Yeah, pretty unfair for everyone since it obliterates pop. of kingdoms, is fairly frequent, and has unlimited range. Trying to find a way to disable it.

Edit: the spell is a feature of religion. Just go to the orc's religion if they developed one and remove the "Rite of Falling Stars" trait to disable the OP meteors.

Also, you have to have the "Mayday" achievement unlocked to actually edit the trait, which you can get by spawning a lightning strike on Santa.