The Dragons began to see their once large domains shrinking with the arrival of Elves and Humans. However once the Dwarves began to make their way into the mountain, their pride had taken enough.
The Dragons began attacks on the earliest cities and fortresses, ending many lives, and destroying landscape. Dunatis, distraught to see his children fighting felt he could no longer interfere, his hand already playing a part in the sufferings Kamaal faced and looked to find another solution. The other Gods, however, did not wait long to choose sides. With many defending the new life, and others defending the first creation, and what they deemed the worthier one, battle lines were drawn, and mortals were to suffer.
The Humans and Dwaves and Elves banded together of this celestial banner, and began to not only hold their ground, but start to advance of the Dragons. The Gods who betrayed their brethren, The Harbingers, now as they were know, looked toward the the very thing they used to shape shape Kamaal, the Primal Elements.
The Prime Elements, Raw power, and uncontrollable, no one but Dunatis had used these. But the betrayers tapped into this source of Primal Energy, and began to change, becoming even more Chaotic and uncontrollable, wanting to see the worlds turn back into the Primal Energy it originally was. They were no longer the Gods who originally came to this plane, instead, they were The Harbingers of its destruction, and that's what they would be known as.
Asmodeus, the lord of Lies
Loth, the Demon Queen of Spiders
Kossuth, the Lord of the Eternal Flame
Umberlee, The Raging Tempest
Talos, the Deafening Storm
Tharizdun, the Devouring Quake
Bane, the Lord of Darkness
Tiamat, The Mother of Dragons,
OA, the devouring nothingness
The Harbingers were Terrible, able to imbue Dragons with Elemental powers, and they themselves being beings of Raw power. There was a large number of sentient creatures who also switched sides during this time. Seeing the gift of elemental power. Together they joined The Harbingers, and fought along side the now changed dragons. These were the first Elemental Benders.
Together they began to syphin the power of the realm, and the energy they themselves held, to create something new, something so destructive, nothing but dark nothingness would be left in its place. They created a thing know only as OA.
It seemed all was lost, when Dunatis found his answer. Using his power, the one he originally used to harness the Primal Energy to create Kamaal, he sacrificed himself, a choice of forever sleeping, turning his power and energy into a Dream, a Prison that the Harbingers and its new weapon could not be freed from, as long as Dunatis continues to sleep.
With the Betrayers gone, the remaining Gods and forces of good were able to push back, and Kill many of the remaining dragons. Some believe these ancient Elemental Dragons still live.