You send specks of sand splitting and swirling on the ground at a point you can see within range. You create a wall of swirling sand up to 30 feet long, 10 feet high, and 10 feet thick, and it vanishes when the spell ends. It blocks line of sight an creatures in the area are blinded and have their movement halved until they leave the area.

On each of your turns after you cast this spell, you can use an action to move the wall to another point within 20 feet of it. The wall reforms in this space as long as that space is on the ground and within range.