Pretty much straight forward; head straight up north and keel sum' Dragonflayers!
Be sure to pick up this quest, The Enemy's Legacy at the same time, as they're both located within Nifflevar. The coords for the sagas can be found in the comments of the linked quest.
Quest
Against Nifflevar
A World of Warcraft quest in Howling Fjord. Facts and objectives from the current retail game data.
The highest voted Wowhead comments for this page. They are community notes, not TheWoWDB comments.
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(12482))
Description
We await reinforcements from Vengeance Landing to move against Nifflevar. If we were to capture it earlier, though, it would provide us with a great advantage over the Alliance. Head into town and see if you can put a dent in their numbers.
Community notes from Wowhead · 4 comments
Top 1 shown above · 2 more hereThe comments below were written by Wowhead users. They are community notes, not TheWoWDB comments. See them in context on Wowhead.
Requirements for this quest should be adjusted, as I picked it up at 69, though the companion quest The Enemy's Legacy does require level 70.
As of this posting I was able to pick up this quest at 68.
Reward details
Reputation: The Hand of Vengeance +250
The Forsaken tasked by Sylvanas Windrunner with enacting Undercity's vengeance against Arthas by delivering the latest strain of their deadly Plague.
Reputation group: Horde Expedition.
Other quests in Howling Fjord that reward The Hand of Vengeance reputation: Test at Sea (+250), Reports from the Field (+150), Let Them Eat Crow (+250), Guide Our Sights (+250), Landing the Killing Blow (+350), Report to Anselm (+75).
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.