Gardevoir-GX

Ability: Secret Spring — Once during your turn (before your attack), you may attach a Fairy Energy card from your hand to 1 of your Pokémon. | Infinite Force (30×): This attack does 30 damage times the amount of Energy attached to both Active Pokémon. | Twilight-GX: Shuffle 10 cards from your discard pile into your deck. (You can't use more than 1 GX attack in a game.) | Pokémon-GX rule: When your Pokémon-GX is Knocked Out, your opponent takes 2 Prize cards.