Gengar (Blue Shock 024/059)
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Psychic
Sinister Fog

Your opponent's Active Pokémon is now Poisoned Put 1 damage counter on each of your opponent's Benched Pokémon.

Psychic Colorless
Creep Show

If your opponent's Active Pokémon has 3 or more damage counters on it, that Pokémon is Knocked Out.