Blaine's Tauros (G1 64)
3-Pronged Tail
10x
Flip 3 coins. This attack does 10 damage times the number of heads.
Full Speed Charge
20x
Flip 4 coins. This attack does 20 damage times the number of heads to the Defending Pokémon and 20 damage times the number of tails to Blaine's Tauros.