Caster Magic, Lost Magic, Ancient Spell
Separation Magic is an ancient support Caster-type Lost Magic.
Ancient magic that can (separate) a living thing into "copies" of others. This magic is not like Clone Magic exactly, while similar it works differently. The original form is broken apart with the pieces having portions of the original personality and magic power. Example, if a Mage was to use this Mage on themselves the caster would turn into two separate people, each have some of their persona and magic talents. However, for the unique small percentage that lack other world counterparts, if this magic separate them than the copies look exactly the same. In all other cases the copies' forms can be manipulated. However, if this magic isn't reversed it will remain permanent. If the copies fight, injuries aren't felt between them but death is shared. Furthermore, if the copies fight each other, than the winner will reabsorb the loser(s) and the winner will be the dominant personality.