Stop being a filthy heretic and consorting with filthy heretics.
Honestly, there is a chance you can get them just from existing, as Chaos is Chaos. So basically stop being a heretic, and find redemption on the pyre.
I like playing sartosan stromfells so normally my solution is to feed things to sharks or just throw gold at it, but close enough I guess. P.S. my god would totally eat your god
Mutations get more likely as the Doom Counter rises. Otherwise, that just happens. Though it happens more often to people with magic potential.
Yeah, I found the game file that has to deal with mutation events, I was basically wondering if there was a factor in one of the code lines I could alter for a global decrease. I get that things like magic, warpstone, and the strength of the chaos winds influence mutation, but I figured there was an underlying factor beforehand that could be changed to influence these downstream. (I ask because the winds of chaos reach doom levels within my first generation, in 5 separate games)