Kythera
A flying city of mages, capable of moving across the land and launching arcane attacks on anything below. Its people, along with Teklanna Morantine, were responsible for the attack on the Acropolis of Kereskaa.
When defending Kaarst's ban on magic to Grokko, Sable Warden Meriele Berevan described a city larger than Kaarst floating through the air on a rock larger than any mountain, it being armed with all manner of arcane ability to scorch the earth. Later, Suithrathus Luirmo describes Kythera as a flying city of mages, constructed with arcane power. Vichthart has heard of flying cities, of which there were several being used as weapons of mass destruction in the great wars. Though none are known to remain, there are occasional search parties for them.
Suithrathus visited Kythera where he saw something that impressed him and inspired him to construct his orrery in the Spire of Divination. He explains that they grew from being persuers of knowledge to persuers of power, and that he later came to realise that the Kytherans had developed a desire to acquire something that the Acropolis of Kereskaa was protecting, possibly the Dragon Orb of Drimysthonantas. It was while Suithrathus was using his divining mirror to contemplate this problem that the Kytherans attacked the Acropolis.