Gastrodon

It has strong regenerative capabilities. Even if parts of it are bitten off by fish Pokémon, it will return to normal within a few hours.

Eerie Fluid (30): Your opponent’s Active Pokémon is now Confused.

Earthquake (120): This attack does 10 damage to each of your Benched Pokémon. (Don’t apply Weakness and Resistance for Benched Pokémon.)