Sharpedo ex

Before doing damage, you may switch 1 of your opponent's Benched Pokémon with the Defending Pokémon. If you do, this attack does 20 damage to the new Defending Pokémon. Your opponent chooses the Defending Pokémon to switch.

You may discard a Darkness Energy attached to Sharpedo ex. If you do, this attack does 60 damage plus 20 more damage and discard 1 Energy card attached to the Defending Pokémon.