Everything

Each clone is the precise replication of a mortal, ghoul, or vampiric individual. The clone is created on a template of DNA and psychic impressions taken from that individual through study and the use of stolen genetic material. This clone is perfect, and emotionally pliable for a time — but over the course of a few days to weeks, subtle imperfections begin to creep into the programming, eventually driving the clone insane. If the clone is not destroyed by this time, it will go murderously rogue, attempting to eradicate its original (the individual whom it is a copy of) and destroy its creator.

System

This ritual takes three nights to complete, and the caster must possess some amount of the target’s genetic material (such as skin cells or a hair), which is destroyed in the casting. The clone created by this ritual is a perfect, but living, duplicate of its target in every way, including all appropriate Merits, Disciplines, and personality traits, but only possesses the most rudimentary memories of the individual it is replicating. Over the course of the next seven days, the clone’s psychology becomes more and more psychotic, and its Disciplines or other powers (as appropriate) become wildly unstable, until it becomes almost entirely unrecognizable from their original state. If allowed to survive, at some point after the seventh night, the clone will go on a violent murder spree — ending only in its death, preferably after the death of the individual it was created to replicate.

Although the clone is a living creature (and must eat, sleep, and breathe), if it is a replication of a vampire, it appears to be a vampire to all ordinary and supernatural means of detection.