I personally have never done it, but i read awhile back what you gotta do, and basically you need a [censored]load of reputation and the other half of wraithguard from vivec, then you go to yagrum and he will unlock it for you, allowing you to wield kagrenacs tools.
So ive got a few questions.
First of all, that big hit of 200+ hp that you take for putting on the wraithguard. Does that take your max hp down? or just damage hp by 200? So what i mean is if i had 250 hp and used it, would i now only have a max of 50 hp now, or would i just be at 50/250 and just have to heal it?
Another question is, Does Azura say anything different to you at the end of the main quest. Cus i mean if i go do all this, i dont wanna come out of dagoth ur and have azura be like "nerevarine and horortar you have won thanks to my blessing! now go protect morrowind!"
I eventually want to make a character that beats dagoth ur without divine aid (yes i did it once the cheap way by getting a [censored]load of exlusive restore health potions and wielded the tools without wraithguard and just made sure i was healing like a mofo, and there was no difference at the end from doing the main quest normally doing it that way) but before i do so, i want to know if it even changes dialogue later in the game, or its just pointless and put in there for retards who didnt heed the warning when they got the message saying "killing this person severs the prophecies" or whatever.