Yanvix, Armored Assautler

+1: Gain life equal to the number of creatures that attacked last turn.
-4: Until end of turn each card you discard gains madness X where X is the number of life you gained minus the number of life you lost this turn.
-8: Gain life equal to the the number of life you gained last turn plus Yanvix, Armored Assaulter's loyalty.