Shiftry ex

Poké-BodyDark Eyes

After your opponent's Pokémon uses a Poké-Power, put 2 damage counters on that Pokémon.

Choose 1 of your opponent's Pokémon. This attack does 30 damage to that Pokémon. If that Pokémon already has any damage counters on it, this attack does 50 damage instead. (Don't apply Weakness and Resistance for Benched Pokémon.)