Steadfast Sentinel is a common Creature — Human Cleric card from Hour of Devastation (HOU), collector number 24. Current market price: $0.08 (foil $0.16), TCGplayer market prices via Scryfall.
Vigilance Eternalize {4}{W}{W} ({4}{W}{W}, Exile this card from your graveyard: Create a token that's a copy of it, except it's a 4/4 black Zombie Human Cleric with no mana cost. Eternalize only as a sorcery.)