Lumineon

Once during your turn (before your attack), if Lumineon is your Active Pokémon, you may choose 1 of your opponent's Benched Pokémon that has maximum HP of 100 or more and switch it with 1 of the Defending Pokémon. This power can't be used if Lumineon is affected by a Special Condition.

Does 30 damage plus 10 more damage for each Water Energy attached to Lumineon. Then, return all Water Energy attached to Lumineon to your hand.