A new event in Pokémon Sleep will bring with it the debut of Cresselia, in a special two week long event, Cresselia vs ...
It’s a useful card in isolation, but also a fantastic tool if you want to activate Darkrai’s Nightmare Aura ability from the bench and build up your active pokemon so it can attack too.
Setting up Darkrai ex also damages your opponent's Pokemon without pesky consequences like triggering Druddigon's Rough Skin. Darkrai ex's Nightmare Aura deals 20 damage to your opponent's Active ...