Seadra

Ability: Nock the Arrow

Once during your turn, you discard an Energy card from your hand. If you do, attach any number of W Energy from your discard pile to this Pokemon. Then your turn ends.

Water Arrow

Discard all W Energy attached to this Pokemon. Deal 10 damage to one of your opponents Pokemon for each Energy discared this way. (Don't apply Weakness and Resistance for Benched Pokémon.)