Dreadhorde Butcher is a rare Creature — Zombie Warrior card from War of the Spark Promos (PWAR), collector number 194p. Current market price: $1.17 (foil $1.99), TCGplayer market prices via Scryfall.
Haste Whenever this creature deals combat damage to a player or planeswalker, put a +1/+1 counter on this creature. When this creature dies, it deals damage equal to its power to any target.