Trueheart Duelist is a uncommon Creature — Human Warrior card from Amonkhet Promos (PAKH), collector number 35. Current market price: $0.27, TCGplayer market prices via Scryfall.
This creature can block an additional creature each combat. Embalm {2}{W} ({2}{W}, Exile this card from your graveyard: Create a token that's a copy of it, except it's a white Zombie Human Warrior with no mana cost. Embalm only as a sorcery.)