Divebomb

A bright streak of flame ignites your body granting you an additional 30 feet of flying movement to your chosen point in range, the fire is harmless to you and does not ignite anything on your person, while flying in this way you do not invoke attacks of opportunity from passing by hostile creatures and can move through their tiles, upon landing at your chosen point you create a violent explosion of flame in your wake. Each creature within 5 feet of the path you make towards your chosen point or within 15 feet of that point must make a Dexterity saving throw. A target takes 3d10 fire damage on a failed save and is knocked prone, a creature that succeeds their save takes only half damage.

The fire spreads around corners. It ignites flammable objects in the area 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 1d10 for each slot level above 3rd.