Edge of Destiny

The Edge of Destiny is a Scimitar made of sky metal by a weaponsmith of the Bloody Chalice.   It is distiinguished by its bright blue curved edge.  It was originally created to be enchanted as the sword of the caliph of caliphs, thereby completing a prophesy of the Desert of Brass.  The ritual to enchant the sword was interrupted before it could completed, and the
sword taken as spoils of the battle that interupted the ritual.