[mivayan]

Charge body combined with total immunity would be dreadfully overpowered. Every enemy hitting one of your sacred units (for the first time) would die. Imagine attacking an army of knights with flagellants. 30 flagellants would beat 40 or 50 knights. Most of these knights would die.

Air9 giving charged body with no lightning resistance would be fun though, flaggelants turning into air-shielded suicide-bombs. This is not a good idea, but would be fun. Everyone dies but flaggelants are cheaper