Liliana, Lurker's Majesty

+1: Create a 3/1 blue and black zombie merfolk creature token with menace. You may activate this ability at any time you could cast an instant.
0: You may discard a card. If you do, scry 2, then draw a card.
-4: You get an emblem with: "Whenever you cast a spell during an opponent's turn, create a 2/2 black zombie creature token."