Burning Bass

The ground to explodes from underneath in a shower of fireworks. Each creature  must make a Dexteirty saving throw. A creature takes 3D6 fire damage on a failed save, or half that on a successful one. The fire ignites any 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 2nd level or higher, the damage increases by 1d6 for each slot level above 1st.