Its been great working with you Karver, it's been a fun experience and I've enjoyed it a lot. I'm glad this has been so well received. As for the other, he should get his fair share of appreciation.

I've experimented with the Ultimate Atronach stone and vampirism before, but I noticed that whenever I used the Vampire Lord power to change shape I lost the unlimited concentration casting from the extra magicka you get, or even just from going outside in the sun. How did you guys deal with that? Just stocking up on the necessary potions?

Stocking up on the potions is always a good thing to do. But it's best to just do whatever you need to do in VL form before you take the atronach. We just never used VL form again after getting the Ultimate Atronach. We didn't need to :D (although it is tempting against Dragons...) I'm not quite sure about going out in the sun though. I'm fairly certain it didn't seem to affect the unlimited concentration casting, but I'll need to check that.

Why didn't you mention Vampiric Grip in the Combat section?

Vampiric Grip is mentioned in the first three abilities in second phase. It is not mentioned in the first phase "Incapacitated" because we weren´t using it there yet.

When selecting perks, make sure that both ranks of Augmented Flames are taken before Aspect of Terror. Intense Flames is a useful little perk, as it helps with crowd control.

I believe you must also take Intense Flames before Aspect of Terror. Intense Flames adds the fear modifier that AoT triggers on. 

Look, guys. I tried really hard. I did. But I cannot resist making a comment about how this Mistress throws shade at her enemies. There. I did it. Carry on. Really nice build!

Actually, there is a hidden fear effect on every flame spell, causing aspect of terror to count them as fear spells, whether the fear effect is active due to intense flames or not. You don't need to take intense flames before aspect of terror - the damage you get is 27 per second, whether you take intense flames before aspect of terror or not. All that matters is taking augmented flames 2/2 before AoT.

Wow, I never noticed that. I guess she does... Thanks!

Thanks for the response, it makes sense now