Kel'Jaed had awoken at the final passing of the godly powers over Anthelos, after, it was said, Angstrom lost his mind. He had awoken because at last the godly seal holding him had shattered.
Emerging from the abyss, with no lord of the dead to stop him, he raised an army of the damned to wreak hell upon the world for him. For many years he ravaged Anthelos, seeking to become a god in all but flesh. After fifteen years, however, when several of the new gods had fallen, (Either to the hand of Kel'Jaed, or Ambrosiac Overload* none could say) Angstrom put his foot in. He was tired of seeing so much bloodshed, tired of seeing his world gone as mad as he.
Perhaps Angstrom was still sane when he did this, and returned to his insanity afterwards. But, overcoming the reason why he held back before**, with a mighty blow he smote Kel'Jaed on the spot and cast his armor into the depths of hell. Kel'Jaed was the first in the line of Necromancer lords to come.

*( Ambrosiac overload was the reason why some of the gods expired, both before and after the Thorn war. It was caused simply because of a mental state that did not fully allow the willpower of the user to remain intact, and through constant use, overloaded their bodies and fried them. Kel'Jaed used this technique extensively during the Thorn war, so it is impossible to tell how the new divines died- whether from Overload or Kel'Jaed.)

** (Angstrom and the other old gods were immensely powerful. So much so, in fact that they had to rein in the greater part of their powers to keep Anthelos safe. This was done so often it became second nature, and, aside from a few slip ups, was kept. Each god kept within their own parameters of power, but that did not stop them from combining the power to achieve greater effect. They did so to bind Kel'Jaed to avoid any mishaps with power overload.)