The Crimson Age was marked by yet another betrayal and war amongst the Sorceror-Kings. During this period, the Sorcerer-Kings expanded their influences and became increasingly competitive with one another. Borys was the most powerful of these, his power in a draconic form rivaled that of the imprisoned Rajaat whose prison he watched over. In their ambition, the Sorcerer-Kings grew crueler and crueler, each ruling their city without regard for those that lived in it, treating them as the winds of the desert did. But most of all they grew frustrated with Borys, his power, and his increasing demands for tribute. So, the remaining 12 banded together and fought against Borys, killing him. The battle sunk the city of Ur-Draxa, the most magnificent on Athas, into the lava lake in the Valley of Fire and Dust. Though the protector of Rajaat's tomb was defeated, enough older sorcerer-King died that the remaining young ones did not see reason in replacing Borys' positions. Of the 7 that survived, they made a pact to prevent any of the others from utilizing draconic ascension. The sun darkened further as a result, taking on a reddish-brown hue and beginning the current age, The Umber Age.