Tuskeri Firewalker is a common Creature — Human Berserker card from Kaldheim (KHM), collector number 157. Current market price: $0.10 (foil $0.14), TCGplayer market prices via Scryfall.
Boast — {1}: Exile the top card of your library. You may play that card this turn. (Activate only if this creature attacked this turn and only once each turn.)