Gengar - 60/162 - Promo (Cosmos Holo) from Pokemon Miscellaneous Promos, available at 401 Games Canada.

• Rarity: Rare
• Finish: Holofoil
• Artist: Saya Tsuruta
• Card Text:
  [P] Sinister Fog
  Your opponent's Active Pokémon is now Poisoned. Place 1 damage counter on each of your opponent's Benched Pokémon.
  [1P] Creep Show
  If the opponent's Active Pokémon has 3 or more damage counters on it, that Pokémon is Knocked Out.