Great Encounters set of Diamond & Pearl series

Darkrai
Basic
HP80
Evolves From:
Pokédex No.491
Darkness Roar
You may have your opponent switch the Defending Pokémon with 1 or his or her Benched Pokémon.
Sleep Hole
If the Defending Pokémon is Asleep, this attack does 40 damage plus 40 more damage. If the Defending Pokémon is not Asleep, that Pokémon is now Asleep.