If you haven't read the quest description... this quest is only available to miners, herbalists and skinners.
Quest
Gaining the Advantage
A World of Warcraft quest in Shattrath City. Facts and objectives from the current retail game data.
The highest voted Wowhead comments for this page. They are community notes, not TheWoWDB comments.
For miners, I would suggest simply mining fel iron nodes in Hellfire after you finish up with the dailies on Kil'jaeden's throne. I say this because not only are they extremely easy to find (not to mention largely ignored) but appear to have the same drop rate as adamantium ore, which unless you're actively searching it out for money it causes the quest to go by much slower due to its high demand.
PS, you can get these on the Isle of Quel'danas also, despite it saying Outland only...primarily because they have Outland ore there. Got mine from just doing the Shattered Sun dailies, didn't need to take a single detour.
I just gained 4 Nether Residue off 1 Rich Adamantite.
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(11875))
Requirements
Read from the Blizzard quest API.
Description
The troops of the Shattered Sun Offensive will need every advantage they can get to beat back the allies of Kil'Jaeden. My colleagues in Stormwind have created oils which will strengthen the blades and armor of our troops. The key ingredient, nether residue, pervades Outland -- if you know where to look. Any master herbalist, skinner, or miner who knows the signs can gather it while plying his trade. Those herbs, ores, and beasts native to Outland may all bear the residue.
Community notes from Wowhead · 150 comments
Top 3 shown aboveThe comments below were written by Wowhead users. They are community notes, not TheWoWDB comments. See them in context on Wowhead.
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Reward details
Items you receive
Reputation: Shattered Sun Offensive +250
Shattrath City's final push against Prince Kael'thas' operations in the Sunwell.
Reputation group: Shattrath City.
Other quests in Shattrath City that reward Shattered Sun Offensive reputation: Report to Nasuun (+10).
Item facts are the current retail client’s (ItemSparse); the specialisations for a pick-one item are the ones the Blizzard quest API lists; faction and currency text is the client’s own. Lowest listed price = the US commodity auction house now.
Where this quest fits
Other daily quests in Shattrath City
Steps, storylines and map placement from the client’s QuestLine, prerequisite and QuestPOI data; neighbouring quest text is Blizzard’s own (quest API), shortened to its opening sentences.