A fairy magic item that intertwines the souls of two beings. (Value: 10,000gp.)

The person who possesses the ring can give it to another person, causing them to be bound. (A Save Versus Spell is allowed, if unwilling.)

The binding may only be undone if: the ring is destroyed; Dispel Magic is cast on the ring or either of the bound persons; either of the bound persons renounces the binding; the one who gave the ring dies.