Hemalurgy

An Art of Blood and Destruction'
This is a custom magic system that permits someone to steal another persons disciplines, or arts, usually killing them in the process. This magic system however, is not often used due to it's abhorrid application, and not necessarilly usefulness

System
A metal spike is driven through a character's body, usually a vital organ which kills the target, and it "steals" all the points that that character had in a given art/discipline etc., or conversely, it may steal up to three points in an ability depending on where the spike is driven, and when driven into the body of a recepient, the receiver gains all the points that the spike stole, and furthermore, the spike, while it might pierce a vital organ, will not harm the user afer the first level of damage taken. Though removal of said spike may cause death.

Drawbacks Strengths
 * Each spike lowers the difficulty of disciplines and arts that affect the mind (ie Dominate, presence) by one.
 * For every three spikes, the appearance is lowered by one
 * For every day that the spike is left outside of a body it loses one point of what was stored therein
 * One spike may only steal on discipline, art, or ability
 * Any person may receive a spike and for all intents and purposes, they may use the stolen Discipline as if they were the original donor.
 * Easy acess to ability points

Unknown
One issue that a PC may encounter is that this art is relatively unknown, except to a very few select individuals who guard the secret jealously. Even rumors are rare, found only amongst the most ancient, or those with a hoard of knowledge (most who have this knowledge have an occult score of at least 5).