Dawn War

The Dawn War was the struggle between the gods of the Serethus Sphere and the Primordials, which eventually ended with both Primordials and Gods barred from Annora and began The Fall.

The War
When the primordials found Annora due to the mana of the Infinite Spire, they first ravaged the outer planes of the sphere and slaughtered the gods who ruled them. With the gods now aware of the primordials, the Dawn War began. The gods were forced to band together and defend the multiverse from this dire threat. Hundreds of gods were slain by the immensly powerful primordials while they suffered few losses. There was little hope for the gods success, and eventually the primordials broke through to Annora. In desperate hope, the remaining gods banded together a final time at the spire, with the ravaging primordials visible in the distance. They combined the powers given to them, those of the few fallen primordials, and the spire to create the Wardens, beings forged specifically to defeat the primordials.

This final effort ultimatly failed and the gods left Annora to die on their own planes.

The Fall
Not only was Annora under final seige and being riped apart by the primordials, but the multiverse itself was collapsing on it. Life and environments from the other plans were spilling onto Annora. With the destruction of everything close at hand, the Wardens took an action the gods couldn't accept: they banished them all from Annora. The ritual created a barrier around Annora that prevented the planes from falling any further as well as keep the primordials and gods locked in various planes. Those that still existed on Annora were sealed in vaults buried in the plane and the age of The Fall began.