Ob Nixilis of the Black Oath (Commander 2014) #27

[+2]: Each opponent loses 1 life. You gain life equal to the life lost this way. [-2]: Put a 5/5 black Demon creature token with flying onto the battlefield. You lose 2 life. [-8]: You get an emblem with "1B, Sacrifice a creature: You gain X life, and draw X cards, where X is the sacrificed creature's power." Ob Nixilis of the Black Oath can be your Commander.