Gengar (18/100) [Diamond & Pearl: Stormfront]

[P] Shadow Room - Put 3 damage counters on 1 of your opponent's Pokemon. If that Pokemon has any Poke-Powers, put 6 damage counters on that Pokemon instead.

[1P] Poltergeist (30x) Look at your opponent's hand. This attack does 30 damage times the number of Trainer, Supporter, or Stadium cards in your opponent's hand.