Liliana, the Pactless

+1: You may discard a card. If you do, create two 2/2 black Zombie creature tokens. Otherwise, each opponent discards a card.
-3: Return target creature card from a graveyard to the battlefield tapped under your control.
-6: You get an emblem with "Whenever a creature is put into a graveyard from anywhere, you may draw a card.