Shepherd of the Unloved

Pact - Pay 4 life (When this creature enters the battlefield or at the beginning of your upkeep, you may
pay 4 life to form a pact with it until you form another
pact.)
Flying, lifelink
If you would gain life while you have a pact with Shepherd of the Unloved, instead put that many
+1/+1 counters on Shepherd of the Unloved.