Ajani, Restored Leonin

+2: Put a +1/+1 counter on each creature you control then you gain 1 life for each creature and Planeswalker you control.
-1: Exile target nonland permanent. You gain 3 life and draw a card.
-12: Exile each creature and artefact you don't control then create X 2/2 white creature tokens where X is your life total then you gain 100 life.