Empoleon.

Choose 2 of your opponent's Pokémon. This attack does 30 damage to each of them. (Don't apply Weakness and Resistance for Benched Pokémon.)

Does 50 damage plus 10 more damage for each of your Benched Pokémon. Flip a coin. If tails, this attack does 10 damage to each of your Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)