Band of Binding

Hums gently when held, and seems to sing when worn.

After Attunement, once worn the Band of Binding cannot be removed, except by subjecting its wearer to an effect that breaks curses. Breaking the curse on the Band of Binding removes its magical properties, and reverts it to a simple iron ring.

During a short rest, two creatures who wear the ring may bind their life forces together. Each individual's health pool becomes the sum of their original health pools, however, any damage dealt to one of them is dealt to both.