Dancing Flames

Multiple rings of fire flare out from you. Each creature in a 15-foot radius sphere originating from you must make a Dexterity saving throw. On a failed save, a creature takes 4d8 fire damage, is pushed 10 feet away from you, as well as dealing an additional 1d6 points of fire damage at the start of each of their turns for 1 minute or until the use an action to extinguish the fire. On a successful save, the creature takes half as much damage and isn’t pushed.

The fire does not ignite any flammable objects in the area that aren't being worn or carried.

When cast at higher levels, the spell deals 1d8 additional damage for each spell slot level above 5th

-Strike a match, and I'll burn you to the ground.