They have a 1/10 chance to deal extra water damage when fired, increasing to 1/5 if using the Saradomin bow. As a Saradomin item they will keep the followers from attacking you at God Wars Dungeon and will cause bandits to attack you at the Bandit Camp. Using a Saradomin arrow in a Tirannwn quiver will not stop followers of Saradomin from attacking in the God Wars Dungeon.