Keepers of Night
Long ago, interaction with the Aereni line of Vol led to the dirge singer Iraala becoming the first dar vampire. She shared this gift with her lover, the warlord Muurat. In the centuries that passed, the two were placed in charge of the covert operations of the empire. Spying and assassination remained the domain of the Khesh’dar, but the Kech Nasaar served both as internal security and as commandos specializing in guerilla tactics and psychological warfare. It was the Kech Nasaar who first recognized the threat of the Kapaa’vola, and set the Keeper seclusion in motion.
Over their long seclusion, the Kech Nasaar have continued to study unconventional paths of warfare. Nasaar duur’kala often train in the techniques of the bardic College of Whispers, while elite soldiers of the Kech Nasaar might be Gloom Stalker rangers (from Xanathar’s Guide to Everything). Under the leadership of Iraala and Muurat, the Nasaar have also explored the arts of necromancy, though it’s up to the DM to decide just how far they’ve continued down this path. Do they have squads of vampire commandos? Have they developed entirely new forms of undead? Given their penchant for psychological warfare, Nasaar agents could sow terror and confusion by raising the bones of soldiers who died in the Last War, making it seem like the vengeful dead yearned to continue the battle. Or perhaps the Nasaar have developed techniques allowing them to seize control of undead raised by other necromancers—a technique that could cause untold chaos in Karrnath.
Iraala and Muurat continue to lead the clan, giving a direct tie to the ancient empire. The edict of a long-dead emperor asserted that no dead creature could wear the imperial crown; while the services of the Nasaar were valued, the dead are severed from the Uul Dhakaan and cannot draw on the wisdom of the past or see Jhazaal’s dream. The Nasaar could have fallen into true darkness in their isolation, and now seek to seize power for themselves. On the other hand, despite being cut off from the Uul Dhakaan, Iraala and Muurat remember the actual glory of the fallen empire, and could be the truest devotees of the concepts of muut and atcha, placing the needs of the empire above their personal ambitions. As in ancient times, they might seek to guide the living emperor, and to ensure the Dhakaani Empire follows the proper course.
A player character from the Kech Nasaar could follow unusual paths. A Nasaar dar might be gathering information for the clan, or they could be tasked to monitor the activities of the other Keepers, especially the Kech Ghaalrac and Kech Shaarat. Iraala may have hidden artifacts across Khorvaire before the fall; a Nasaar character could seek to recover these in her service, or could have gone rogue to pursue one of these treasures.
Source: Exploring Eberron