Archmage Lan'dalock in Dalaran wants you to return with the Mojo Remnant of Akali. This quest may only be completed on Heroic difficulty.
The Drakkari prophets of Zul'Drak have done the unthinkable: they've slain most of their gods to absorb their powers! The most dangerous of all is the High Prophet of Akali, Gal'darah.
Sequestered within the bowels of Gundrak, Gal'darah has absorbed almost all of the mojo from slain Akali and now stands poised to erupt with his followers from the city. If we do not kill him now, we will be awash in a sea of madness and unthinkable power!
Hurry, [player], bring me what's left of Akali's mojo.