The more and more I play the game and think about parts of the lore we know already, the more I keep thinking about one conlusion I've made. The Vizier is behind the Stone Summit Civil War and the Charr invading the human kingdoms. He is trying to take over the world.
Okay, now, before you start proving my wrong with all of the studies you have done, just remember, this is all speculation. Let's think about it, the Vizier knows about the Sceptor of Orr and knows its power of controlling the titans, we don't know how yet, probably by venturing into whereever he got the scroll that caused the Cataclysm. I think that he was down in their before the Charr invaded, probably looking for information about the Sceptor, and found this scroll. The "Turn user and all nearby allies into undead" scroll.
So if he was going to take over the world, who were his threats? The humans and the Stone Summit (lets assume he didn't have any previous knowledge of the Mursatt). So he somehow starts a dwarf war (dont know how just yet), and "convinces?" the Charr to attack the human Kingdoms. How he did either, I don't know, but for the latter, he may have somehow shown them the Sceptor or something to convince them that he was able to control the titans (their gods). First they go to Ascalon, this goes as planned, as Ascalon was almost destroyed. Perhaps he gave them the magic for the Searing. Then Orr, which is when he causes the Cataclysm and becomes the Lich.
Once he's the Lich and sees that the Mursatt have appeared in Kryta to help defend it, he needs something to destroy them, since fueling the Shining Blades efforts isn't enough. So he gets us to ascend, and help kill the Mursatt. However, he didn't expect us to become powerful enough to defeat him.
Major Flaw in my theory:
Where the hell does Glint fit into all this?
Post Comments/Facts proving me wrong.