Marowak (54/147) [Aquapolis]

[2] Triple Bone
If your opponent has any Benched Pokemon, choose 1 of them and flip 3 coins. This attack does 10 damage times the number of heads to that Pokemon. Don't apply Weakness and Resistance.

[2F] Bone Rush (50x)
Flip a coin until you get tails. This attack does 50 damage times the number of heads.