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Abilities, attacks, weakness & resistance
Flip a coin. If heads, this attack does 10 damage to each Benched Pokémon (including your own). (Don't apply Weakness and Resistance for Benched Pokémon.)
Other cards from Gym Challenge
Water Energy (Unlimited)
Water Energy (First Edition)
Psychic Energy (Unlimited)
Psychic Energy (First Edition)
Lightning Energy (Unlimited)
Lightning Energy (First Edition)
Grass Energy (Unlimited)
Grass Energy (First Edition)
Fire Energy (Unlimited)
Fire Energy (First Edition)
Fighting Energy (Unlimited)
Fighting Energy (First Edition)
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Koga's Koffing (gym2-79 First Edition) is a Basic Grass-type Pokémon from the Gym Challenge set illustrated by Ken Sugimori. Its Smelly Gas attack costs one Grass energy and, on a successful coin flip, deals 10 damage to each Benched Pokémon (including your own), ignoring Weakness and Resistance for Benched Pokémon. The card has a single Colorless retreat cost and a ×2 Psychic weakness which affect in-play decisions.
Catalog pricing data as of 29 Apr 2026, 08:09