Dawnstrike Vanguard is a uncommon Creature — Human Knight card from Edge of Eternities (EOE), collector number 10. Current market price: $0.18 (foil $0.25), TCGplayer market prices via Scryfall.
Lifelink At the beginning of your end step, if you control two or more tapped creatures, put a +1/+1 counter on each creature you control other than this creature.