Go to the Ashenvale Nightmare Incursion and go to 89,65 to encounter the Nightmare Amalgam. You only need to enter the area with the debuff, then you can run out.
Speak to Field Captain Hannalah to pick up the quest An Amalgamation of Nightmares.
Go to Moonglade and speak to Loganaar to complete step 2 and pick up Itharius.
Go to Swamp of Sorrows and speak to Itharius to complete step 3 and pick up Going Under.
Go partway through Sunken Temple, then return to Itharius to complete step 4 and pick up Return to Moonglade.
Go to Moonglade and speak to Loganaar to complete step 5.
Speak to Shadowy Figure next to you to pick up A Fortuitous Turn of Events.
Speak again to Shadowy Figure to complete step 7 and pick up The Bad News....
Go to Booty Bay and speak to Injured Gnome to complete step 8 and pick up The Lost Vambraces.
Go to Itty Bitty Murloc at 41,86 and examine the Small Burrow next to him to complete step 9 and pick up Decharged Void-Powered Vambraces.
Go to Moonglade and speak to Shadowy Figure to pick up Waking the Nightmare.
Go back to the Ashenvale Nightmare Incursion and kill the Nightmare Amalgam, then return to Moonglade and give Mantle of Nightmares to Shadowy Figure to complete step 11 and pick up the Inert Mantle of Nightmares.

Finally, go craft your shoulders'!

Why is there never any updates/upgrades to gathering professions?

I completed this quest, and its completely useless for me.

小知識

螢幕截圖

影片

惰性夢魘披肩

	探索賽季階段 3

物品等級：50
拾取後綁定
唯一

"拿著這個物品時，你隱約可以聽到遙遠的尖叫聲。"

商人位置

此物品可購買於荊棘谷 .