Trueheart Duelist is a uncommon Creature — Human Warrior card from Magic Online Promos (PRM), collector number 64424.
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.)