Shake your wrist like you're thinking of your hot Aunt Lydia and a shield appears. Carl finally has one.
Equipping the big riot shield meant Katia Grim could not also use the wrist bracer she had been carrying, so she took it off her left wrist, put it on the table, and told Carl to have it — he needed a shield anyway. She had mostly only used it to increase her mass.
It forms a metallic buckler on command, triggered by hotlist or by shaking your wrist 'like you're thinking of your hot Aunt Lydia.' It is enchanted with Shatter: any attack landing on it has a 1.5% chance to disarm the attacker, and on a disarm there is a 90% chance the weapon drops, a 5% chance it breaks, and a 5% chance it transfers straight into the wielder's own inventory.
Carl slid it on over the sleeve of his jacket, opposite the bracer that forms his gauntlet, and practised twisting his wrist to pop the shield in and out. 'Hey, this is cool.' Princess Donut's assessment: much better than a litterbox.
A plain wrist bracer that snaps a small metal buckler into place with a flick.
Carl's first shield, handed down the moment Katia outgrew it.