Gyarados

Rarely seen in the wild. Huge and vicious, it is capable of destroying entire cities in a rage.

Berserker Splash (80): This attack does 10 damage to each Benched Pokémon (both yours and your opponent's). (Don't apply Weakness and Resistance for Benched Pokémon.)

Aqua Tail (90+): Flip a coin for each Water Energy attached to this Pokémon. This attack does 30 more damage for each heads.