Dark Whispers

Turn this in to Calydus in the Dalaran Underbelly, same spot where you started the quest chain.

Video Guide: https://www.youtube.com/watch?v=66LUstTUBNQ

1. Dark Whispers (Scenario)
• Accept the quest, Dark Whispers, from [npc=106610] at coords 54.0, 47.3 (Violet Gate in [zone=7502]).
• [npc=106610] will create [object=249813] in the center of the room. Click on it, to go through.

Stage 1 - Searching the Hold
• After arriving at Felsoul Hold, in [zone=7767], travel down the path, southeast to 27.1, 63.5, killing any demons you cross such as [npc=106658], [npc=106660] and [npc=106657].
• Defeat the 3 [npc=106698] who are presently casting a channeling spell at [npc=106693].
• After all 3 [npc=106698] are dead, [npc=106692] will come through a nearby portal and call a [npc=106644] to fight you.

Stage 2 - Getting Over the Overfiend
• Defeat the [npc=106644].

Stage 3 - Demon Hunting
• After killing the [npc=106644], travel northeast to 28.6, 62.1.
• At the end of the bridge, you will come to a burned patch on the ground. Use your [spell=111771] spell, and click on the [npc=59271] to transport yourself to the other side.

Stage 4 - The Legion
• Listen to [npc=106811] before he calls for 3 waves of demons to come, through a portal, from the northeast. Defeat the demon waves:
• [npc=106646] - When [spell=170068] is being cast, make sure you aren't in the direction it is facing.
• [npc=106687] - When [spell=217809] is starting to be cast, move from the area you are presently located.
• • Move out of the area of the [spell=206564].
• [npc=106657] - After the three waves have been defeated, you will face off against the waves' leaders:
• [npc=106825] - When [spell=217809] is starting to be cast, move from the area you are presently located.
- - Move out of the area of the [spell=206564].
• [npc=106827] - Focus on defeating [npc=106825] first, as she is more of a threat with her [spell=217809].

Stage 5 - Screams of the Skull
• Travel southeast to the area of 31, 66, defeating demons along the way, such as [npc=106647] and [npc=106958].
• Make sure that you are more than 10 yards from it, when it begins channeling [spell=205259].
• Defeat [npc=106652].

Stage 6 - The Skull of the Man'ari
• Click on the [object=249821] at 31.1, 65.8 to claim your artifact weapon.

Stage 7 - There's a New Master in Town (Final Stage)
• Click the [npc=106846] to get back to [zone=7502].
• Enter the [zone=7502] sewers/underbelly at 59.9, 47.7, and follow the tunnel to 64.7, 58.8, where you will enter a tunnel, on the left, to reach the Circle of Wills.
• Turn in the quest to [npc=101097].
- - If you have already completed a different artifact chain, [npc=101097] will be located at 36.6, 30.4 in the Dreadscar Rift.

I ran into a problem wherein the scenario bugged, & I couldn't complete it - I beat Mephistroth but I could not loot the skull.
I realized I'd completed the objectives out of order, basically; I beat him BEFORE I beat the mobs from Stage 4, not realizing I was essentially skipping a step. After killing the stage 4 mobs, the subsequent barrage of demons on the path to Meph's prior location, scouring the area, looking for him or the skull (& coming to this page, to get hints & see if anyone else had this problem, & had documented it) I ended up hearthing back to Dalaran. The good news was, I was able to go back through Caldus' portal, because he was still in the same room. However, it reset the whole scenario when I went through the 2nd time. I completed the stages, in the correct order, on round 2 & successfully looted the skull, the second time around.

I figured I should make this note, for anyone else who may encounter this bug, so they don't go through the annoyance & chagrin I did.
(As this was my 3rd weapon quest, I completed it back in Dreadscar.)