+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 gain an emblem with ", 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.