Gray Merchant of Alphabet is a uncommon Creature — Zombie Performer card from Unfinity (UNF), collector number 75. Current market price: $0.14 (foil $0.27), TCGplayer market prices via Scryfall.
When this creature enters, choose a letter. For each creature you control that has the chosen letter in its name, you gain 1 life and each opponent loses 1 life.