Bretagard Stronghold is a uncommon Land card from Kaldheim (KHM), collector number 253. Current market price: $0.27 (foil $0.17), TCGplayer market prices via Scryfall.
This land enters tapped. {T}: Add {G}. {G}{W}{W}, {T}, Sacrifice this land: Put a +1/+1 counter on each of up to two target creatures you control. They gain vigilance and lifelink until end of turn. Activate only as a sorcery.