Skull Clamp

This device appears broken. As an action, you may affix the Skull Clamp to an Incapacitated creature's head that's size is Medium of smaller. While affixed:
Any spell or other magical effects on you are suppressed. Racial and Class Abilities and Features that require a Short or Long rest do not refresh. The properties and powers of magic items in your possession are suppressed. You are at disadvantage for all Ability checks, attack rolls and saving throws.