The Bane of Khosatral Khel

Description
"Shifting his reddened scimitar to his left hand, he drew the great half-blade of the Yuetshi. Khosatral Khel was towering above him, his arms lifted like mauls, but as the blade caught the sheen of the sun, the giant gave back suddenly."

- The Devil in Iron

Forged of a meteor, which flashed through the sky like a flaming arrow, this long, crescent blade is of another world. It was used to cut down and enthrall Khosatral Khel, an unearthly being of untold power, before it suddenly disappeared - and reappeared here, in the Exiled Lands.

When used, it gives unearthly strength in battle.

Source
The  can be found in Legendary Chests.

Repair
This item can be repaired with a.