Faerun - Northern Sword Coast - DnD

This finely detailed martial arts belt, crafted from White Dragonhide, symbolizes the humbleness of a long-teaching master. While wearing it, you gain a +3 bonus to the saving throw DCs of your monk KI features, and you can use an action to regain KI points equal to a roll of your Martial Arts Dice, usable once per long rest.