Combustion

Pointing your finger, you cause a small explosion that can be heard up to 100 feet away. Choose a point you can see within range. Each creature in a 5-foot-radius sphere centered on that point must make a Dexterity saving throw or take 1d6 fire damage.

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

This spell’s damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).