T'chali the Witch Doctor has asked you to kill his chief tormentors, Grimnok Battleborn and Korgaah. After you have done so, return to him at Bloodmaul Ravine in the Blade's Edge Mountains.
T'chali has been waiting for his revenge!
The day they bury T'chali and leave him to die, it was Grimnok Battleborn that led them. And the next day it was Korgaah that come south to raid and kick T'chali in the head.
I want them dead!
You will find Grimnok atop the Southmaul Tower in Bloodmaul Outpost. You will find Korgaah in the top of a building at the north end of Bladespire Hold. Korgaah has sober defenders, so use the brew to distract him away from them, because they won't drink.