1) Was the arithmetic calculated based on the HP of the monsters, or was it verified in practice?
2) Is it necessary to replace Cerberuses with demons? Usually, after devils and efreets, people buy Cerberuses, and then all sorts of demons, scourges, etc.
P.S. The suggestion is really interesting! Of course, it's not suitable for online games or other serious games, but it's cool for fun or for specific tournaments!!!