Whiscash

It makes its nest at the bottom of swamps. It will eat anything—if it is alive, Whiscash will eat it.

Ability — Submerge: As long as this Pokémon is on your Bench, prevent all damage done to this Pokémon by attacks (both yours and your opponent's).

Earthquake (140): This attack also does 20 damage to each of your Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)