Sabrina's Haunter (G2 55)
Nightmare
20
The Defending Pokémon is now Asleep.
Shadow Attack
Flip a coin. If heads, and if your opponent has any Benched Pokémon, choose 1 of them and this attack does 30 damage to it. (Don't apply Weakness and Resistance for Benched Pokémon.)
weakness: none
resistance: -30
retreat cost: 0