Ember Jet

As you make a fist around the lump of burned wood and blow through your thumb and index finger, a jet of flame emanates from your fist! All creatures in a 15-foot line must make a Dexterity saving throw. A creature takes 2d4 fire damage on a failed save, or half as much damage on a successful one.

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

This spell's damage and range increases by 2d4 and 5ft when you reach 5th level (4d4, 20ft), 11th level (6d4, 25ft), and 17th level (8d4, 30ft).