Charging Cinderhorn is a rare Creature — Elemental Ox card from Commander 2016 (C16), collector number 16. Current market price: $0.46, TCGplayer market prices via Scryfall.
Haste At the beginning of each player's end step, if no creatures attacked this turn, put a fury counter on this creature. Then this creature deals damage equal to the number of fury counters on it to that player.