As long as Gengar is your Active Pokemon, if any of your opponent's Pokemon would be Knocked Out, put that Pokemon in the Lost Zone instead of discarding. (Discard all cards attached to that Pokemon.)
Attack 1:
[P] Hurl into Darkness
Look at your opponent's hand and choose a number of Pokémon you find there up to the number of Psychic Energy attached to Gengar. Put the Pokémon you chose in the Lost Zone.
Attack 2:
[PC] Cursed Drop
Put 4 damage counters on your opponent's Pokémon in any way you like.
