Kamarel and the Plane of Mirrors

Okay, straight from the 'Tales from the Infinite Staircase' adventure involving Kamerels:

So, the Kamerel were the exemplars of pure neutrality before the Rilmani came on the scene. Unlike the future Rilmani, however, the Kamerel exemplified the dispassionate sort of neutrality that makes folk xenophobic removed hermits. Therefore, they were quite content to live their happy withdrawn little lives, ruling an empire whose power rivaled that of the Rilmani and ignoring any evidence that they were not the only creatures in existence. Since they lived near (although not directly on) the base of the Spire, their use of magic was limited to first level spells, but they learned to weave a sort of utilitarian mirror magic that was not subject to the magic-negating influence of their home. One particular Kamerel, Hallonac, believed that the race's detachment would lead to their downfall, so she created a way to spy on other races unobtrusively. She created a device that would copy any book that was ever written anywhere on the planes, as long as it was of ample length its author wished it to be read. She housed the ever increasing number of books in an infinite Mirrored Library. Naturally, the other Kamerel learned of this and slew Hallonac in disgust, but they did not dare to enter the Library, naming it 'Timaresh', the Collection of Hated Lore, preferring to simply set up guardians so that it would never be used again. Eventually, the Rilmani appeared and discovered the wonderous library. Attempting to gain access to better serve the balance, they were wholly ignored by the Kamerel and began to use force. A war began, and the Rilmani quickly gained the upper hand on the Kamerel, who were utterly unprepared for any relations with other races, including warlike ones. The Kamerel fled into the Mirror Plane of their own creation, abandoning the hated Libarary and their ancient home to the Rilmani conquerors. The Mirror Plane is a quasi-realm that existed only where a mirror or other reflective surface cast a reflection, and only when another being looked into that reflective surface to actually see the reflection. Thus, the Kamerel only existed when they were being even unwittingly observed. To the xenophobic race, this was horrifying, and unable to escape, they quickly went mad, although they did learn to hide themselves so that they would appear only as a brief flicker in the corner of a mirror gazer's eye.

Nen Itan is named as the overall leader of the Kamerel, but he is probably killed in the course of the adventure. It would be logical to assume that the Kamerel, being masters of mirror magic, created the Nerra because they were in need of shock troops but simultaneously hated the thought of direct involvement with other races. The Nerra's mirrorlike bodies might be thought of as a way for them to appear as one of the Kamerel by reflecting their masters' appearances. However, since Nerra only appeared in 3.5e and were never officially tied to the forgotten Kamerel, this is simply conjecture on my part.

I really like the part about Kamerel making mirrored constructs so they only see themselves in them. It fits their "insular, mad xenophobe" vibe to a tee. Also, if we decide to, we could make this mirror shattering the event which creates the Nerra, or somehow related to their creation, thus officially welcoming them into Planescape cannon. . .

I came up with some ideas for the Plane of Mirrors and stats for the Kamerel in this thread from a while back.