Banshee Stone

This smooth and aerodynamic magical stone has the image of an ever-moving mouth floating in it. Occasionally mumbling can be heard from the rock and it has been known to inadvertently give away the position of those attempting to sneak. The Banshee Stone can be thrown up to 60 feet. When it lands, any creature within a 10' radius must make a constitution saving throw vs 13 against the blood curdling screams that emanate from the device before it crumbles. Upon a fail, the victim must drop any items in their hands and spend their next action reflexively covering their ears. Creatures unable to hear, constructs, or the undead are immune to the Banshee Stone's effects.