Geralf's Messenger is a rare Creature — Zombie card from Dark Ascension (DKA), collector number 63. Current market price: $2.37 (foil $15.14), 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.)