Board Thread:Lore Discussion/@comment-2165692-20160701070121/@comment-2165692-20161025071218

There's a big hole in that theory. Frost magic, frost is also magic. Something that the Vampires are resistant and on occassion immune to, by your logic frost magic should be a good way of killing Vampires, just not as good as fire, but frost is no way of killing vampires either way, because of their great resistance to it. And we know that the sun is actually some sort of hole made by Magnus when he escaped Nirn.

Magnus is the god of magic, neither Aedra nor Daedra mind you.