Dessert sands

You conjure a wind of scorching dessert sand. the sand travels in a line that originates from you, up to 20ft. wide and 60ft. long, sticking to and burning any creature it touches. All targets within the area must make a constitution saving throw against your spell save DC or take 5d8 fire damage, or half on a success. As the temperature of the sand continue's to rise, the sand turns to glass, restraining all creatures who failed their saving throw. A creature can roll a strength saving throw against your spell save DC at the start of their turn to end this condition.