Djinni Summoning

Djinni Summoning: Each device of this type has a specific djinni bound to it, which will be summoned to the wearer's location when they rub the device while wearing it. The djinni appears in the next round and protects, serves, and obeys the wearer. The djinni will serve at most 1 hour per day, and can be summoned at most once per day. If the djinni bound to a device is ever slain, the ring loses all magical properties.