Shield of Deflection (5e Equipment)

Armor (shield), legendary (requires attunement)

This gilded shield absorbs attacks and transfers energy to its wielder. While attuned to and wielding this shield, you gain a +3 bonus to AC in addition to the +2 bonus normally provided by a shield, and when a creature within range of a melee weapon in your hand misses you with an attack, you may use your reaction to make a melee weapon attack with advantage against the creature.