Jerell

"The Demiurge slew Phozpourin, and locked him in space where his body would forever burn as the sun. His host then overtook the fleeing primordial's host and slew them, too, locking them into their constellations to form the stars. Next, the Demiurge slew the great water primordial Brnnien and spread the waters of her lifeblood into the oceans on this world and beyond.
Then the Demiurge descended on the world and fought the primordials he found there. Shalor He slew with a mighty blow. Seaudyr He chained with mighty chains. Bebrea He put under a mighty curse, Slepoa He froze with a mighty wind. Quaicuin He sundered with but a word.
He then pulled their veins from their bodies and wove the Ley Lines across the world, binding them forever and declaring victory.
When the last primordial was slain, they were stuck rearranged in the firmament as a grand tapestry to describe the victories of their Lord. In the aftermath of the battle, a thousand mighty angels lay dead and crippled among a million primordial warriors. Chief among these angels were the wounded Akiri and her slain brother Mizov. The Demiurge placed the both of them as jailers of the slain primordials, she on the side of the living and he guarding from the other side, his heart bitter and his hatred savage."
~Canticles of the Demiurge, First Song Verse 32

Summary

The Jerell - War of Godly Purpose, in the Old Tongue, is the founding myth of Demiurgery. It details how the Demiurge and His hosts slew a race of godlike elementals and formed the world out of their remains.
Being powerful magical entities, 'death' is not necessarily the end of the primordials, however, and the Jerell regularly pauses to warn that they may awaken if certain conditions are right.
The five brothers in particular are monstrous entities, and the continents that bear their names are said to be either their remains or their tombs.
In addition to the apocalyptic possibility of their return, their dreams create monsters. The final stanzas of the Jerell detail their dream-children; the Karakal, the Kraken, the Tarrasque, and many others which had to be slain or enslaved by mighty heroes of old.

Spread

Even the Reverents don't argue with this part of the mythology of Demiurgery. They acknowledge that the Demiurge slew primordials and formed the known universe out of their remains.

Variations & Mutation

In some versions, the Demiurge was wounded in the battles.
In others, He directed His hosts to the attack and did not take part in the fighting personally.

In Art

The Jerell is a popular subject of art in the world, particularly paintings and stained glass depictions.

Shelor, God of Serpents