Once put on, this gauntlet fits itself onto the left hand of it's wearer and once activated an adamantine buckler will mechanically unfold itself from the forearm. This allows the wearer to extend and retract a shield instantly during combat and wield 2 handed weapons. 

+3 to AC.

As a reaction, the shield can be brought out from being retracted to reduce 1d6 damage with a successful 16DEX roll.

 

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.

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.

Notes: Advantage: Constitution Saving Throws, Bonus: Armor Class, Advantage: Constitution Saving Throws. I did not originally make this only being added so I don't have to add it see Flightlessroyal for OC