Bring the Mind's Eye to Kin'weelay at the Grom'gol Base Camp.
The Mind's Eye is held by an ogre mage, east of here and deep within the Mosh'Ogg ogre mound. His name is Mai'Zoth. I know him from when the Darkspears dwelt in Stranglethorn - he is vicious, and his magic is strong.
And if he has the Mind's Eye, then his magic will be stronger still.
You must face Mai'Zoth and wrest from him the Mind's Eye. It is a perilous task, but it is the only hope we have of saving Yenniku.