Fireball - Evocation

A bright streak flashes from your pointing finger
to a point within range at which point there is an
explosion. Each creature in a 20ft radius makes a
dex saving throw taking 8d6 fire on a failed save
or half as much on a success. It spreads to all
corners and ignites objects in the area that aren't
being worn or carried.
For each slot level above 3, damage increases by
1d6.