You can get this quest on immediately after killing fel reaver, you do not need to get it after killing gorefiend. Just go back to khadgar at the beginning of the instance and save yourself a week.
Quest
Well of Souls
A World of Warcraft quest in Hellfire Citadel. Facts and objectives from the current retail game data.
The highest voted Wowhead comments for this page. They are community notes, not TheWoWDB comments.
One [item=128418] is collected automatically collected each time you kill Gorefiend on a given difficulty. It is not a physical item in your bags; instead they are added directly to your Quest Log. You need four Gorefiend kills on mythic difficulty to earn the ability to teleport to the upper floors on mythic.
You can only loot this item once per week per difficulty.
This quest allows players with gear levels at or above the ilvl of the lower floor bosses to skip those bosses completely and help with progression through the raid.
If the raid leader has completed this quest, it allows the entire raid to skip to the next section.
I just found out that quests from a higher difficulty also award portals for lower difficulties. I finished this quest on mythic, still working on normal/hc, but a portal popped on normal already.
Quest facts
The client quest POI data records no map location for this quest, so no map is shown.
Check whether you have already completed this quest
in-game: /run print(C_QuestLog.IsQuestFlaggedCompleted(39501))
Description
As you defeat Gul'dan's minions, his hold over this fel citadel weakens, allowing me to teleport you and your allies deeper into the dark halls. If I only I had some Soul Remnants - four of them, let's say - none of this would be necessary, and I could harness that power to send you directly into the upper reaches of the Citadel.
Getting there
Inside the raid: Hellfire Citadel
When Garrosh encouraged Grommash to begin construction of this massive stronghold at the heart of Tanaan Jungle, to serve as a staging ground for the assault of Azeroth, he even suggested the name Hellfire, pulled from a different time and a different land.
Bosses in the Adventure Guide, in order: Hellfire Assault, Iron Reaver, Kormrok, Hellfire High Council, Kilrogg Deadeye, Gorefiend, Shadow-Lord Iskar, Socrethar the Eternal, Fel Lord Zakuun, Xhul'horac, Tyrant Velhari, Mannoroth.
Instance text, bosses and entrances are the client’s Adventure Guide data.
Community notes from Wowhead · 13 comments
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Spell: Soul ConduitAttunes the target with soul energy, allowing Khadgar to offer direct teleportation to the upper levels of Hellfire Citadel on any difficulty.