Shield of Gnawing

Armor (shield), rare (requires attunement by a barbarian)

The wooden rim of this battered oak shield is covered in bite marks. While holding this shield, you gain a +1 bonus to AC. This bonus is in addition to the shield’s normal bonus to AC. In addition, you can use the Shove action as a bonus action while raging.

Gnawing Attack. If you bite down on the shield while moving at least 20 feet straight toward a creature and then hit it with a melee weapon attack on the same turn, the target takes an extra 4d6 necrotic damage. You gain temporary hit points equal to the necrotic damage dealt. Once used, this property can’t be used again until the next dawn.