Widogast's Web of Fire

You strike your palms upon the ground, causing a web of flame to crackle out and streak towards up to five creatures you can see within 60 feet. The fire then explodes upward into a column of flame.

Each target must make a Dexterity saving throw, taking 8d6 fire damage on a failed save, and half on a success. Alternatively, you can cause all five streaks to fire to converge on a single target, intensifying the damage to 12d6 fire damage.

The fire can travel over objects up to 5 feet high, but cannot travel through water. Flammable objects in the fire's path are ignited.

When cast at higher levels, the spell deals 1d6 additional damage for each spell slot level above 4th.