At the end of Ranni’s questline in Elden Ring, the Tarnished puts a ring on her finger, becoming her consort, which rewards us with the legendary Dark Moon Greatsword. On reading this weapon’s description, you will find out how the weapon is a gift to a spouse marrying Carian Queen. As Ranni is the lunar princess belonging to the Carian Royal Family, players are bequeathed the Dark Moon Greatsword as their wedding gift.