You cause flames to emit from your hands in a short stream. Make two ranged spell attacks using your spellcasting attack bonus. For each that hits the target takes takes a d4 plus two times the number of times that target has previously been dealt fire damage this turn, all in fire damage. The die increase to 2d4s when you reach 6th level, 3d4s at 12th level and then to 4d6s at 18th level