Blade Barrage

with a sweep of the caster's arms, a massive barrage of elementally-charged blades are flung in a cone. Each creature in a 30-foot cone emanating from the caster must make a Dexterity saving throw. A target takes 4d4 fire damage and 2d6 slashing damage on a failed save, or half as much damage on a successful one.

The fire ignites flammable objects in the area that aren't being worn or carried.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d4 Fire and 1d6 Slashing for each slot level above 3rd.