Olluknight, Zombie Knight

: Whenever a Zombie dies, you may pay 1. If you do, you may gain life equal to that creature's toughness.
+1: Until end of Turn, Olluknight becomes a 3/5 Zombie creature with indestructible.
-X: Sacrifice target zombie you control with toughness X or less. Create 2 copies of the sacrificed zombie, they are no longer legendary.