Collect 7 Mana Wraith Essences and return them to Chief Engineer Trep at Area 52 in the Netherstorm.
As the X-52's chief of engineering, I have to see to it that the nether-rocket's main engines are in tip-top shape.
Unfortunately, I haven't built them yet.
<Class>, I'm in dire straits here! I have almost all of the parts. All that I'm missing is the engine core.
Luckily for us, I think we can make use of the essence from the local mana wraiths to jump-start the engines.
They can be found near most of the glowing trenches in the northern part of the island. Except for here in Area 52, of course.