I young man joins a magick coven, who intends to spread good things and enjoy life. But, it turns out they are in a war with a black Magick coven, constantly turmoiling and fighting all over the place in all sorts of Magick.
The White Coven then goes through the processes of impregnating a woman with a Spirit, that would then head them to the top of the power list (basically making a Spirit incarnate).
A tale of nobility and deciet, love and sex, purity and drugs, and a powerstruggle that breaks the world out in war... Surely a classic to be read and enjoyed.

Once again - MoonChild by Aleister Crowley