTrap", { pokemonNameWithAffix: getPokemonNameWithAffix(pokemon) }));
       pokemon.damageAndUpdate(damage, HitResult.OTHER);
       if (pokemon.turnData) {
         pokemon.turnData.damageTaken += damage;
       }
+      return true;
     }
 
     return false;
@@ -853,14 +880,20 @@ class StickyWebTag extends ArenaTrapTag {
     }
   }
 
-  activateTrap(pokemon: Pokemon): boolean {
+  override activateTrap(pokemon: Pokemon, simulated: boolean): boolean {
     if (pokemon.isGrounded()) {
-      const cancelled = new Utils.BooleanHolder(false);
+      const cancelled = new BooleanHolder(false);
       applyAbAttrs(ProtectStatAbAttr, pokemon, cancelled);
+
+      if (simulated) {
+        return !cancelled.value;
+      }
+
       if (!cancelled.value) {
         pokemon.scene.queueMessage(i18next.t("arenaTag:stickyWebActivateTrap", { pokemonName: pokemon.getNameToRender() }));
-        const stages = new Utils.NumberHolder(-1);
+        const stages = new NumberHolder(-1);
         pokemon.scene.unshiftPhase(new StatStageChangePhase(pokemon.scene, pokemon.getBattlerIndex(), false, [ Stat.SPD ], stages.value));
+        return true;
       }
     }
 
@@ -879,8 +912,15 @@ export class TrickRoomTag extends ArenaTag {
     super(ArenaTagType.TRICK_ROOM, turnCount, Moves.TRICK_ROOM, sourceId);
   }
 
-  apply(arena: Arena, args: any[]): boolean {
-    const speedReversed = args[0] as Utils.BooleanHolder;
+  /**
+   * Reverses Speed-based turn order for all Pokemon on the field
+   * @param arena n/a
+   * @param simulated n/a
+   * @param speedReversed a {@linkcode BooleanHolder} used to flag if Speed-based
+   * turn order should be reversed.
+   * @returns `true` if turn order is successfully reversed; `false` otherwise
+   */
+  override apply(arena: Arena, simulated: boolean, speedReversed: BooleanHolder): boolean {
     speedReversed.value = !speedReversed.value;
     return true;
   }
@@ -1087,7 +1127,7 @@ class FireGrassPledgeTag extends ArenaTag {
       pokemon.scene.queueMessage(i18next.t("arenaTag:fireGrassPledgeLapse", { pokemonNameWithAffix: getPokemonNameWithAffix(pokemon) }));
       // TODO: Replace this with a proper animation
       pokemon.scene.unshiftPhase(new CommonAnimPhase(pokemon.scene, pokemon.getBattlerIndex(), pokemon.getBattlerIndex(), CommonAnim.MAGMA_STORM));
-      pokemon.damageAndUpdate(Utils.toDmgValue(pokemon.getMaxHp() / 8));
+      pokemon.damageAndUpdate(toDmgValue(pokemon.getMaxHp() / 8));
     });
 
     return super.lapse(arena);
@@ -1111,8 +1151,15 @@ class WaterFirePledgeTag extends ArenaTag {
     arena.scene.queueMessage(i18next.t(`arenaTag:waterFirePledgeOnAdd${this.side === ArenaTagSide.PLAYER ? "Player" : this.side === ArenaTagSide.ENEMY ? "Enemy" : ""}`));
   }
 
-  override apply(arena: Arena, args: any[]): boolean {
-    const moveChance = args[0] as Utils.NumberHolder;
+  /**
+   * Doubles the chance for the given move's secondary effect(s) to trigger
+   * @param arena the {@linkcode Arena} containing this tag
+   * @param simulated n/a
+   * @param moveChance a {@linkcode NumberHolder} containing
+   * the move's current effect chance
+   * @returns `true` if the move's effect chance was doubled (currently always `true`)
+   */
+  override apply(arena: Arena, simulated: boolean, moveChance: NumberHolder): boolean {
     moveChance.value *= 2;
     return true;
   }
diff --git a/src/data/move.ts b/src/data/move.ts
index ce36ef844e2..1f60ad1a8f5 100644
--- a/src/data/move.ts
+++ b/src/data/move.ts
@@ -808,7 +808,7 @@ export default class Move implements Localizable {
     source.scene.applyModifiers(PokemonMultiHitModifier, source.isPlayer(), source, new Utils.IntegerHolder(0), power);
 
     if (!this.hasAttr(TypelessAttr)) {
-      source.scene.arena.applyTags(WeakenMoveTypeTag, this.type, power);
+      source.scene.arena.applyTags(WeakenMoveTypeTag, simulated, this.type, power);
       source.scene.applyModifiers(AttackTypeBoosterModifier, source.isPlayer(), source, this.type, power);
     }
 
@@ -1026,7 +1026,7 @@ export class MoveEffectAttr extends MoveAttr {
 
     if (!move.hasAttr(FlinchAttr) || moveChance.value <= move.chance) {
       const userSide = user.isPlayer() ? ArenaTagSide.PLAYER : ArenaTagSide.ENEMY;
-      user.scene.arena.applyTagsForSide(ArenaTagType.WATER_FIRE_PLEDGE, userSide, moveChance);
+      user.scene.arena.applyTagsForSide(ArenaTagType.WATER_FIRE_PLEDGE, userSide, false, moveChance);
     }
 
     if (!selfEffect) {
diff --git a/src/data/pokemon-forms.ts b/src/data/pokemon-forms.ts
index 03b6b89e5b1..7cc20d50fb9 100644
--- a/src/data/pokemon-forms.ts
+++ b/src/data/pokemon-forms.ts
@@ -799,8 +799,8 @@ export const pokemonFormChanges: PokemonFormChanges = {
   [Species.ZYGARDE]: [
     new SpeciesFormChange(Species.ZYGARDE, "50-pc", "complete", new SpeciesFormChangeManualTrigger(), true),
     new SpeciesFormChange(Species.ZYGARDE, "complete", "50-pc", new SpeciesFormChangeManualTrigger(), true),
-    new SpeciesFormChange(Species.ZYGARDE, "10-pc", "complete", new SpeciesFormChangeManualTrigger(), true),
-    new SpeciesFormChange(Species.ZYGARDE, "complete", "10-pc", new SpeciesFormChangeManualTrigger(), true)
+    new SpeciesFormChange(Species.ZYGARDE, "10-pc", "10-complete", new SpeciesFormChangeManualTrigger(), true),
+    new SpeciesFormChange(Species.ZYGARDE, "10-complete", "10-pc", new SpeciesFormChangeManualTrigger(), true)
   ],
   [Species.DIANCIE]: [
     new SpeciesFormChange(Species.DIANCIE, "", SpeciesFormKey.MEGA, new SpeciesFormChangeItemTrigger(FormChangeItem.DIANCITE))
diff --git a/src/data/pokemon-species.ts b/src/data/pokemon-species.ts
index 8bb23cfc208..eb1b761e306 100644
--- a/src/data/pokemon-species.ts
+++ b/src/data/pokemon-species.ts
@@ -425,6 +425,7 @@ export abstract class PokemonSpeciesForm {
       case "hero":
       case "roaming":
       case "complete":
+      case "10-complete":
       case "10":
       case "10-pc":
       case "super":
@@ -2135,7 +2136,8 @@ export function initSpecies() {
       new PokemonForm("10% Forme", "10", Type.DRAGON, Type.GROUND, 1.2, 33.5, Abilities.AURA_BREAK, Abilities.NONE, Abilities.NONE, 486, 54, 100, 71, 61, 85, 115, 3, 0, 300, false, null, true),
       new PokemonForm("50% Forme Power Construct", "50-pc", Type.DRAGON, Type.GROUND, 5, 305, Abilities.POWER_CONSTRUCT, Abilities.NONE, Abilities.NONE, 600, 108, 100, 121, 81, 95, 95, 3, 0, 300, false, "", true),
       new PokemonForm("10% Forme Power Construct", "10-pc", Type.DRAGON, Type.GROUND, 1.2, 33.5, Abilities.POWER_CONSTRUCT, Abilities.NONE, Abilities.NONE, 486, 54, 100, 71, 61, 85, 115, 3, 0, 300, false, "10", true),
-      new PokemonForm("Complete Forme", "complete", Type.DRAGON, Type.GROUND, 4.5, 610, Abilities.POWER_CONSTRUCT, Abilities.NONE, Abilities.NONE, 708, 216, 100, 121, 91, 95, 85, 3, 0, 300),
+      new PokemonForm("Complete Forme (50% PC)", "complete", Type.DRAGON, Type.GROUND, 4.5, 610, Abilities.POWER_CONSTRUCT, Abilities.NONE, Abilities.NONE, 708, 216, 100, 121, 91, 95, 85, 3, 0, 300),
+      new PokemonForm("Complete Forme (10% PC)", "10-complete", Type.DRAGON, Type.GROUND, 4.5, 610, Abilities.POWER_CONSTRUCT, Abilities.NONE, Abilities.NONE, 708, 216, 100, 121, 91, 95, 85, 3, 0, 300, false, "complete"),
     ),
     new PokemonSpecies(Species.DIANCIE, 6, false, false, true, "Jewel Pokémon", Type.ROCK, Type.FAIRY, 0.7, 8.8, Abilities.CLEAR_BODY, Abilities.NONE, Abilities.NONE, 600, 50, 100, 150, 100, 150, 50, 3, 50, 300, GrowthRate.SLOW, null, false, true,
       new PokemonForm("Normal", "", Type.ROCK, Type.FAIRY, 0.7, 8.8, Abilities.CLEAR_BODY, Abilities.NONE, Abilities.NONE, 600, 50, 100, 150, 100, 150, 50, 3, 50, 300, false, null, true),
diff --git a/src/field/arena.ts b/src/field/arena.ts
index 1e164903e9d..ad1846884fc 100644
--- a/src/field/arena.ts
+++ b/src/field/arena.ts
@@ -579,26 +579,28 @@ export class Arena {
    * Applies each `ArenaTag` in this Arena, based on which side (self, enemy, or both) is passed in as a parameter
    * @param tagType Either an {@linkcode ArenaTagType} string, or an actual {@linkcode ArenaTag} class to filter which ones to apply
    * @param side {@linkcode ArenaTagSide} which side's arena tags to apply
+   * @param simulated if `true`, this applies arena tags without changing game state
    * @param args array of parameters that the called upon tags may need
    */
-  applyTagsForSide(tagType: ArenaTagType | Constructor<ArenaTag>, side: ArenaTagSide, ...args: unknown[]): void {
+  applyTagsForSide(tagType: ArenaTagType | Constructor<ArenaTag>, side: ArenaTagSide, simulated: boolean, ...args: unknown[]): void {
     let tags = typeof tagType === "string"
       ? this.tags.filter(t => t.tagType === tagType)
       : this.tags.filter(t => t instanceof tagType);
     if (side !== ArenaTagSide.BOTH) {
       tags = tags.filter(t => t.side === side);
     }
-    tags.forEach(t => t.apply(this, args));
+    tags.forEach(t => t.apply(this, simulated, ...args));
   }
 
   /**
    * Applies the specified tag to both sides (ie: both user and trainer's tag that match the Tag specified)
    * by calling {@linkcode applyTagsForSide()}
    * @param tagType Either an {@linkcode ArenaTagType} string, or an actual {@linkcode ArenaTag} class to filter which ones to apply
+   * @param simulated if `true`, this applies arena tags without changing game state
    * @param args array of parameters that the called upon tags may need
    */
-  applyTags(tagType: ArenaTagType | Constructor<ArenaTag>, ...args: unknown[]): void {
-    this.applyTagsForSide(tagType, ArenaTagSide.BOTH, ...args);
+  applyTags(tagType: ArenaTagType | Constructor<ArenaTag>, simulated: boolean, ...args: unknown[]): void {
+    this.applyTagsForSide(tagType, ArenaTagSide.BOTH, simulated, ...args);
   }
 
   /**
diff --git a/src/field/pokemon.ts b/src/field/pokemon.ts
index 3676e8dfb58..26a020d1b87 100644
--- a/src/field/pokemon.ts
+++ b/src/field/pokemon.ts
@@ -1730,7 +1730,7 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
     applyMoveAttrs(VariableMoveTypeAttr, this, null, move, moveTypeHolder);
     applyPreAttackAbAttrs(MoveTypeChangeAbAttr, this, null, move, simulated, moveTypeHolder);
 
-    this.scene.arena.applyTags(ArenaTagType.ION_DELUGE, moveTypeHolder);
+    this.scene.arena.applyTags(ArenaTagType.ION_DELUGE, simulated, moveTypeHolder);
     if (this.getTag(BattlerTagType.ELECTRIFIED)) {
       moveTypeHolder.value = Type.ELECTRIC;
     }
@@ -2800,7 +2800,7 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
 
     /** Reduces damage if this Pokemon has a relevant screen (e.g. Light Screen for special attacks) */
     const screenMultiplier = new Utils.NumberHolder(1);
-    this.scene.arena.applyTagsForSide(WeakenMoveScreenTag, defendingSide, move.category, this.scene.currentBattle.double, screenMultiplier);
+    this.scene.arena.applyTagsForSide(WeakenMoveScreenTag, defendingSide, simulated, moveCategory, screenMultiplier);
 
     /**
      * For each {@linkcode HitsTagAttr} the move has, doubles the damage of the move if:
diff --git a/src/modifier/modifier-type.ts b/src/modifier/modifier-type.ts
index f20aa854bdf..32173a6fead 100644
--- a/src/modifier/modifier-type.ts
+++ b/src/modifier/modifier-type.ts
@@ -2227,7 +2227,8 @@ export function getPlayerShopModifierTypeOptionsForWave(waveIndex: integer, base
     ],
     [
       new ModifierTypeOption(modifierTypes.HYPER_POTION(), 0, baseCost * 0.8),
-      new ModifierTypeOption(modifierTypes.MAX_REVIVE(), 0, baseCost * 2.75)
+      new ModifierTypeOption(modifierTypes.MAX_REVIVE(), 0, baseCost * 2.75),
+      new ModifierTypeOption(modifierTypes.MEMORY_MUSHROOM(), 0, baseCost * 4)
     ],
     [
       new ModifierTypeOption(modifierTypes.MAX_POTION(), 0, baseCost * 1.5),
diff --git a/src/modifier/modifier.ts b/src/modifier/modifier.ts
index dd8c82357a7..689b81be82f 100644
--- a/src/modifier/modifier.ts
+++ b/src/modifier/modifier.ts
@@ -11,7 +11,7 @@ import Pokemon, { type PlayerPokemon } from "#app/field/pokemon";
 import { getPokemonNameWithAffix } from "#app/messages";
 import Overrides from "#app/overrides";
 import { EvolutionPhase } from "#app/phases/evolution-phase";
-import { LearnMovePhase } from "#app/phases/learn-move-phase";
+import { LearnMovePhase, LearnMoveType } from "#app/phases/learn-move-phase";
 import { LevelUpPhase } from "#app/phases/level-up-phase";
 import { PokemonHealPhase } from "#app/phases/pokemon-heal-phase";
 import { achvs } from "#app/system/achv";
@@ -2235,7 +2235,7 @@ export class TmModifier extends ConsumablePokemonModifier {
    */
   override apply(playerPokemon: PlayerPokemon): boolean {
 
-    playerPokemon.scene.unshiftPhase(new LearnMovePhase(playerPokemon.scene, playerPokemon.scene.getParty().indexOf(playerPokemon), this.type.moveId, true));
+    playerPokemon.scene.unshiftPhase(new LearnMovePhase(playerPokemon.scene, playerPokemon.scene.getParty().indexOf(playerPokemon), this.type.moveId, LearnMoveType.TM));
 
     return true;
   }
@@ -2255,8 +2255,9 @@ export class RememberMoveModifier extends ConsumablePokemonModifier {
    * @param playerPokemon The {@linkcode PlayerPokemon} that should remember the move
    * @returns always `true`
    */
-  override apply(playerPokemon: PlayerPokemon): boolean {
-    playerPokemon.scene.unshiftPhase(new LearnMovePhase(playerPokemon.scene, playerPokemon.scene.getParty().indexOf(playerPokemon), playerPokemon.getLearnableLevelMoves()[this.levelMoveIndex]));
+  override apply(playerPokemon: PlayerPokemon, cost?: number): boolean {
+
+    playerPokemon.scene.unshiftPhase(new LearnMovePhase(playerPokemon.scene, playerPokemon.scene.getParty().indexOf(playerPokemon), playerPokemon.getLearnableLevelMoves()[this.levelMoveIndex], LearnMoveType.MEMORY, cost));
 
     return true;
   }
diff --git a/src/phases/learn-move-phase.ts b/src/phases/learn-move-phase.ts
index 6480577258a..eb7cfbb65ef 100644
--- a/src/phases/learn-move-phase.ts
+++ b/src/phases/learn-move-phase.ts
@@ -2,24 +2,37 @@ import BattleScene from "#app/battle-scene";
 import { initMoveAnim, loadMoveAnimAssets } from "#app/data/battle-anims";
 import Move, { allMoves } from "#app/data/move";
 import { SpeciesFormChangeMoveLearnedTrigger } from "#app/data/pokemon-forms";
-import { Moves } from "#app/enums/moves";
+import { Moves } from "#enums/moves";
 import { getPokemonNameWithAffix } from "#app/messages";
+import Overrides from "#app/overrides";
 import EvolutionSceneHandler from "#app/ui/evolution-scene-handler";
 import { SummaryUiMode } from "#app/ui/summary-ui-handler";
 import { Mode } from "#app/ui/ui";
 import i18next from "i18next";
-import { PlayerPartyMemberPokemonPhase } from "./player-party-member-pokemon-phase";
+import { PlayerPartyMemberPokemonPhase } from "#app/phases/player-party-member-pokemon-phase";
 import Pokemon from "#app/field/pokemon";
+import { SelectModifierPhase } from "#app/phases/select-modifier-phase";
+
+export enum LearnMoveType {
+  /** For learning a move via level-up, evolution, or other non-item-based event */
+  LEARN_MOVE,
+  /** For learning a move via Memory Mushroom */
+  MEMORY,
+  /** For learning a move via TM */
+  TM
+}
 
 export class LearnMovePhase extends PlayerPartyMemberPokemonPhase {
   private moveId: Moves;
   private messageMode: Mode;
-  private fromTM: boolean;
+  private learnMoveType;
+  private cost: number;
 
-  constructor(scene: BattleScene, partyMemberIndex: integer, moveId: Moves, fromTM?: boolean) {
+  constructor(scene: BattleScene, partyMemberIndex: integer, moveId: Moves, learnMoveType: LearnMoveType = LearnMoveType.LEARN_MOVE, cost: number = -1) {
     super(scene, partyMemberIndex);
     this.moveId = moveId;
-    this.fromTM = fromTM ?? false;
+    this.learnMoveType = learnMoveType;
+    this.cost = cost;
   }
 
   start() {
@@ -136,11 +149,23 @@ export class LearnMovePhase extends PlayerPartyMemberPokemonPhase {
    * @param Pokemon The Pokemon learning the move
    */
   async learnMove(index: number, move: Move, pokemon: Pokemon, textMessage?: string) {
-    if (this.fromTM) {
+    if (this.learnMoveType === LearnMoveType.TM) {
       if (!pokemon.usedTMs) {
         pokemon.usedTMs = [];
       }
       pokemon.usedTMs.push(this.moveId);
+      this.scene.tryRemovePhase((phase) => phase instanceof SelectModifierPhase);
+    } else if (this.learnMoveType === LearnMoveType.MEMORY) {
+      if (this.cost !== -1) {
+        if (!Overrides.WAIVE_ROLL_FEE_OVERRIDE) {
+          this.scene.money -= this.cost;
+          this.scene.updateMoneyText();
+          this.scene.animateMoneyChanged(false);
+        }
+        this.scene.playSound("se/buy");
+      } else {
+        this.scene.tryRemovePhase((phase) => phase instanceof SelectModifierPhase);
+      }
     }
     pokemon.setMove(index, this.moveId);
     initMoveAnim(this.scene, this.moveId).then(() => {
diff --git a/src/phases/move-effect-phase.ts b/src/phases/move-effect-phase.ts
index 581cd5ff017..dc880f85e23 100644
--- a/src/phases/move-effect-phase.ts
+++ b/src/phases/move-effect-phase.ts
@@ -99,8 +99,9 @@ export class MoveEffectPhase extends PokemonPhase {
       const targetHitChecks = Object.fromEntries(targets.map(p => [ p.getBattlerIndex(), this.hitCheck(p) ]));
       const hasActiveTargets = targets.some(t => t.isActive(true));
 
-      /** Check if the target is immune via ability to the attacking move */
-      const isImmune = targets[0].hasAbilityWithAttr(TypeImmunityAbAttr) && (targets[0].getAbility()?.getAttrs(TypeImmunityAbAttr)?.[0]?.getImmuneType() === user.getMoveType(move));
+      /** Check if the target is immune via ability to the attacking move, and NOT in semi invulnerable state */
+      const isImmune = targets[0].hasAbilityWithAttr(TypeImmunityAbAttr) && (targets[0].getAbility()?.getAttrs(TypeImmunityAbAttr)?.[0]?.getImmuneType() === user.getMoveType(move))
+          && !targets[0].getTag(SemiInvulnerableTag);
 
       /**
          * If no targets are left for the move to hit (FAIL), or the invoked move is single-target
@@ -140,7 +141,7 @@ export class MoveEffectPhase extends PokemonPhase {
           const bypassIgnoreProtect = new Utils.BooleanHolder(false);
           /** If the move is not targeting a Pokemon on the user's side, try to apply conditional protection effects */
           if (!this.move.getMove().isAllyTarget()) {
-            this.scene.arena.applyTagsForSide(ConditionalProtectTag, targetSide, hasConditionalProtectApplied, user, target, move.id, bypassIgnoreProtect);
+            this.scene.arena.applyTagsForSide(ConditionalProtectTag, targetSide, false, hasConditionalProtectApplied, user, target, move.id, bypassIgnoreProtect);
           }
 
           /** Is the target protected by Protect, etc. or a relevant conditional protection effect? */
@@ -148,8 +149,9 @@ export class MoveEffectPhase extends PokemonPhase {
               && (hasConditionalProtectApplied.value || (!target.findTags(t => t instanceof DamageProtectedTag).length && target.findTags(t => t instanceof ProtectedTag).find(t => target.lapseTag(t.tagType)))
               || (this.move.getMove().category !== MoveCategory.STATUS && target.findTags(t => t instanceof DamageProtectedTag).find(t => target.lapseTag(t.tagType))));
 
-          /** Is the pokemon immune due to an ablility?  */
-          const isImmune = target.hasAbilityWithAttr(TypeImmunityAbAttr) && (target.getAbility()?.getAttrs(TypeImmunityAbAttr)?.[0]?.getImmuneType() === user.getMoveType(move));
+          /** Is the pokemon immune due to an ablility, and also not in a semi invulnerable state?  */
+          const isImmune = target.hasAbilityWithAttr(TypeImmunityAbAttr) && (target.getAbility()?.getAttrs(TypeImmunityAbAttr)?.[0]?.getImmuneType() === user.getMoveType(move))
+              && !target.getTag(SemiInvulnerableTag);
 
           /**
              * If the move missed a target, stop all future hits against that target
diff --git a/src/phases/move-phase.ts b/src/phases/move-phase.ts
index d3a2a3329fd..f50cfbd78ac 100644
--- a/src/phases/move-phase.ts
+++ b/src/phases/move-phase.ts
@@ -147,8 +147,9 @@ export class MovePhase extends BattlePhase {
     const moveQueue = this.pokemon.getMoveQueue();
 
     if (targets.length === 0 || (moveQueue.length && moveQueue[0].move === Moves.NONE)) {
+      this.showMoveText();
       this.showFailedText();
-      this.cancelled = true;
+      this.cancel();
     }
   }
 
diff --git a/src/phases/post-summon-phase.ts b/src/phases/post-summon-phase.ts
index b99c0b90fd8..617bb8b1cfe 100644
--- a/src/phases/post-summon-phase.ts
+++ b/src/phases/post-summon-phase.ts
@@ -20,7 +20,7 @@ export class PostSummonPhase extends PokemonPhase {
     if (pokemon.status?.effect === StatusEffect.TOXIC) {
       pokemon.status.turnCount = 0;
     }
-    this.scene.arena.applyTags(ArenaTrapTag, pokemon);
+    this.scene.arena.applyTags(ArenaTrapTag, false, pokemon);
 
     // If this is mystery encounter and has post summon phase tag, apply post summon effects
     if (this.scene.currentBattle.isBattleMysteryEncounter() && pokemon.findTags(t => t instanceof MysteryEncounterPostSummonTag).length > 0) {
diff --git a/src/phases/select-modifier-phase.ts b/src/phases/select-modifier-phase.ts
index 159af979fa0..f9b3e978923 100644
--- a/src/phases/select-modifier-phase.ts
+++ b/src/phases/select-modifier-phase.ts
@@ -16,26 +16,32 @@ export class SelectModifierPhase extends BattlePhase {
   private rerollCount: integer;
   private modifierTiers?: ModifierTier[];
   private customModifierSettings?: CustomModifierSettings;
+  private isCopy: boolean;
 
-  constructor(scene: BattleScene, rerollCount: integer = 0, modifierTiers?: ModifierTier[], customModifierSettings?: CustomModifierSettings) {
+  private typeOptions: ModifierTypeOption[];
+
+  constructor(scene: BattleScene, rerollCount: integer = 0, modifierTiers?: ModifierTier[], customModifierSettings?: CustomModifierSettings, isCopy: boolean = false) {
     super(scene);
 
     this.rerollCount = rerollCount;
     this.modifierTiers = modifierTiers;
     this.customModifierSettings = customModifierSettings;
+    this.isCopy = isCopy;
   }
 
   start() {
     super.start();
 
-    if (!this.rerollCount) {
+    if (!this.rerollCount && !this.isCopy) {
       this.updateSeed();
-    } else {
+    } else if (this.rerollCount) {
       this.scene.reroll = false;
     }
 
     const party = this.scene.getParty();
-    regenerateModifierPoolThresholds(party, this.getPoolType(), this.rerollCount);
+    if (!this.isCopy) {
+      regenerateModifierPoolThresholds(party, this.getPoolType(), this.rerollCount);
+    }
     const modifierCount = new Utils.IntegerHolder(3);
     if (this.isPlayer()) {
       this.scene.applyModifiers(ExtraModifierModifier, true, modifierCount);
@@ -54,7 +60,7 @@ export class SelectModifierPhase extends BattlePhase {
       }
     }
 
-    const typeOptions: ModifierTypeOption[] = this.getModifierTypeOptions(modifierCount.value);
+    this.typeOptions = this.getModifierTypeOptions(modifierCount.value);
 
     const modifierSelectCallback = (rowCursor: integer, cursor: integer) => {
       if (rowCursor < 0 || cursor < 0) {
@@ -63,13 +69,13 @@ export class SelectModifierPhase extends BattlePhase {
             this.scene.ui.revertMode();
             this.scene.ui.setMode(Mode.MESSAGE);
             super.end();
-          }, () => this.scene.ui.setMode(Mode.MODIFIER_SELECT, this.isPlayer(), typeOptions, modifierSelectCallback, this.getRerollCost(typeOptions, this.scene.lockModifierTiers)));
+          }, () => this.scene.ui.setMode(Mode.MODIFIER_SELECT, this.isPlayer(), this.typeOptions, modifierSelectCallback, this.getRerollCost(this.scene.lockModifierTiers)));
         });
         return false;
       }
       let modifierType: ModifierType;
       let cost: integer;
-      const rerollCost = this.getRerollCost(typeOptions, this.scene.lockModifierTiers);
+      const rerollCost = this.getRerollCost(this.scene.lockModifierTiers);
       switch (rowCursor) {
       case 0:
         switch (cursor) {
@@ -79,7 +85,7 @@ export class SelectModifierPhase extends BattlePhase {
             return false;
           } else {
             this.scene.reroll = true;
-            this.scene.unshiftPhase(new SelectModifierPhase(this.scene, this.rerollCount + 1, typeOptions.map(o => o.type?.tier).filter(t => t !== undefined) as ModifierTier[]));
+            this.scene.unshiftPhase(new SelectModifierPhase(this.scene, this.rerollCount + 1, this.typeOptions.map(o => o.type?.tier).filter(t => t !== undefined) as ModifierTier[]));
             this.scene.ui.clearText();
             this.scene.ui.setMode(Mode.MESSAGE).then(() => super.end());
             if (!Overrides.WAIVE_ROLL_FEE_OVERRIDE) {
@@ -98,13 +104,13 @@ export class SelectModifierPhase extends BattlePhase {
               const itemModifier = itemModifiers[itemIndex];
               this.scene.tryTransferHeldItemModifier(itemModifier, party[toSlotIndex], true, itemQuantity);
             } else {
-              this.scene.ui.setMode(Mode.MODIFIER_SELECT, this.isPlayer(), typeOptions, modifierSelectCallback, this.getRerollCost(typeOptions, this.scene.lockModifierTiers));
+              this.scene.ui.setMode(Mode.MODIFIER_SELECT, this.isPlayer(), this.typeOptions, modifierSelectCallback, this.getRerollCost(this.scene.lockModifierTiers));
             }
           }, PartyUiHandler.FilterItemMaxStacks);
           break;
         case 2:
           this.scene.ui.setModeWithoutClear(Mode.PARTY, PartyUiMode.CHECK, -1, () => {
-            this.scene.ui.setMode(Mode.MODIFIER_SELECT, this.isPlayer(), typeOptions, modifierSelectCallback, this.getRerollCost(typeOptions, this.scene.lockModifierTiers));
+            this.scene.ui.setMode(Mode.MODIFIER_SELECT, this.isPlayer(), this.typeOptions, modifierSelectCallback, this.getRerollCost(this.scene.lockModifierTiers));
           });
           break;
         case 3:
@@ -115,21 +121,21 @@ export class SelectModifierPhase extends BattlePhase {
           }
           this.scene.lockModifierTiers = !this.scene.lockModifierTiers;
           const uiHandler = this.scene.ui.getHandler() as ModifierSelectUiHandler;
-          uiHandler.setRerollCost(this.getRerollCost(typeOptions, this.scene.lockModifierTiers));
+          uiHandler.setRerollCost(this.getRerollCost(this.scene.lockModifierTiers));
           uiHandler.updateLockRaritiesText();
           uiHandler.updateRerollCostText();
           return false;
         }
         return true;
       case 1:
-        if (typeOptions.length === 0) {
+        if (this.typeOptions.length === 0) {
           this.scene.ui.clearText();
           this.scene.ui.setMode(Mode.MESSAGE);
           super.end();
           return true;
         }
-        if (typeOptions[cursor].type) {
-          modifierType = typeOptions[cursor].type;
+        if (this.typeOptions[cursor].type) {
+          modifierType = this.typeOptions[cursor].type;
         }
         break;
       default:
@@ -151,8 +157,16 @@ export class SelectModifierPhase extends BattlePhase {
       }
 
       const applyModifier = (modifier: Modifier, playSound: boolean = false) => {
-        const result = this.scene.addModifier(modifier, false, playSound);
-        if (cost) {
+        const result = this.scene.addModifier(modifier, false, playSound, undefined, undefined, cost);
+        // Queue a copy of this phase when applying a TM or Memory Mushroom.
+        // If the player selects either of these, then escapes out of consuming them,
+        // they are returned to a shop in the same state.
+        if (modifier.type instanceof RememberMoveModifierType ||
+            modifier.type instanceof TmModifierType) {
+          this.scene.unshiftPhase(this.copy());
+        }
+
+        if (cost && !(modifier.type instanceof RememberMoveModifierType)) {
           result.then(success => {
             if (success) {
               if (!Overrides.WAIVE_ROLL_FEE_OVERRIDE) {
@@ -189,7 +203,7 @@ export class SelectModifierPhase extends BattlePhase {
                 applyModifier(modifier, true);
               });
             } else {
-              this.scene.ui.setMode(Mode.MODIFIER_SELECT, this.isPlayer(), typeOptions, modifierSelectCallback, this.getRerollCost(typeOptions, this.scene.lockModifierTiers));
+              this.scene.ui.setMode(Mode.MODIFIER_SELECT, this.isPlayer(), this.typeOptions, modifierSelectCallback, this.getRerollCost(this.scene.lockModifierTiers));
             }
           }, modifierType.selectFilter);
         } else {
@@ -216,7 +230,7 @@ export class SelectModifierPhase extends BattlePhase {
                 applyModifier(modifier!, true); // TODO: is the bang correct?
               });
             } else {
-              this.scene.ui.setMode(Mode.MODIFIER_SELECT, this.isPlayer(), typeOptions, modifierSelectCallback, this.getRerollCost(typeOptions, this.scene.lockModifierTiers));
+              this.scene.ui.setMode(Mode.MODIFIER_SELECT, this.isPlayer(), this.typeOptions, modifierSelectCallback, this.getRerollCost(this.scene.lockModifierTiers));
             }
           }, pokemonModifierType.selectFilter, modifierType instanceof PokemonMoveModifierType ? (modifierType as PokemonMoveModifierType).moveSelectFilter : undefined, tmMoveId, isPpRestoreModifier);
         }
@@ -226,7 +240,7 @@ export class SelectModifierPhase extends BattlePhase {
 
       return !cost!;// TODO: is the bang correct?
     };
-    this.scene.ui.setMode(Mode.MODIFIER_SELECT, this.isPlayer(), typeOptions, modifierSelectCallback, this.getRerollCost(typeOptions, this.scene.lockModifierTiers));
+    this.scene.ui.setMode(Mode.MODIFIER_SELECT, this.isPlayer(), this.typeOptions, modifierSelectCallback, this.getRerollCost(this.scene.lockModifierTiers));
   }
 
   updateSeed(): void {
@@ -237,13 +251,13 @@ export class SelectModifierPhase extends BattlePhase {
     return true;
   }
 
-  getRerollCost(typeOptions: ModifierTypeOption[], lockRarities: boolean): number {
+  getRerollCost(lockRarities: boolean): number {
     let baseValue = 0;
     if (Overrides.WAIVE_ROLL_FEE_OVERRIDE) {
       return baseValue;
     } else if (lockRarities) {
       const tierValues = [ 50, 125, 300, 750, 2000 ];
-      for (const opt of typeOptions) {
+      for (const opt of this.typeOptions) {
         baseValue += tierValues[opt.type.tier ?? 0];
       }
     } else {
@@ -271,6 +285,16 @@ export class SelectModifierPhase extends BattlePhase {
     return getPlayerModifierTypeOptions(modifierCount, this.scene.getParty(), this.scene.lockModifierTiers ? this.modifierTiers : undefined, this.customModifierSettings);
   }
 
+  copy(): SelectModifierPhase {
+    return new SelectModifierPhase(
+      this.scene,
+      this.rerollCount,
+      this.modifierTiers,
+      { guaranteedModifierTypeOptions: this.typeOptions, rerollMultiplier: this.customModifierSettings?.rerollMultiplier, allowLuckUpgrades: false },
+      true
+    );
+  }
+
   addModifier(modifier: Modifier): Promise<boolean> {
     return this.scene.addModifier(modifier, false, true);
   }
diff --git a/src/phases/stat-stage-change-phase.ts b/src/phases/stat-stage-change-phase.ts
index bfe19ea9ca5..4c13b883445 100644
--- a/src/phases/stat-stage-change-phase.ts
+++ b/src/phases/stat-stage-change-phase.ts
@@ -64,8 +64,7 @@ export class StatStageChangePhase extends PokemonPhase {
       const cancelled = new BooleanHolder(false);
 
       if (!this.selfTarget && stages.value < 0) {
-        // TODO: Include simulate boolean when tag applications can be simulated
-        this.scene.arena.applyTagsForSide(MistTag, pokemon.isPlayer() ? ArenaTagSide.PLAYER : ArenaTagSide.ENEMY, cancelled);
+        this.scene.arena.applyTagsForSide(MistTag, pokemon.isPlayer() ? ArenaTagSide.PLAYER : ArenaTagSide.ENEMY, false, cancelled);
       }
 
       if (!cancelled.value && !this.selfTarget && stages.value < 0) {
diff --git a/src/phases/turn-start-phase.ts b/src/phases/turn-start-phase.ts
index 627cee4b06a..25c079007fd 100644
--- a/src/phases/turn-start-phase.ts
+++ b/src/phases/turn-start-phase.ts
@@ -45,7 +45,7 @@ export class TurnStartPhase extends FieldPhase {
 
     // Next, a check for Trick Room is applied to determine sort order.
     const speedReversed = new Utils.BooleanHolder(false);
-    this.scene.arena.applyTags(TrickRoomTag, speedReversed);
+    this.scene.arena.applyTags(TrickRoomTag, false, speedReversed);
 
     // Adjust the sort function based on whether Trick Room is active.
     orderedTargets.sort((a: Pokemon, b: Pokemon) => {
diff --git a/src/test/abilities/power_construct.test.ts b/src/test/abilities/power_construct.test.ts
index 662f5d06258..1a9e7d4818a 100644
--- a/src/test/abilities/power_construct.test.ts
+++ b/src/test/abilities/power_construct.test.ts
@@ -32,7 +32,7 @@ describe("Abilities - POWER CONSTRUCT", () => {
   });
 
   test(
-    "check if fainted pokemon switches to base form on arena reset",
+    "check if fainted 50% Power Construct Pokemon switches to base form on arena reset",
     async () => {
       const baseForm = 2,
         completeForm = 4;
@@ -41,7 +41,37 @@ describe("Abilities - POWER CONSTRUCT", () => {
         [Species.ZYGARDE]: completeForm,
       });
 
-      await game.startBattle([ Species.MAGIKARP, Species.ZYGARDE ]);
+      await game.classicMode.startBattle([ Species.MAGIKARP, Species.ZYGARDE ]);
+
+      const zygarde = game.scene.getParty().find((p) => p.species.speciesId === Species.ZYGARDE);
+      expect(zygarde).not.toBe(undefined);
+      expect(zygarde!.formIndex).toBe(completeForm);
+
+      zygarde!.hp = 0;
+      zygarde!.status = new Status(StatusEffect.FAINT);
+      expect(zygarde!.isFainted()).toBe(true);
+
+      game.move.select(Moves.SPLASH);
+      await game.doKillOpponents();
+      await game.phaseInterceptor.to(TurnEndPhase);
+      game.doSelectModifier();
+      await game.phaseInterceptor.to(QuietFormChangePhase);
+
+      expect(zygarde!.formIndex).toBe(baseForm);
+    },
+  );
+
+  test(
+    "check if fainted 10% Power Construct Pokemon switches to base form on arena reset",
+    async () => {
+      const baseForm = 3,
+        completeForm = 5;
+      game.override.startingWave(4);
+      game.override.starterForms({
+        [Species.ZYGARDE]: completeForm,
+      });
+
+      await game.classicMode.startBattle([ Species.MAGIKARP, Species.ZYGARDE ]);
 
       const zygarde = game.scene.getParty().find((p) => p.species.speciesId === Species.ZYGARDE);
       expect(zygarde).not.toBe(undefined);
diff --git a/src/test/abilities/volt_absorb.test.ts b/src/test/abilities/volt_absorb.test.ts
index 07907a34566..ec82b00ec5a 100644
--- a/src/test/abilities/volt_absorb.test.ts
+++ b/src/test/abilities/volt_absorb.test.ts
@@ -71,4 +71,23 @@ describe("Abilities - Volt Absorb", () => {
     await game.phaseInterceptor.to("BerryPhase", false);
     expect(enemyPokemon.hp).toBe(enemyPokemon.getMaxHp());
   });
+  it("regardless of accuracy should not trigger on pokemon in semi invulnerable state", async () => {
+    game.override.moveset(Moves.THUNDERBOLT);
+    game.override.enemyMoveset(Moves.DIVE);
+    game.override.enemySpecies(Species.MAGIKARP);
+    game.override.enemyAbility(Abilities.VOLT_ABSORB);
+
+    await game.classicMode.startBattle();
+
+    const enemyPokemon = game.scene.getEnemyPokemon()!;
+
+    game.move.select(Moves.THUNDERBOLT);
+    enemyPokemon.hp = enemyPokemon.hp - 1;
+    await game.setTurnOrder([ BattlerIndex.ENEMY, BattlerIndex.PLAYER ]);
+    await game.phaseInterceptor.to("MoveEffectPhase");
+
+    await game.move.forceMiss();
+    await game.phaseInterceptor.to("BerryPhase", false);
+    expect(enemyPokemon.hp).toBeLessThan(enemyPokemon.getMaxHp());
+  });
 });
diff --git a/src/test/items/lock_capsule.test.ts b/src/test/items/lock_capsule.test.ts
index 2667ecea2dc..0b6534b5eaf 100644
--- a/src/test/items/lock_capsule.test.ts
+++ b/src/test/items/lock_capsule.test.ts
@@ -1,7 +1,8 @@
 import { Abilities } from "#app/enums/abilities";
 import { Moves } from "#app/enums/moves";
-import { ModifierTypeOption, modifierTypes } from "#app/modifier/modifier-type";
+import { ModifierTier } from "#app/modifier/modifier-tier";
 import { SelectModifierPhase } from "#app/phases/select-modifier-phase";
+import { Mode } from "#app/ui/ui";
 import GameManager from "#test/utils/gameManager";
 import Phase from "phaser";
 import { afterEach, beforeAll, beforeEach, describe, expect, it } from "vitest";
@@ -32,15 +33,16 @@ describe("Items - Lock Capsule", () => {
   });
 
   it("doesn't set the cost of common tier items to 0", async () => {
-    await game.startBattle();
+    await game.classicMode.startBattle();
+    game.scene.overridePhase(new SelectModifierPhase(game.scene, 0, undefined, { guaranteedModifierTiers: [ ModifierTier.COMMON, ModifierTier.COMMON, ModifierTier.COMMON ], fillRemaining: false }));
 
-    game.move.select(Moves.SURF);
-    await game.phaseInterceptor.to(SelectModifierPhase, false);
+    game.onNextPrompt("SelectModifierPhase", Mode.MODIFIER_SELECT, () => {
+      const selectModifierPhase = game.scene.getCurrentPhase() as SelectModifierPhase;
+      const rerollCost = selectModifierPhase.getRerollCost(true);
+      expect(rerollCost).toBe(150);
+    });
 
-    const rewards = game.scene.getCurrentPhase() as SelectModifierPhase;
-    const potion = new ModifierTypeOption(modifierTypes.POTION(), 0, 40); // Common tier item
-    const rerollCost = rewards.getRerollCost([ potion, potion, potion ], true);
-
-    expect(rerollCost).toBe(150);
+    game.doSelectModifier();
+    await game.phaseInterceptor.to("SelectModifierPhase");
   }, 20000);
 });
diff --git a/src/test/moves/aurora_veil.test.ts b/src/test/moves/aurora_veil.test.ts
index e71d4ab9d11..243ba3a3269 100644
--- a/src/test/moves/aurora_veil.test.ts
+++ b/src/test/moves/aurora_veil.test.ts
@@ -111,7 +111,7 @@ const getMockedMoveDamage = (defender: Pokemon, attacker: Pokemon, move: Move) =
   const side = defender.isPlayer() ? ArenaTagSide.PLAYER : ArenaTagSide.ENEMY;
 
   if (defender.scene.arena.getTagOnSide(ArenaTagType.AURORA_VEIL, side)) {
-    defender.scene.arena.applyTagsForSide(ArenaTagType.AURORA_VEIL, side, move.category, defender.scene.currentBattle.double, multiplierHolder);
+    defender.scene.arena.applyTagsForSide(ArenaTagType.AURORA_VEIL, side, false, move.category, multiplierHolder);
   }
 
   return move.power * multiplierHolder.value;
diff --git a/src/test/moves/light_screen.test.ts b/src/test/moves/light_screen.test.ts
index 2308458003d..11b8144bb4e 100644
--- a/src/test/moves/light_screen.test.ts
+++ b/src/test/moves/light_screen.test.ts
@@ -94,7 +94,7 @@ const getMockedMoveDamage = (defender: Pokemon, attacker: Pokemon, move: Move) =
   const side = defender.isPlayer() ? ArenaTagSide.PLAYER : ArenaTagSide.ENEMY;
 
   if (defender.scene.arena.getTagOnSide(ArenaTagType.LIGHT_SCREEN, side)) {
-    defender.scene.arena.applyTagsForSide(ArenaTagType.LIGHT_SCREEN, side, move.category, defender.scene.currentBattle.double, multiplierHolder);
+    defender.scene.arena.applyTagsForSide(ArenaTagType.LIGHT_SCREEN, side, false, move.category, multiplierHolder);
   }
 
   return move.power * multiplierHolder.value;
diff --git a/src/test/moves/reflect.test.ts b/src/test/moves/reflect.test.ts
index 41a10988552..b18b2423895 100644
--- a/src/test/moves/reflect.test.ts
+++ b/src/test/moves/reflect.test.ts
@@ -94,7 +94,7 @@ const getMockedMoveDamage = (defender: Pokemon, attacker: Pokemon, move: Move) =
   const side = defender.isPlayer() ? ArenaTagSide.PLAYER : ArenaTagSide.ENEMY;
 
   if (defender.scene.arena.getTagOnSide(ArenaTagType.REFLECT, side)) {
-    defender.scene.arena.applyTagsForSide(ArenaTagType.REFLECT, side, move.category, defender.scene.currentBattle.double, multiplierHolder);
+    defender.scene.arena.applyTagsForSide(ArenaTagType.REFLECT, side, false, move.category, multiplierHolder);
   }
 
   return move.power * multiplierHolder.value;
diff --git a/src/test/phases/select-modifier-phase.test.ts b/src/test/phases/select-modifier-phase.test.ts
index ea50c7e6524..a945aff055b 100644
--- a/src/test/phases/select-modifier-phase.test.ts
+++ b/src/test/phases/select-modifier-phase.test.ts
@@ -63,11 +63,11 @@ describe("SelectModifierPhase", () => {
       new ModifierTypeOption(modifierTypes.REVIVE(), 0, 1000)
     ];
 
-    const selectModifierPhase1 = new SelectModifierPhase(scene);
-    const selectModifierPhase2 = new SelectModifierPhase(scene, 0, undefined, { rerollMultiplier: 2 });
+    const selectModifierPhase1 = new SelectModifierPhase(scene, 0, undefined, { guaranteedModifierTypeOptions: options });
+    const selectModifierPhase2 = new SelectModifierPhase(scene, 0, undefined, { guaranteedModifierTypeOptions: options, rerollMultiplier: 2 });
 
-    const cost1 = selectModifierPhase1.getRerollCost(options, false);
-    const cost2 = selectModifierPhase2.getRerollCost(options, false);
+    const cost1 = selectModifierPhase1.getRerollCost(false);
+    const cost2 = selectModifierPhase2.getRerollCost(false);
     expect(cost2).toEqual(cost1 * 2);
   });
 
diff --git a/src/ui/modifier-select-ui-handler.ts b/src/ui/modifier-select-ui-handler.ts
index f7e57b53193..0bae56c03b4 100644
--- a/src/ui/modifier-select-ui-handler.ts
+++ b/src/ui/modifier-select-ui-handler.ts
@@ -16,7 +16,7 @@ import { ShopCursorTarget } from "#app/enums/shop-cursor-target";
 import { IntegerHolder } from "./../utils";
 import Phaser from "phaser";
 
-export const SHOP_OPTIONS_ROW_LIMIT = 6;
+export const SHOP_OPTIONS_ROW_LIMIT = 7;
 
 export default class ModifierSelectUiHandler extends AwaitableUiHandler {
   private modifierContainer: Phaser.GameObjects.Container;
@@ -211,7 +211,7 @@ export default class ModifierSelectUiHandler extends AwaitableUiHandler {
       const row = m < SHOP_OPTIONS_ROW_LIMIT ? 0 : 1;
       const col = m < SHOP_OPTIONS_ROW_LIMIT ? m : m - SHOP_OPTIONS_ROW_LIMIT;
       const rowOptions = shopTypeOptions.slice(row ? SHOP_OPTIONS_ROW_LIMIT : 0, row ? undefined : SHOP_OPTIONS_ROW_LIMIT);
-      const sliceWidth = (this.scene.game.canvas.width / SHOP_OPTIONS_ROW_LIMIT) / (rowOptions.length + 2);
+      const sliceWidth = (this.scene.game.canvas.width / 6) / (rowOptions.length + 2);
       const option = new ModifierOption(this.scene, sliceWidth * (col + 1) + (sliceWidth * 0.5), ((-this.scene.game.canvas.height / 12) - (this.scene.game.canvas.height / 32) - (40 - (28 * row - 1))), shopTypeOptions[m]);
       option.setScale(0.375);
       this.scene.add.existing(option);
diff --git a/src/ui/run-info-ui-handler.ts b/src/ui/run-info-ui-handler.ts
index 39927f8e071..1976d5a997b 100644
--- a/src/ui/run-info-ui-handler.ts
+++ b/src/ui/run-info-ui-handler.ts
@@ -587,13 +587,13 @@ export default class RunInfoUiHandler extends UiHandler {
           const typeText = typeTextColor + typeShadowColor + i18next.t(`pokemonInfo:Type.${typeRule}`)! + "[/color]" + "[/shadow]";
           rules.push(typeText);
           break;
-        case Challenges.FRESH_START:
-          rules.push(i18next.t("challenges:freshStart.name"));
-          break;
         case Challenges.INVERSE_BATTLE:
-          //
           rules.push(i18next.t("challenges:inverseBattle.shortName"));
           break;
+        default:
+          const localisationKey = Challenges[this.runInfo.challenges[i].id].split("_").map((f, i) => i ? `${f[0]}${f.slice(1).toLowerCase()}` : f.toLowerCase()).join("");
+          rules.push(i18next.t(`challenges:${localisationKey}.name`));
+          break;
         }
       }
     }