Your tradeskill must be at least level 93 (which is when you receive the mail to start this quest).
Acquire 1 Effulgent Coal before you head to the Stonebrunt Highlands or visit the merchant in the tent to the left of him and purchase your fuel.
Use the Ulteran Spires near each location for quick porting between locations for every step that requires travel between zones.
Though it is not a quest reward, the Mara Spirit Anchor that appears in Cardin Ward in the second to last step will remain in that location, making travel to and from Mara and Obol Plains for crafting, harvesting, and adventure easy.
Ghostclaw will give you Armlet of Ethernere, which gives the user a superficial appearance of belonging in the Ethernere. It is not required that you use the illusion to continue the quest. The Armlet also has some good crafting stats, so you'll want to hang onto it.
Use the crafted device on a departing spirit in the Somborn Cemetary in Loping Plains (near ( -429, 16, 70 ) /waypoint -429, 16, 70).
Make sure you don't have ranged auto selected or wand or you will kill the spirit.