The Last Dawn: The Last Archangels, Book Three (Unabridged‪)‬

With his evil brother dealt with and Daniel's Armor to assist him, Xandir sets his sights on the Prince of Darkness himself. The old Serpent, however, has joined forces with Cain to establish New Nod, a mighty empire that all mortals must submit to or perish. With the help of friends new and old, Xandir must complete a quest to forge the only chain that can bind the Prince of Darkness for good. But to do so, he must convince other immortal beings to give up their immortality to forge the links in the chain. Failure means darkness and bondage for the entire human race, but victory might finally allow Xandir to break the chains that have held him since the dawn of time.