Desert Breath

You open your jaw and spew out a powerful wind in a 15 ft. cone, containing 1d4 tons of sand. The wind is sweltering like the desert and causes 1d12 of flame damage. The area within the cone becomes difficult terrain and any enemy within the cone must succeed on a CON saving throw of 15 or be blinded until it succeeds. 

This spell's damage increases by 1d12 when you reach 5th level (2d12), 11th level (3d12), and 17th level (4d12).