Volcanic Ash

Sling forward a line of hot volcanic ash 30 feet long, 5 feet wide, and 10 feet tall. The line heavily obscures anything inside or behind it, and each creature in the line must make a Constitution saving throw. A creature takes 3d6 fire damage on a failed save, or half as much damage on a successful one.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d6 for each slot level above 2nd.