The Folly of Udo

A bit of the MASSIVE quantity of flavor text from Planescape: Torment (1999)

> The painting 'The Folly of Udo.' > > A dark cityscape, a far-away view of some giant center of civilization being burned to the ground. The streets of the place were empty, however, absent of soldiers, refugees, and even corpses. > > Yvana's commentary: "This painting illustrates one of the legends of the Prime world Goha. Udo was a wizard-king of such skill and power that he set to casting a spell that would turn himself into a Power, and the people of his great nation into divine servants. With the spell's completion, lightning crashed down around Udo's palace setting it ablaze and, before the thunder had died away, the city was empty... not a living thing to be found. Over seventy-thousand people vanished, without a trace, in a heart-beat. No one knows the fate of Udo or his people."

I'm playing P:T EE for the first time and came across this very familiar story. So am I imagining it or is it possible this inspired the story of Kagrenac and the Dwemer? Did both stories come from a common ancestor? Am I going crazy reading the hundreds of paragraph sized scifi/fantasy stories in this game?

^ e: the folly of /u/poompt