Uldavarian's Interviews with Mongrels: Mobius Tawilliger
Uldavarian has long been interested in the secrets of sorcerers and the aberrant bloodlines that muddy their veins. He has spent a great deal of his life interviewing nearly one-hundred sorcerers on their family histories and experiences, only ceasing his travels when he was crippled by Faustian LeStrong for referring to him as a mongrel.
To learn the Interviews' secrets a magic-user must study them for 8 weeks. From then on, once per day a magic-user may impose a +4 penalty to the target(s) Saving Throw of a single spell.
While Juliett Manila finds Mobius' opinions on sorcerers as mongrels odious, she is unwilling to turn an aged spellcaster, even a bigoted one, out on the street. Thus, she allows him to teach a course on his Interviews to her students.