Figured I would post this after finding this last night. Went from Neutral to Honored in 2 hours.
You need to mind control a specific type (location given in video towards the end) of Vor'thik Vor'thik Dreadsworn that has Flurry (frontal cone % damage aoe with no max targets or diminishing returns)
This is probably only going to work with a tank, since you have to tank the mobs in place for at least 30 seconds and keep yourself alive. Might work with evasion, but the mobs need to be standing still to die from the aoe
Oh, the mind control ability comes after a quest chain of one of the bug heroes (forgot the name)
Enjoy