A lustrous stone with an affinity for others like it. In the Crossroads, they are gifts to close companions, sometimes even fashioned into jewelry. Over the course of a long rest, you can link your bondstone with one attuned to another player character, referred to here as your bondmate.

Stand By Me. When you are within 10 feet of your bondmate and they fail an attack roll, ability check, or saving throw, you can use your reaction to expend a hit die and roll it, adding the result to the total.

Teamwork. When you are within 30 feet of your bondmate, you can expend your Action to grant your bondmate an additional Action on their next turn; this Action cannot be used to Cast a Spell, and they may only make one attack if used to take the Attack action. This property can be used once per long rest.