Liliana, Vraska's Advisor

+2: Target opponent may discard a card. If he or she doesn't, you create a 2/2 black Zombie creature token and gain 1 life.
0: Each player sacrifices a creature, discards a card and loses 3 life.
-8: For each creature card in your all graveyards create a 2/2 black Zombie creature token. Target player loses half that many life rounded up.