Strength of the pride

+1: You gain life equal to the number of creatures you control plus the number of planeswalkers you control.
-2: Create a 2/2 white Cat Soldier creature token named Ajani's Pridemate with "When you gain life put a +1/+1 counter on Ajani's Pridemate"
0: If you have at least 15 life more than your starting life total, exile Ajani, Strength of the Pride and each artifact and creature your opponents