Crowe's Wall of Warding

A translucent, grey, kaleidoscopic wall springs forth to a point you choose within range. The wall appears in any orientation you choose, as a horizontal or vertical barrier or at an angle. It can be free floating or resting on a solid surface. You can form it into a hemispherical dome or a sphere with a radius of up to 10 feet, or you can shape a flat surface made up of ten 10-foot-by-10-foot panels. Each panel must be contiguous with another panel. In any form, the wall is 1/4 inch thick. It lasts for the duration. If the wall cuts through a creature's space when it appears, the creature is pushed to one side of the wall (your choice which side).The wall also extends into the Ethereal Plane, blocking ethereal travel through the wall, but not teleportation (such as with the spell misty step).

Upon casting this spell you can choose up to 4 creatures who are able to pass through this wall at any time during it's duration. The wall has 50 hit points, and tethers part of itself to the chosen creatures (you choose the priority of damage defense if the targets are hit by a spell that affects an area). If those Creatures are hit during this spell's duration the wall takes the damage instead. 

No other creature can physically pass through the wall. It has resistance to all damage and can't be dispelled by dispel magic. A disintegrate spell destroys the wall instantly, however.