Hydreigon

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

Ability — Dark Aura: All Energy attached to this Pokémon are Darkness Energy instead of their usual type.

Berserker Blade (60): Does 40 damage to 2 of your opponent's Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)