You create a wall of swirling sand on the ground at a point you can see within range.
It blocks line of sight but not movement. A creature is blinded while in the wall's space and must spend 3 feet of movement for every 1 foot it moves there.
A flick of your wrist, and the ground before you churns. Sand whips into a swirling mass, rising to form a roiling wall. Its grains dance violently, obscuring sight and hindering every step taken within.