the act of Diablerie involves one Cainite(Vampire) draining another vampire of blood and then devouring their soul. Most vampires consider it a heinous act, akin to cannibalism. The aggressor, dubbed the diablerist, automatically loses a point of Humanity and is branded by black streaks in their aura that may persist for several years. Still, the practice holds a great deal of allure, for it is said to bestow the greatest pleasure imaginable to the diablerist, and can also grant him or her greater power and status.
Diablerizing the soul of a Cainite is one of the few ways of lowering one's Generation, for if the victim possessed more potent blood then the diablerist's Generation drops by one, possibly more if the victim was of notably lower Generation. However, there is the risk of some portion of the victim's soul living on within the diablerist. Rumors abound of diablerists taking on the mannerisms of their victims, and even stranger tales speak of the victims consuming their assailants from within and taking over their bodies. Some Antediluvians and Methuselah are believed to have survived their death in this manner.
That’s the WOD information, which I think would be interesting to invoke in our play. Obviously, we are not using the point system, so please ignore that part of it, but the rest is applicable.
I’m working on a CS now, I’ll have it posted here in a few.