Tower Shield

A large wooden and metal shield is designed to be carried in one hand. Wielding a shield increases your Armor Class by 4. You can benefit from only one shield at a time. While using this shield, you have disadvantage on all attack rolls. However, you can use an action to deploy the shield as a stationary object. In its deployed state, the shield grants three-quarters instead of the bonus to your armor class, and you do not receive the disadvantage on attacks, you can use another action to revert the shield from the deployed state.