Malykriss: The Vile Hold is a Scourge necropolis under construction in Icecrown. Malykriss is being constructed entirely of saronite, the ore used to construct Icecrown Citadel and its defenses throughout Icecrown. When completed, this necropolis would be all but indestructible. It appears to be intended as the replacement for Acherus: The Ebon Hold, now held by the renegade Knights of the Ebon Blade. In the quarry below the Host of Suffering trains new death knights under the leadership of Orbaz Bloodbane.
The Knights of the Ebon Blade have requested players to scout out Malykriss and determine what they were up against before making a plan of attack against its death knight leaders, to sway more Scourge death knights into the Ebon Blade.