To battle a Devil means Death (1).

"Your task was simple..." Og-solath said as he bent his back and picked Cain up by his hair. Gazing into the dark pools of his eyes, Cain saw absolute serenity. He didn't even look angry, making Cain believe that the angry act was just a ploy.

However, upon looking deeper, he was able to see the ocean of madness locked away in the depths of his eyes.

Lyx, the Primordial Devil of Death ruled over death. She was the source the devils returned to when they died. Bemethshal the Primordial Devil of Chaos ruled over absolute chaos. The elements of the world bowed before him and became chaotic when exposed to his influence. Og-solath was the Primordial Devil of Madness. What exactly did he rule over? What powers and abilities did he possess? Cain would have to use his body to experience it firsthand...