In the rule “Artifacts”, replace “increase the Artifacts of that Cult by C*V where C is the half the number of Believers who were both members of the Cult and whose Location was the Target at the time the Order was sent, rounded down, and V is the Extradition Value of the Target” with:-

increase the Artifacts of that Cult by C*(V+P) where C is the half the number of Believers who were both members of the Cult and whose Location was the Target at the time the Order was sent, rounded down, V is the Extradition Value of the Target, and P is the Power score of the Cult