Clefairy

Ability — Moon-Watching Party: Once during your turn, if this Pokémon is in the Active Spot, for each of your Benched Clefairy, you may search your deck for a Psychic Energy card and attach it to that Clefairy. Then, shuffle your deck.

Wonder Storm (20×): This attack does 20 damage for each Psychic Energy attached to all of your Pokémon.