give_cannibal_secret_or_trait_effect

give_cannibal_secret_or_trait_effect = {
	save_temporary_scope_as = cannibal_character
	if = {
		limit = { #Not already a cannibal
			is_cannibal_trigger = no
		}
		if = {
			limit = {
				is_available_quick = { advanced_ruler = yes }
				NOT = { knows_tenet = tenet_ritual_cannibalism }
			}
			add_known_tenet = tenet_ritual_cannibalism
		}
		if = {
			limit = {
				trait_is_shunned_or_criminal_in_my_or_lieges_rite_trigger = { TRAIT = trait:cannibal GENDER_CHARACTER = scope:cannibal_character }
			}
			add_secret = {
				type = secret_cannibal
			}
			shunned_or_criminal_sf_impact_effect = { TRAIT = trait:cannibal }
		}
		else = {
			add_trait = cannibal
		}
	}
}

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