This quest was marked obsolete by Blizzard and cannot be obtained or completed.
To forge the Legplates of the Chromatic Defier, you will be required to bring the following items to Jeziba the 'Sculptor':
The carapace of a mature chromatic drake is needed to form the foundation of the leggings. Brilliant chromatic scales are then layered upon the wire frame and enchanted in the blood of heroes. Finally, the supple skin of shadow must be applied to the inner greaves.