Upon capturing Kerebus Maverlin, we found a sword in his possession that could not be unsheathed. It was clearly imbued with powerful magic. Upon further examination I determined that it was the Sword of Kings, which has belonged to the nobility of Turos for generations. It is a finely crafted elven sword that is so ancient it predates the schism between the Ishari and the Elisani. Its power has been diminished, but I was able to determine that it could be unsheathed and spoken to by Kael if I performed a ritual to facilitate the conversation.
The ritual naturally went as I planned, and Kael was able to communicate with the weapon. It called itself Dominion and claimed to belong to the Crimson Emperor. According to the sword its power had been divided and fragments infused into other weapons the Emperor gifted to his generals. Dominion claimed to be the WILL of the original artifact. We have not yet determined who currently possesses each of the other swords.
One piece of information I was able to glean is that the sword cannot be kept away from its master. If the Crimson Emperor decides to pursue it, we will not be able to conceal its presence. For the time being we must keep it in our possession simply because there is no safe place to leave it.
The most concerning aspect of this discovery, is that in order to split the power of such an ancient artifact the Emperor must be wielding power the likes of which has not been seen since the War of Heaven. This does not bode well.