Stigma Enchantment Stone
You can enchant all applicable functions of the Stigma. If successful, the Stigma will increase by 1 level, with a chance to increase by 2 or 3 levels. If unsuccessful, the Stigma has a chance of decreasing by 1 level. Double-click (or right-click) the Stigma Enchantment Stone to activate and then select a Stigma to enchant.