Geralf's Messenger is a rare Creature — Zombie card from The List (PLST), collector number DKA-63. Current market price: $5.37, TCGplayer market prices via Scryfall.
This creature enters tapped. When this creature enters, target opponent loses 2 life. Undying (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.)