Black Sand

The wraps have 3 charges and regain 1d3 expended charges daily at dawn. As an action, you can hold out your hand and expend 1 or more of the wraps’ charges to release a blast of black sand from it in a 15-foot cone. Each creature in the area must make a DC 15 Constitution saving throw. On a failed save, a creature is blinded until the start of your next turn, and for each charge you spend, it takes 1d6 bludgeoning damage plus 2d8 necrotic damage. On a successful save, a creature takes half as much damage and isn’t blinded.