Liliana's Indignation
Liliana's Indignation SOI
Shadows over Innistrad Uncommon 
Cost: Mana XMana B
CMC: 1
Card Type: Sorcery
Oracle Text: Put the top X cards of your library into your graveyard. Target player loses 2 life for each creature card put into your graveyard this way.
Flavor Text: "Days ago, you came to my door asking for help, Jace. Yet now here you are with accusations?"
2016-04-08 You don’t lose the game for having zero cards in your library until you’re instructed to draw a card. X can be greater than or equal to the number of cards in your library without causing you to lose the game.