Dust Blast (Elemental Spell)

You can use an action to cast this spell when near sand, snow, gravel, or another dusty material. You manipulate a powerful gust of wind which kicks up the dust on the ground and launches it into your opponent's faces. All creatures in a 50 ft cone must succeed on a DC 10 Dexterity saving throw or be blinded for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

If a creature fails the saving throw, it also briefly coughs and struggles to breathe, giving it disadvantage on all saving throws for a round.