WANTED: Malicious Instructors

Objectives
Nether-Stalker Mah'duun has asked you to slay 3 Malicious Instructors. Return to him in Shattrath's Lower City once they all lie dead in order to collect the bounty.
 * Malicious Instructor slain (3)

Description
Mah'duun has heard it said that none are as cruel as the six-armed demonesses inside the Shadow Labyrinth.

Go to Auchindoun, seek them out, kill them all.

If you cannot accomplish so simple a task, we do not have anything further to say to one another.

Progress
The instructors, they are all dead? No?

Did I not say not to return unless you had killed them all?

Completion
I am satisfied. He who speaks through the nether shall be as well. Mah'duun has your bounty prepared.

Return again tomorrow and the winds will have whispered once more to Mah'deen [sic].

Reward
You will receive: +  at 70
 * Ethereum Prison Key

Gains
Upon completion of this quest you will gain:


 * 250 reputation with Lower City
 * 250 reputation with The Consortium