You summon three sandpits on the ground on points you can see within range. Each pit is 10 feet wide and 5 feet deep and is difficult terrain. A creature that enters a pit for the first time on a turn or starts its turn there must succeed on a Dexterity saving throw or be restrained by the sand. A creature restrained by a sandpit takes 2d6 piercing damage at the end of each of its turns. A creature restrained by a sandpit can use its action to make a Strength check against your spell save DC. On a success, the creature is no longer restrained.