Board Thread:Oblivion/@comment-25531876-20150630013020/@comment-217.42.58.185-20170706134222

I agree, the barrier to the planes of Oblivion is an issue, but also don't forget the Sunken One underneath Kvatch, he is a storm Atronach, aka, a daedra. And he has been living in the caves beneath Kvatch for at least two generations. So it's not impossible for people to have summoned Daedra to Nirn in the past and they be mistaken for gods. Afterall, there are some planes that haven't been fully explored yet, so there may be new and frightening daedra still to appear in the series.