Gengar

Hiding in people's shadows at night, it absorbs their heat. The chill it causes makes the victims shake.

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

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