A wall of shimmering, mystifying energy springs into existence at 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 20 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 foot thick. It is translucent and intangible and lasts for the duration.   When the wall appears, each creature within its area must make a Wisdom saving throw. On a failed save, the creature is stunned until the start of its next turn or until it takes damage. A creature that starts its turn in the wall’s area or that enters it for the first time during a turn must also succeed on a Wisdom saving throw or become stunned until the start of its next turn or until it takes damage.