Axgard Armory is a uncommon Land card from Kaldheim (KHM), collector number 250. Current market price: $0.40 (foil $0.63), TCGplayer market prices via Scryfall.
This land enters tapped. {T}: Add {W}. {1}{R}{R}{W}, {T}, Sacrifice this land: Search your library for an Aura card and/or an Equipment card, reveal them, put them into your hand, then shuffle.