Napalm Fireball
You target a position within 30 metres of you that you can see, and a rocket assisted pellet will travel there and explode producing B*(field,fire) and coating everything in sticky napalm in a 10-metre radius area. The napalm is ignited. Any creature within the area of effect must suffer three times your modifier in fire damage immediately, and then 2 times your modifier in fire damage for the next four rounds on each of your turns.