The Ancient Meteoric Ore Greatsword is one of the new legendary weapons added in Elden Ring: Shadow of the Erdtree DLC. You can claim this massive greatsword by interacting with the altar at the end of the Ruined Forge of Starfall Past dungeon in Scadu Altas. The Ancient Meteoric Ore Greatsword is an odd but strong weapon because of its Strength-Arcane scaling while offering Physical and Magic damage with no status buildup.