Probability. Average Leadership, Management & fief loyalty, subtract 1 if fief is in unrest and 5 if their is active heresy in an adjacent fief. Apply skills, check for every turn. If Heresy breaks out, you must do a 10% Pillage on fief or be excommunicated (unless you can convince your bishop to ignore the situation). Heresy routines are not yet implemented.

+                                           -                                           

Heresy                                      Clerical Charm                              

Sorcery                                     Chivalry                                    

Clerical dislike                            Pious                                       

Superstitious                               Piety Extraordinary                         

Devout                                                                                  

Rabble Rouser                                                                           

Simpatico                                                                               

Evil Eye                                                                                

Brilliance                                                                              

Abrasiveness                                                                            

Impetuous