Another, much darker, treatise on sex magic should be æThe Intimate Diary of VersaillesÆ, containing a great selection of what the nobles liked sex magic for. Yes, there are some rituals using sex as a source of power, even some abilities that CasanovaÆs first handbook skipped over or he didnÆt know about to record. However, the majority of the content is about all those things he warned about in his second book - how to take advantage of lovers, use peopleÆs affections, warp and take control of them through the very sex rituals they had performed, and all of the dark and nasty stuff that turns a person into a possession of the sexual predator using the dark side of the sex arts, compiled by the practitioners of this seedy side, in the court that was the very capital for sex magic among the aristocracy that perfected it.
Between them, these three volumes contain all but a very small fraction of the sex magics ever created, say 94%, as they were all compiled and recorded during the peak of the æGolden Age of Sex MagicÆ, where research ran high, new parts were created and old parts of the ancient art restored from obscurity by an interested elite that had nothing better to do.
Edited it say: You wouldn't give anyone you liked a copy of the Diary of Versailles, as it is a book on how to be a very nasty person. But if it should appear in the hands of some bad guy later on, or just the hands of a lonely nerd... it creates the possibility for a conflict that didn't occur in the series.
"Say, uhm, Random Nerd #1 over there has just gotten Cordy wrapped around his finger in, like, the space of a day and a half. Do you think magic is involved?"
"Of course. Here, let me look up the counter... Oh my!"
"What?! Do you mean that we can't save her, or anything? She's doomed to be the pimple-faced geeks love slave for all time?"
"No, that's not it at all. There is a counter, even a very simple one, but..." (polishes glasses)
"What? What's going on? You're wigging me out Giles!"
"Well, you see..." stutters uncomfortably "this is one of the darker rituals of sex magic she has fallen under and I'm afraid the, well, counter is also in the school of sex magic, and..." resumes polishing glasses. "Well, to put it bluntly, the counter cannot be performed without having boy+girl sex with the victim you are to save."
flatly. "That's sick, Giles."
flustered. "No! For heaven's sake, I wasn't recommending myself! The consequences alone... not to mention professional behavior, and the Watcher's Counsil regulations... No, that's simply impossible. In fact, I am shocked you would even suggest it."
"Yah! But, like, where are we going to get a guy to..." affronted look on face.
"No. That's quite impossible. Sex magic is all centered around the energy of life, and Angel is, in spite of having a soul, still quite dead, or undead rather. The rituals of this art are utterly and completely useless to him. You might as easily ask one of those posters of a rock star you young girls collect to perform the magic. The essential energies for the act are just not present."
"So, where are we going to get a guy..."