Arrow-Catching Shield

From Dungeon Master's Guide, page 152. Found on Magic Item Table G.

Description
Armor (shield), rare (requires attunement).

You gain a +2 bonus to AC against ranged attacks while you wield this shield. This bonus is in addition to the shield's normal bonus to AC. In addition, whenever an attacker makes a ranged attack against a target within 5 feet of you, you can use your reaction to become the target of the attack.