Master Necrotech Mortenebra, an architect of Cryx's war industry, has emerged from the smoke and soot to lead her warjacks to war. Surrounded by dozens of constructs, the children of her twisted science, and accompanied by her specially--designed skarlock thrall Deryliss, Mortenebra has brought a new kind of nightmare to the mainland and spread the darkness of necrotite smoke over the kingdoms of men.