Oath of Ajani

When Oath of Ajani enters the battlefield, You Gain 4 life.
Whenever a Planeswalker enters the battlefield under your control, choose one: You gain life equal to that Planeswalkers starting loyalty; Or put a +1/+1 counter on X target creatures, where X is that Planeswalkers starting loyalty.
"I will not keep watch... I will be the watch."