I obtained 6 of 8 deathmist set pieces during vanilla wow, was at the point of killing duke of cinders on my way to obtain the last 2 pieces when BC launched....since then i have been "casually" trying to finish the set because im that stubborn. For what 4 YEARSish i held on to that quest, trying to get the duke to spawn whenever i had time to kill....Queue Cata launch....i log on to find my ancient quest has been removed from my quest log....OMFG! the anger i felt when i realized what blizzard had done to me.....ALL that time killing the lightning and earth dukes, cursing my computer, my luck, my blizzard overlords for not letting the duke of cinders spawn, farming mats for the summon, buying out the AH for extras, all for naught it would seem.....maybe if i pity party them enough they will upgrade my last 2 pieces.....i feel so robbed!

The Deathmist Raiment is the warlock 0.5 Tier that is upgradeable through a series of chain quests. In order to obtain each piece, you must meet the requirements of the quest, a certain monetary fee, and have the corresponding Dreadmist piece. For example, the easiest piece to obtain are the Deathmist bracers. You can pick up the quest from Deliana, the NPC inside the Ironforge throne room.

Note: If you look at the set before it, DreadMist, you'll notice the set bonuses are all the same, just backwards in terms of when you get it. Example, dreadmist gives +200 armor for 2 peices, this gives you the same for 8.

As of 4.0 the quest line has been removed to be able to upgrade to the Deathmist set. This news came from a GM after I opened a ticket wondering how I could complete my Dreadmist set. It was a sad day because I've been casually farming for my robes for over 9 months... I finally got them and now can't get the Deathmist set. POO!

I already had completed the starting quest "An Earnest Proposition" so I have my Deathmist Bracers, but I couldn't get the follow-up "A Supernatural Device". Mokvar has no quests. If you have the Deathmist set, hold onto it because it's now unobtainable.

Try http://www.wowwiki.com/Deathmist_Raiment for a detailed guide on how to obtain this set.

Yeah, I feel your pain. All my lock needed was his pants to get the entire set. But that &*!@#$% Rivendare wouldn't drop them. I was literally stuck on the quest of the 3rd part to turn them in. Had all the required mats in the bank to finish the entire questline, including a Signet of beckoning to guarantee the fire duke.

If you completed this set before 4.0, the helm has now regressed to its pre-upgrade color. It is no longer turquoise.

:(

I completed the questline for this on my warlock when it was a human in wotlk. I had some trouble with the Silithus part I probably didnt kill as many dukes as everyone else but it was troublesome.(Getting dreadmist to begin with probably took most farming..).

After cata release I racechanged. I discovered that the cowl looked like the regular dreadmist and was kinda sadface. At one point I racechanged again only to learn that with 4.3 Blizzard decided that instead of fixing the bug on the new warlock race/class combos they'd implement the bug so that it affects ALL races with warlock as a playable class.

So to sum up:

A bug I reported a few days after Cata release has instead of being fixed, been implemented to all races. Job well done!