Clangor Clapper (Patreon)

Weapon (club or mace), uncommon

This all-metal weapon used to be the clapper to a bell. When you hit a creature that's made of metal or that's wearing metal armor, the target takes an extra 1d4 thunder damage from the attack. On a 4, the target begins to resonate. While resonating, the target has disadvantage on any ability check it makes that relies on hearing, and it takes another 1d4 thunder damage at the start of each of your turns. The target continues to resonate until you roll a number other than 4 on this d4.

"Didja get yer bell rung again?"

"What?!"

"DID YA GET YER BELL RUNG AGAIN?"

"Sorry, I can't hear you! I got hit by that guy's mace again!"