Kinda inspired by Knarf milling

Whenever another creature enters, you gain 1 life.

Sacrifice a creature: Target player mills cards equal to the sacrificed creature's power.

Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

Flying Lifelink (Damage dealt by this creature also causes you to gain that much life.) Whenever you gain life, put a +1/+1 counter on each creature you control.