Board Thread:Lore Discussion/@comment-6685058-20130223165123/@comment-7153552-20130417144411

The Soul Cairn, to my understanding, isn't a plane of Oblivion. Oblivion is the realm that he Deadric Lords/Princes live and rule, each with their own realm. Then there's the plane of Aetherius where the Aedra orginat from. This is all from my rememberance, not any current research, so I could be mistaken at the moment. The Soul Cairn does, however, have rulers that are obviously very demonic.

The reason I'm remembering the bit about Oblivion is because of the stuff from the games. I remember the load screens talking about there only being X number of realms, one for each of the Deadric Lords. That being said, the Ideal Masters that rule over the Soul Cairn would certainly match the basic description and actions of a Daedric Lord in their way of dealing with necromancers. They deal with mortals, make deals, and usually turn the deal around with a great price that generally isn't worth it at the end of the day.

All of that said, whether or not the Soul Cairn is a plan of Oblivion, I still just don't believe that the Dwemer are in that realm. They are most likely off on some specially created realms that the Aedra devised and created for their imprisonment. The Aedra having the power to create (unlike the Deadra who only have the power to change) are more than capable of this sort of thing.