Lioni, Strength and Pride

+1: You gain life equal to the number of Creatures and Planeswalkers you control.
-2: Create a 1/2 Lionio's Primate Creature token with "Whenever you gain life, target Creature gets a +1/+1 coutner."
0: If you have at least 15 more life than your starting life total, exile Lioni, Strength and Pride, & each Creature and Artifact opponents control.