Web of Fire

Striking both palms on the floor, a web of flame crackles out around the caster, and five streaks of fire rapidly snake across the ground towards up to five creatures you can see within 60 feet, leaping up and exploding into a column of flame upon reaching them. Each target must make a dexterity saving throw, or take 8d6 fire damage on a failed save, or half as much on a successful one. Alternatively, all five streaks of fire can instead converge toward a single target, dealing 10d6 damage on a failed save, or half as much damage on a successful one. 

The fire can travel over objects up to five feet high, and ignites any objects in its path that aren't being worn or carried. 

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for each slot above 4th.