diff --git a/src/battle-phases.ts b/src/battle-phases.ts
index 73f844668..59d5979ac 100644
--- a/src/battle-phases.ts
+++ b/src/battle-phases.ts
@@ -635,7 +635,7 @@ export class SummonPhase extends PartyMemberPokemonPhase {
             this.scene.field.add(pokemon);
             if (!this.player) {
               const playerPokemon = this.scene.getPlayerPokemon() as Pokemon;
-              if (playerPokemon.visible)
+              if (playerPokemon?.visible)
                 this.scene.field.moveBelow(pokemon, playerPokemon);
               this.scene.currentBattle.seenEnemyPartyMemberIds.add(pokemon.id);
               this.scene.updateModifiers(false);
diff --git a/src/modifier/modifier-type.ts b/src/modifier/modifier-type.ts
index 76b636194..017fd90a7 100644
--- a/src/modifier/modifier-type.ts
+++ b/src/modifier/modifier-type.ts
@@ -813,8 +813,8 @@ export function regenerateModifierPoolThresholds(party: Pokemon[], poolType: Mod
     let i = 0;
     pool[t].reduce((total: integer, modifierType: WeightedModifierType) => {
       const weightedModifierType = modifierType as WeightedModifierType;
-      const existingModifier = party[0].scene.findModifier(m => (m.type.generatorId || m.type.id) === weightedModifierType.modifierType.id);
-      const weight = !existingModifier || existingModifier.stackCount < existingModifier.getMaxStackCount()
+      const existingModifiers = party[0].scene.findModifiers(m => (m.type.generatorId || m.type.id) === weightedModifierType.modifierType.id, player);
+      const weight = !existingModifiers.length || existingModifiers.filter(m => m.stackCount < m.getMaxStackCount())
         ? weightedModifierType.weight instanceof Function
           ? (weightedModifierType.weight as Function)(party)
           : weightedModifierType.weight as integer