Desire Demon

Flash
Possession {1}{u}{u} (If you cast this card for its Possession cost, it's an Aura enchantment with enchant creature. It returns to your hand if it's not attached to a creature.)
Enchanted creature has hexproof and "when this creature attacks, target player mills three cards. Then exile target permanent card from any graveyard. You may cast that card this turn and you may spend mana as though it were mana of