While attuned to it, you can expend 1 charge and make a Weapon Ranged Attack Roll with the hammer, hurling it as if it had the thrown property with a normal Range of 20 feet and a long Range of 60 feet. If the Attack hits, the hammer unleashes a Thunderclap audible out to 300 feet. The Target and every creature within 30 feet of it must succeed on a DC 17 Fortitude or be Stunned until the end of your next Turn.