You throw a small mote of fire at a point within range that explodes on impact. All creatures in a 5-foot-radius must make a Dexterity saving throw or take 1d6 fire damage.

The spell ignites flammable objects in its 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). 

There are times that Fireball can be "too effective."

– Gilman Fizzlewix