The Kamal also tried to invade Tamriel at one point, and managed to sack the city of Windhelm, ostensibly in search of some artifact called the 'Ordained Receptacle.' It may be the case that the entire invasion was launched for the purposes of finding this artifact, a theory backed up by the fact that the invading forced bypassed the entire region of Morrowind and made a beeline for Skyrim, sailing down the Whtie River. After the death of the latter, a period of interregnum was established, only ending with the rise of Tiber Septim. Unfortunately, the Dragonguard proved to be ineffective - Versidue-Shaie and his successor, Savirien-Chorak, were both assassinated. This Potentate, Versidue-Shaie, was a Tsaesci who took the reins of the empire, starting the short-lived Akavirit Potentate period of rule, declaring martial law, establishing the guilds that we know today, and turning the Dragonguard into a spy network designed to protect the Potentate. It was one of these Potentates who assassinated the last Reman emperor, Reman III. The Reman emperors would employ individuals from Akavir to be their most trusted advisors, and these became known as Potentates.