Board Thread:Lore Discussion/@comment-98.176.143.75-20150317121154/@comment-131.172.78.161-20150505081546

sheogorath as a "person" is the effects of a curse placed on jyggolag which was broken during the last grey march. Rather I would think that each deadra has very close ties with their own plain of oblivion along with the CoC likely spending enough time in the shivering isles to have it influence influence them before they could influence it. Taking that sheogorath and jyggalag were at most one person before the grey march, it would also be possible that sheogorath and jyggolag shared the mantle to the shivering isles and thus when it was passed on to the CoC jyggolag was left without his own plain of oblivion. Thus if it is even possible to make a new plain of oblivion, it would take a large amount of time.

ps: anyone think of an organisation in skyrim intent on domination and order (specifically beliefes) who would stop at nothing to obtain such power. One which I think may have ties to the last of the alyeids (who were deadra worshiping mer).