Greymond, Avacyn's Stalwart is a mythic Legendary Creature — Human Soldier card from Secret Lair Drop (SLD), collector number 143. Current market price: — (foil $50.66), TCGplayer market prices via Scryfall.
As Greymond, Avacyn's Stalwart enters, choose two abilities from among first strike, vigilance, and lifelink. Humans you control have each of the chosen abilities. As long as you control four or more Humans, Humans you control get +2/+2.