Barricade

You create a semi-transparent vertical wall made of magical force with 25 AC and 10 HP. The wall is a solid object and appears within range. It lasts for the duration or until it takes damage. You can make a straight wall up to 40ft long, 40ft high, and 5ft thick. The wall provides total cover to creatures on either side of it and only creatures you allow can pass through it.

You can dismiss the wall as a bonus action.