Beedrill

Flip 4 coins. If you get 1 heads, this attack does 10 damage plus 10 more damage. If you get 2 heads, this attack does 10 damage plus 20 more damage. If you get 3 heads, this attack does 10 damage plus 50 more damage. If you get 4 heads, this attack does 10 damage plus 90 more damage.