Board Thread:Lore Discussion/@comment-1255618-20190319212843/@comment-1255618-20190406071206

CatholicPrincess15 wrote: Then why was everything else of Mytheria destroyed by Sheogorath? Sorry for my late reply! xP

The Shivering Isles were always called "the Shivering Isles", as far as we know, even when they were under the control of Jyggalag. We don't know what or where Mytheria is, but the invterview imples it's not the Shivering Isles. Even though Sheogorath destroyed Jyggalag's library in the Shivering Isles when Sheogorath took over, he couldn't bring himself to destroy Dyus. Instead, he gave him with immortality and locked him away so that Sheogorath could make use of him at some future point. And indeed, the player does need Dyus's help to defeat Jyggalag in 'The Shivering Isles' DLC, so this was a demonstration of unusually remarkable foresight on Sheogorath's part.