Board Thread:Lore Discussion/@comment-25343239-20150128215539/@comment-72.69.233.109-20150222085514

Hopefully I can clear up a few things:

1) Daedra in general are immortal and cannot be killed. When their physical forms are destroyed, their essence is carried back to oblivion. In short, they are banished back to where they came from. Daedra are NEVER killed. When defeated, they are ONLY EVER banished. This is what happens when the player kills any daedra and also what happens when Vivec destroys Azura's physical form. When sent back to Oblivion, the daedra's essence will slowly reform back to its natural state. This reformation process can be very painful and possibly take decades or centuries. So with this in mind, Vivec did indeed take his revenge on Azura; causing her a great deal of pain and hardship.

2) Daedra lack the ability to come and go from nirn to oblivion at will. They can only traverse to the mortal plane with man/mer intervention. This is done through rituals or pacts, sometimes involving specific objects or tools. When the Dunmer summoned Azura for example, they were required to wait for a specific day, and had to use  "Azura's Star, an antler from the Wild Hunter King Dead Wolf-Dear, a ringlet from Alandro Sul's Wraithmail, and the permanently torn shadow of one of the court members". Only lesser daedra can be conjured with magic and in these cases, only for a short time before returning to Oblivion.

By opening an oblivion gate, like we see in Elder Scrolls 4, the daedra can move freely between Nirn and Oblivion as they like. THAT is why is the events of the elder scrolls 4 were so dangerous. If daedra can come as they please, there is no way to control them. They can destroy or kill without pause.

3) So in conclusion, the Oblivion Crisis did have a substantial effect. The world was in grave danger and the Hero of Kvatch's intervention saved man/mer from mass destruction.

4) We can still contact daedra because after being banished, they reform.

5) We see Daedric Princes like Nocturnal and Hermaeus Mora, entering the world in Skyrim, only through the use of objects or rituals like i mentioned before. Nocturnal uses her Skeleton Key and Hermaeus uses the Black Books. They still cannot enter the mortal plane of their own free will.

6) Vivec got as much revenge on Azura as he possibly could. She cannot die, and so he banished her back to Oblivion. This caused her great pain and hardship and most likely took her many years to reform. After she had fully reformed however, she can then carry on as she did before, and communicate with mortals, etc.