-4000 DR


 * Circa: A duergar slave revolt sees them escape from mind flayer domination.


 * Coronal Oacenth of Jhyrennstar dies of sickness.


 * Circa: The freed duergar settle beneath the Orsraun Mountains, in the northern Underdark, and in distant caverns under the Great Glacier.


 * Circa: The leShay of Sarifal forge an alliance with Imaskar after regular visits from their artificers.
 * With Oacenth's dying wish of a united empire of elves, the Elfblades and the Ruling Trials are created and Kahvoerm Irithyl draws the Rulers' Blade, uniting Jhyrennstar, Semberholme, and Elven Court into Cormanthyr.