Board Thread:Lore Discussion/@comment-71.226.242.68-20131113201112/@comment-5647122-20140722041932

173.66.186.48 wrote: Perhaps few but Hermaeus Mora have the answer? I am sure that if any Daedra were killed, they might be forgotten anyways (almost like they never existed).

The closest thing known to Daedra passing away, would just be the changing of forms. A good example is Jyggalag trapped in Sheogorath. Malacath, in contrast, may [or not] have had Aedric / non-Daedric origins (lore-wise, shadowy Boethia was involved).

Another idea is that if Divine beings can become Daedra, can Daedra transcend Oblivion ?

I understand it would take a lot, but could still be oddly possible. But why would they? In order to become a Aedra, they have to die.