There are other objects who have reached legendary status.

Phaistos disc

The Phaistos Disc is a mysterious round tablet covered in runes. It is filled with enough khaospower to turn its holder into a god, but this power can only be unlocked if the holder can figure out how the disc works. Many scholars, nobles and mages have wasted their lives in an effort to unlock the phaistos disc. And maybe that is its purpose. A creation by a twisted god that amuses himself by watching mortals struggle in vain.