Cresselia

Those who sleep holding Cresselia's feather are assured of joyful dreams. It is said to represent the crescent moon.

Lunar Payback: Discard an Energy from this Pokémon. If you do, switch all damage counters on this Pokémon with those on your opponent’s Active Pokémon.

Psychic (60+): This attack does 20 more damage times the amount of Energy attached to your opponent’s Active Pokémon.