clerical_kill_piety_effect

clerical_kill_piety_effect = {
	if = {
		limit = {
			exists = faith.religious_head
			faith.religious_head = $VICTIM$
			NOT = { has_perk = divine_retribution_perk }
		}
		if = {
			limit = {
				situation:the_christian_church ?= {
					has_situation_top_phase_parameter = the_christian_church_clerical_violence_less_consequential
				}
			}
			add_piety_level = -1
		}
		else = {
			add_piety_level = -2
		}
	}
	else_if = {
		limit = {
			NOT = { has_perk = divine_retribution_perk }
			$VICTIM$ = {
				pam_is_senior_cleric_of_character_trigger = {
					CHARACTER = $KILLER$
				}
			}
		}
		if = {
			limit = {
				situation:the_christian_church ?= {
					has_situation_top_phase_parameter = the_christian_church_clerical_violence_less_consequential
				}
			}
			add_piety = medium_piety_loss
		}
		else = {
			add_piety = major_piety_loss
		}
	}
}

As written in game/common/scripted_effects/00_prison_effects.txt.