pam_challenge_hof_war_ai_attacker_victory_judgment_effect

pam_challenge_hof_war_ai_attacker_victory_judgment_effect = {
	var:pam_ch_hof_var_carrier ?= {
		pam_challenge_hof_war_restore_scopes_from_vars_effect = yes
	}
	if = {
		limit = {
			exists = scope:pam_ch_hof_old_hof
			scope:pam_ch_hof_old_hof = {
				is_alive = yes
				is_imprisoned = no
			}
		}
		# Apply the modifier first. The victim's event fires the same day and should already show it.
		scope:pam_ch_hof_old_hof = {
			add_character_modifier = {
				modifier = pam_deposed_pontiff_modifier
				years = 20
			}
		}
		pam_challenge_hof_war_ai_excommunicate_imprison_effect = {
			TARGET = scope:pam_ch_hof_old_hof
			IMPRISONER = scope:pam_ch_hof_new_hof
		}
	}
}

As written in game/common/scripted_effects/pam_antipope_effects.txt.