Band of Obedience

This item consists of a band made of an unknown metal and a small rock with an indent. As an action, a creature can put the band on a creature that is incapacitated or restrained. The band changes size to fit the creature that it is placed on, and is unremovable except by the creature holding the rock. A creature can break the band by making a strength check(DC 21). As an action, the person holding the rock can press the indent, and the person wearing the band takes 1 lightning damage and is paralyzed. This paralysis lasts until the start of the rock holder's turn. The shock this band emits is extremely painful, and if a creature is hit by it a number of times equal to 1d4 times their hit dice, they are in so much pain that they become unconscious and gain one level of exhaustion. A creature that is immune to lightning damage is immune to the effects of this magic item. This item is often used as a form of torture or as a way to force unwilling creatures to obey the user.