Thunderclap Dagger

Weapon (dagger), common (requires attunement)

This straight, slender dagger is engraved with a lightning bolt and has a hilt wrapped in copper wire. While holding this item, you can use an action to create a booming clap of thunder that can be heard up to 100 feet away. Each creature within 5 feet of the dagger other than you must succeed on a DC 11 Constitution saving throw or be deafened until the start of your next turn. This property of the dagger can’t be used again until the next dawn.