Lilith, Unburden by Death

+2: Sacrifice target creature. Create X 1/1 Black-White Spirit tokens with unblockable and shroud, where X equals the creatures toughness.
-4: Target player's creatures loses hexproof and shroud until end of turn.
-12: Return all cards you own from exile and shuffle them into your library. Opponents cannot exile spells you own for the rest of the game.