Lopunnyミミロップ

Flip a coin until you get tails. Remove a number of damage counters equal to the number of heads from 1 of your Pokémon.

Does 20 damage to 1 of your opponent's Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.) You may switch Lopunny with 1 of your Benched Pokémon.