Wall of Bones

3rd-level necromancy
Casting time: 1 action
Range: 60 feet
Target: --
Components: V, S, M (finger bones from a dozen distinct hands)
Duration: Concentration, up to 1 minute
Classes: cleric, sorcerer, warlock, wizard
Subclasses:

You create a wall of grasping skeletal arms. The wall appears within range on a solid surface and lasts for the duration. You choose to make the wall up to 30 feet long, 10 feet high, and 5 feet thick or a circle that has a 20-foot diameter and is up to 20 feet high and 5 feet thick. The wall blocks line of sight. A creature that is within 5 feet of the wall when the wall is created, or that ends its turn within 5 feet of the wall, must succeed on a Strength saving throw or else take 2d4 slashing damage and be restrained by the grasping arms. A restrained creature can repeat the saving throw at the end of each of its turns, ending the effect on a success, or taking 2d4 slashing damage on a failure. Each 5-foot square section has AC 5, 15 hit points, and vulnerability to bludgeoning damage. Reducing a section to 0 hit points destroys that section of the wall and frees a creature restrained by it.