add_virtuous_trait_effect

add_virtuous_trait_effect = {
	save_scope_as = trait_changer
	random_trait = {
        limit = {
        	save_temporary_scope_as = temp_trait
			scope:trait_changer.rite = {
                trait_is_virtue_rite = prev
            }
			NOR = {
				scope:trait_changer = {
					has_trait = scope:temp_trait
				}
				any_opposite_trait = {
					scope:trait_changer = {
						has_trait = scope:temp_trait
					}
				}
			}
			trigger_if = {
				limit = {
					this = trait:lustful
				}
				scope:trait_changer = {
					character_is_teen_or_older_trigger = yes
					NOR = {
						has_sexuality = none
						has_sexuality = asexual
					}
				}
			}
        }
        save_scope_as = virtuous_trait
    }
    add_trait_force_tooltip = scope:virtuous_trait
}

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