Brock's Geodude (G1 38)
POKEMON — [Basic, Owners_pokemon]
Choose 1 of your opponent's Benched Pokémon and flip a coin. If heads, this attack does 30 damage to that Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.) This attack can't be used if your opponent has no Benched Pokémon.