~The writings of the Blood Mage Keryx, once Ul'faeruk of Sorcere~
Blood Magic~Chapter 7~Temporary Solution
To solve the fact of being in the cursed form, without priestess blood, I have found that drinking the blood of a female drow, will give the "ability" to revert out of the form. You will feel very weak at first and before you feel normal again, you will turn back to the form. I will continue research into a permanent solution but, this will have to do for now.
Blood Magic~Chapter 8~Spiritual Connection
The yath'abban that had been offering her blood, had gained a greater connection to me and Lolth, it seems, through the "letting ceremony" she performs, collecting her blood and offering her blood to me. Over time of drinking the priestess' blood, I grew stronger as well. I have received different samples of blood from different priestess' now and so far, the original yath'abban is the only one who has show the great connection. I have been recently taking the priestess blood by force as well, from the priestess' of the vault. Their blood is as good as the priestess' of Udos, yet are enemies to Udos. This is a definite way to gain control of the powers, without having to ask for it, or beg for it, in Udos, if you are so inclined. The spiritual connections still stands and receiving blood from the Yath'abban still will still help with the situation.
Blood Magic~Chapter 9~Frequent Donors
Though chapter 8 professes the complete solution, if you receive repeated donors, strength and ability of these forms seems to increase. They that are not priestesses but give large amounts of blood to myself, makes the curse calm as well as myself. With this it may be said, that even a little of her blessing is required, though for complete control, the blood of a yath, gives absolute control.