Aberrus, the Shadowed Crucible

“Millennia ago, Neltharion established Aberrus, a secret laboratory where he conducted world altering experiments. Recently rediscovered, Aberrus is now under attack from all sides as forces seeking to claim the Earth-Warder's legacy search for any power that remains. The champions of Azeroth must venture into the shadows and ensure Neltharion's dark power doesn't fall into the wrong hands.”