Liliana, Penitant Voice

+1: Look at the top three cards of your library. Put up to one in your hand and lose life equal to its mana value. Put the rest into your graveyard.
0: You gain life equal to the total power among creatures you control and creature cards in your graveyard.
-6: Each opponent draws two cards, loses 10 life, and reveals their hand. You gain life equal to the total mana value of cards revealed this way.