While wearing these bracers, you gain a +2 bonus to AC if you are wearing no armor and using no shield.

You can use your reaction to make an X with your forearms causing a magical Shield to surround you adding +2 on to your AC, lasting until the beginning of your next turn. You can spend sorcery points equal to your Charisma modifier to increase this bonus further, 1 sorcerer point per AC. You make this decision after the creature rolls to hit, but before the DM says it hits or not.

Notes: Bonus: Unarmored Armor Class, Warding, Wristwear