Gyarados-EXギャラドスEXUnlimited Holofoil

Flip a coin until you get tails. For each tails, search your deck for a Water Energy card and attach it to this Pokémon. Shuffle your deck afterward.

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