Animated Shield (Attunement)

Very Rare

While holding this shield, you can speak its command word as a bonus action to cause it to animate. The shield leaps into the air and hovers in your space to protect you as if you were wielding it, leaving your hands free. The shield remains animated for 1 minute, until you use a bonus action to end this effect, or until you are incapacitated or die, at which point the shield falls to the ground or into your hand if you have one free. A shield is made from wood or metal and is carried in one hand. Wielding a shield increases your Armor Class by 2. You can benefit from only one shield at a time.

Helm of Brilliance (Attunement)

Very Rare

Source: DDHC-COS Ch.4 Castle Ravenloft Gems: 7 diamonds, 11 rubies, 14 fire opals, and 11 opals