Moderate Tangibility Resonator

One of the stranger devices to come out of the University of Lepidstadt is a twisted glass contraption that hums with electricity. This vibration is harmless to most but is massively disruptive to the locomotion of incorporeal creatures. When activated, one incorporeal creature within 15 feet must attempt a DC 19 Fortitude saving throw. Once used, the vibrations cause the glass to shatter.