Hydreigon

The heads on their arms do not have brains. They use all three heads to consume and destroy everything.

Ability — Weed Out: Once during your turn (before your attack), you may choose 3 of your Benched Pokémon. Then, discard your other Benched Pokémon.

Dark Destruction (120): You may discard an Energy from this Pokémon. If you do, discard an Energy from your opponent’s Active Pokémon.