Chigatta

Chigatta was a reclusive artisan, weaponsmith, and master of mystic arts in Kara-Tur.

History
Some time before the mid–14 century DR, a daimyo named Hoshi Katahiroi commissioned Chigatta to forge a weapon that could destroy the dragon, spirit and body, that was devastating his province. Chigatta created a katana, more fine than anyone could've imagined, and gave it the name of the dragon it was meant to slay, Celestial Fury.

Hoshi was victorious, slaying the dragon's body and trapping its spirit inside his sword, now a sentient weapons. To celebrate his triumph, and cement the dragon's defeat, Hoshi then asked Chigatta to craft a scabbard from the dragon's hide, ornamented with the dragon's magical pearl.

Unfortunately, the dragon's spirit possessed Hoshi and, under its control, he killed first Chigatta, and then himself. Celestial Fury continued to desire revenge on the descendants of Hoshi Katahiroi and Chigatta.