Legacy of the Forlorn
The Sundering of Sovyrian was a catastrophe in which Golarion’s connection to Sovryian was closed off, due to the complex machinations of the dark elves. This led to a major disruption of elven immortality and a severe weakening of their magical powers.
Thanks to ancient magical contracts forged any tens of thousands of years ago, those elder elves that would have died from the loss of their immortality were instead pulled back to Sovryian, where they were protected and sustained. Nevertheless, this meant that the nation of Kyonin was abruptly robbed of many of its oldest and most powerful residents, leaving the elven nation perilously vulnerable.