You create a wall of viscous, opaque, swirling sand. The wall appears within range on a solid surface and lasts for the duration. You choose to make the wall up to 60 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. When the wall appears, each creature within its area must make a Dexterity saving throw. On a failed save, a creature is hurled through the air and lands roughly, taking 7d6 bludgeoning damage, or half as much damage on a successful save.

A creature can move through the wall, albeit slowly and only with great effort. For every 1 foot a creature moves through the wall, it must spend 4 feet of movement. Furthermore, the first time a creature enters the wall on a turn or ends its turn there, the creature must make a Strength saving throw. It takes 7d6 24 bludgeoning damage on a failed save, or half as much damage on a successful one. In addition, creatures within the wall of sand are blinded and deafened, unable to speak or breathe. Creatures will begin to suffocate if they remain in the wall too long.

In addition, spells with verbal components cannot be cast within the wall, and any caster concentrating on a spell or effect must make a DC 15 concentration check with disadvantage or lose concentration on their spell.