Their original purpose is unclear, but a questline with Exarch Orelis in the Inn at Area 52 reveals that Kael constructed the Manaforges using technology taken from Tempest Keep. Thus, they appear to be of Naaru design, but only because the core technology is. Perhaps they used physical materials from Tempest Keep, or perhaps Naaru design is so integral that to use the technology necessitates using the very same physical forms, materials, and sigils. Four manaforges are operating in the Netherstorm, under the control of blood elves loyal to Kael'thas Sunstrider. They are: * Manaforge Ultris