What is wrong with you? I turned a guy into a vampire recently and he told me people had been telling him that not feeding and going into stage 4 vampirism made you "One of the most powerful vampires." Okay seriously, stage 4 vamp reduces your health regen with the trade off being your vampire skils cost less to cast, all two of them -_- Mist form is mostly for running away/regrouping in pvp or sometimes avoiding aoe attacks you can't out run or don't have the stamina to dodge, makes sense, I'd run too with 75% reduced health regen. And then there's drain why do you need the cost of that reduced? When you're only able to use it once per monster I don't see where you'll be repeatedly spamming it much. And before everyone starts saying health regen in combat is useless (I disagree) it still sounds a lot more useful than reduced magika cost for vampire abilities, again all two of them. Getting tired of hearing this misinformation being spread. Eagerly awaiting the comments from people trying to explain how I don't know what I'm talking about as they try to explain it with total nonsensical logic and insults, and then strut around as if they're flipping geniuses.