Swampert

Poké-BodyNatural Remedy

Once during your turn (before your attack), when you attach a Water Energy card from your hand to Swampert, remove 1 damage counter from Swampert.

Choose 1 of your opponent's Pokémon. This attack does 20 damage to that Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)