petition_head_of_faith_excommunication_scholastic_debate_effect

petition_head_of_faith_excommunication_scholastic_debate_effect = {
	add_character_flag = petition_head_of_faith_argument_learning
	duel = {
		skill = learning
		target = var:petition_head_of_faith_recipient
		# Base 10/10 = 50% at equal skill, neutral disposition
		10 = {
			desc = petition_head_of_faith_duel_success
			compare_modifier = {
				value = scope:duel_value
				multiplier = 1
			}
			modifier = {
				top_participant_group:the_christian_church ?= {
					has_participant_group_parameter = the_christian_church_more_likely_to_accept_request_excommunications
				}
				add = 5
			}
			# Virtuous/sinful traits modify duel chance.
			modifier = {
				num_virtuous_traits >= 1
				add = 4
			}
			modifier = {
				num_virtuous_traits >= 2
				add = 4
			}
			modifier = {
				num_sinful_traits >= 1
				add = -4
			}
			modifier = {
				num_sinful_traits >= 2
				add = -4
			}
			modifier = {
				petition_head_of_faith_disposition_favorable_trigger = yes
				add = 5
			}
			modifier = {
				petition_head_of_faith_disposition_skeptical_trigger = yes
				add = -3
			}
			modifier = {
				petition_head_of_faith_disposition_hostile_trigger = yes
				add = -8
			}
			min = 1
			petition_head_of_faith_excommunication_scholastic_debate_success_effect = yes
		}
		10 = {
			desc = petition_head_of_faith_argument_dismissed
			compare_modifier = {
				value = scope:duel_value
				multiplier = -1
			}
			petition_head_of_faith_excommunication_affront_failure_effect = yes
		}
	}
}

As written in game/common/scripted_effects/11_petition_head_of_faith_effects.txt.