With this mod, you can join the Sixth House! So to speak. While I have nothing against the other "joinable Sixth House" mods out there, I believe that my interpretation of such a scenario is more believable. Without any spoilers, please note the "so to speak" addition in the mod's name. You might get disappointed if you expect some grandiose plot in which you become a living god. Let's just say that this is more like an additional, optional quest in the Main Quest.

C:\games\OpenMWMods\Quests\JoinableSixthHouseSotoSpeak

Joinable Sixth House - So to Speak.ESP