Quote Originally Posted by Necrotica View Post
Is this stated in the game anywhere?
I am not sure if this is outright stated but we do get hints that Nidhogg is still in a way with Estinien. (Not sure about the "threatens to take control part")The way he talked with Tiamat. How he was able to see the souls of the death dragons on Ultima (just like the WoL), stuff like that. Of course you also have his attacks that are fulled by Nidhogg too.

I guess this could go many ways but it does feel like at least a bit of Nidhogg stayed behind. Maybe part of his aether.