Fall of the Gods
The city of Cassius, named after the great warrior Cassius, has not had the best luck through the ages. Every few hundred years something seems to happen that causes a large portion of the city to be destroyed. This often leads to a dramatic regime change, resulting in a varied history of rules and beliefs through the ages.
Currently the city is under a moderate rule that seems to suit it well. It is also the religious center of the world, being home to a great many scholars of the mundane, divine, and arcane varieties.