What is MP Idiot?
From OHRRPGCE-Wiki
In the enemy editor, under bitsets, you will find a bit called MP Idiot. When this bit is turned on, the enemy will lose a turn in battle whenever it tries to use a spell that it does not have enough MP to cast. This is apropriate for an enemy who does not know how to fight when it runs out of magic.
Enemies that do not have this bit turned on will avoid using spells when they have insufficient MP, and they will use their other attacks instead. This is appropriate for an enemy who keeps fighting with other attacks when it runs out of magic.