The next time you hit a creature with a melee weapon attack before the spell ends, sand sloughs off your hands and blows into your target’s eyes. The target must make a Constitution saving throw. On a failed save, the target takes 1d4 piercing damage and is blinded for 1 minute. On a successful save, the target takes half the damage and isn’t blinded. If you hit the target with an unarmed strike, the target has disadvantage on the saving throw. At the end of each of its turns, the target can make another Constitution saving throw. On a success, the target is no longer blinded.