The twins Saeryn and Rhyas are two of Everblights most deadly warlocks, and their bond has grown such that they are far more dangerous together than apart. The very being of the twins and their athancs are now entwined. Their living vitality is shared, so that destroying one is impossible without eliminating the other. As long as one twin still draws breath, the other can endure even the most severe wounds. Injuries not shunted to warbeasts can also be shared between the sisters, each shielding the other from lasting harm.