This quest was marked obsolete by Blizzard and cannot be obtained or completed.
Take down 10 Wastewander Shadow Mages, 8 Wastewander Rogues, and 6 Wastewander Assassins for Chief Engineer Bilgewhizzle in Gadgetzan.
We need you to take on the stronger ranks of the Wastewander nomads now. You've done a good job thus far, but if we are to take back those water wells, then it only makes sense to do it against as few nomads as possible!
This time around we need you to take down their rogues, assassins, and shadow mages. You'll find them east and southeast of here.
I'm not going to lie to you - they're a nasty lot. Do this for us though, and we'll be on our way to taking back what is rightfully ours!