Dream Eater

When Dream Eater enters the battlefield, target opponent gains control of it.
Creatures you control get -1/-0.
Dark Pact {2}{u}{u} (Exile this card from your
graveyard: Create a token that's a copy of it, except
it's an Enchantment with no mana cost, power, or toughness. Dark Pact only as a sorcery.)