A figure so horrifying even the otherwise implacable Necrons fear it, Nekrosor Ammentar is a locus for a murderous psychosis that enraptures Necrons. Over many centuries its form has become more and more tailored to destroying organic life, forcing Crypteks to outfit it with bladed limbs, a serpentine tail, enmitic projectors that allow it to tunnel through battlefields, and the devastating unmaker gauntlet. Despite its twisted form, Nekrosor Ammentar retains a fierce intelligence and has amassed a huge following, many inflicted with the Destroyer curse, others allying themselves with the terror for their own purposes. Its true motives unknown, Nekrosor Ammentar is now invading the region of space known by the Imperium as Ultramar.