Vox Resonans

At-will, standard action, ranged, concentration, DC 19+; you target a creature or object within 60 feet and match its resonant frequency with a sustained tone. Objects begin to vibrate and, over 1-3 rounds of concentration, shatter. Creatures suffer increasing discomfort: at the end of each round, the target must make a Constitution save or take medium thunder damage and have disadvantage on all checks and saves until the start of your next turn.

• DC +4: the effect is immediate rather than building over rounds.
• Structures and large objects can be targeted, potentially causing catastrophic failure of walls, bridges, or towers over several rounds.