Proven Combatant is a common Creature — Human Warrior card from Hour of Devastation (HOU), collector number 42. Current market price: $0.02 (foil $0.20), TCGplayer market prices via Scryfall.
Eternalize {4}{U}{U} ({4}{U}{U}, Exile this card from your graveyard: Create a token that's a copy of it, except it's a 4/4 black Zombie Human Warrior with no mana cost. Eternalize only as a sorcery.)