diff --git a/src/modifier/modifier.ts b/src/modifier/modifier.ts
index 3418da5b8ea..e01f95e3f08 100644
--- a/src/modifier/modifier.ts
+++ b/src/modifier/modifier.ts
@@ -1995,7 +1995,7 @@ export class ResetNegativeStatStageModifier extends PokemonHeldItemModifier {
   }
 }
 
-export abstract class FieldEffectModifier extends PokemonHeldItemModifier {
+export class FieldEffectModifier extends PokemonHeldItemModifier {
   constructor(type: ModifierType, pokemonId: number, stackCount?: number) {
     super(type, pokemonId, stackCount);
   }
@@ -2005,6 +2005,14 @@ export abstract class FieldEffectModifier extends PokemonHeldItemModifier {
     return true;
   }
 
+  override matchType(modifier: Modifier): boolean {
+    return modifier instanceof FieldEffectModifier;
+  }
+
+  override clone(): FieldEffectModifier {
+    return new FieldEffectModifier(this.type, this.pokemonId, this.stackCount);
+  }
+
   override getMaxHeldItemCount(_pokemon?: Pokemon): number {
     return 2;
   }