Elise, Dice Conjurer

+1: Roll a 20-sided die. If you roll a natural 20, exile target creature an opponent controls. If you roll a 1, sacrifice Elise, the Dice Conjurer.
-4: Roll a eight-sided die. Gain life equal the number you rolled.
-10: Roll a six-sided die. If you roll a 6, you win the game. If you roll a 1, you lose the game.