Thread:Perchan/@comment-25402543-20160207173219/@comment-25402543-20160207213215

It takes a lot of magic power and control in order to evolve the weapon and if you fail to control it you will be left in an extremely exhausted state, leaving you open for an attack. For every minute the ability is active, the user's body will be slightly burdened, if used too long it could cause permanently paralyze the user.

What about  Izanagi's personal weaknesses?