Screecher

Armor (shield), very rare (requires attunement by a ranger)

Emblazoned in high relief at the center of this kite-shaped +2 shield, a stylized chanting songbird stands out in bright color.

You may select one creature type among your favored enemies with a command word, causing the shield to emit a high-pitched cacophony audible only to creatures of the chosen type. The noise is so loud that it drowns every other sound in a 20-ft. radius, temporarily giving the deafened condition to all creatures of the chosen type that remain in the area. While the shield is active, you automatically fail Dexterity (Stealth) checks against creatures of the chosen type, and these creatures always prefer to attack you over other targets whenever you are within reach of their melee attacks.

As an action, the wielder of a screecher can amplify the noise, discharging an earsplitting screech that deals 35 (10d6) thunder damage to all creatures of the chosen type within 20 feet of the wielder, or half as much with a successful DC 19 Constitution saving throw. Creatures failing their saving throw are permanently deafened. After being used this way, the screecher goes silent and functions as a regular +1 shield for the next 24 hours.