There's no damage/drain personality spells buyable in the game. Have checked all the Mage Guild halls, and then some. Found a site which lists all the spells and its vendors, and there were no drain Attribute spells.
As for the Clavicus Vile thing, I'm gonna try this:
http://www.uesp.net/wiki/Oblivion:Gl...cus_Vile_Crash
When I get better again, that is, I restarted the game.
Heh, I think I'm gonna restart again, cuz my Character has blue veins running all over his face. Something to do with Complexion, I think. Correct me if I'm wrong.