Sacing Synergy

Enchant creature At the beginning of your upkeep, create a token that's a copy of enchanted creature.

When this creature enters, it deals damage equal to its power to any target. 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, trample At the beginning of your upkeep, sacrifice a non-Zombie creature, then create a 2/2 black Zombie creature token.