You must be attuned to the wristbands to gain its benefits and cast its spells.

The wristbands have 10 charges, which are used to fuel the spells within it. With the wristbands equipped you may cast the following spells: spider climb, catapult, entangle(1 charge) or web, blindness/deafness (2 charges, spell save DC 15). No components are required.

The wristbands regain 1d6 + 4 expended charges each day at dusk. If you expend the wristbands' last charge, roll a d20. On a 1, the wristbands crumble to dust and is destroyed.