Durna of Dramidor

+1: Exile the top three cards from your library face-down and put a dream counter on each of them.
0: Reveal two face-down cards with dream counters. You may cast a sorcery or enchantment from among them, ignoring its mana cost.
-7: Reveal all face-down cards with dream counters. All creatures with dream counters enter the battlefield under your control with haste.