Look at the top card of your library. You may reveal that card and put it into your hand. If you do, you lose life equal to its mana value.
-2
Create a 2/3 black Vampire creature token with flying (This creature can't be blocked except by creatures with flying or reach.) and lifelink (Damage dealt by the creature also causes its controller to gain that much life.).
-7
Sorin the Mirthless deals 13 damage to any target. You gain 13 life.