I don't have a problem with the mage being immune to his own explosions. I tried to exploit this and kill myself as the mage, so I wouldn't have to fight him. I didn't realize, it would kill my main character too and I felt a bit cheated.
Ah you mean that the damage was hurting your uninhabited body? I thought I had disregarded that entity from damage logic, but perhaps my fix for that only applied to the melee attacks. If that’s the case then knowing that should make it an easy enough fix.