Both actions use same behaviour

src/engine/mbEnums.java

@@ -1380,8 +1380,8 @@ public class mbEnums {
     }
 
     public enum PowerActionType {
-        ApplyEffect(Actions::ApplyEffect),
-        ApplyEffects(Actions::ApplyEffects),
+        ApplyEffect(Actions::ApplyEffects),  // No difference but the
+        ApplyEffects(Actions::ApplyEffects), // size of the collection
         Block(Actions::Block),
         Charm(Actions::Charm),
         ClaimMine(Actions::ClaimMine),