Darkrai

Ability · Darkness Aura

If you have Cresselia in play, each of Darkrai's attack does 20 more damage to the Defending Pokémon (before applying Weakness and Resistance).

D · D · C

Flip a coin. If heads, the Defending Pokémon is now Asleep.

Weakness: Fighting · Resistance: Psychic · Retreat: 2