Dancing Flames

You hurl a more of flame at a creature within range.Make a ranged spell attack against a creature within range. If the attack hits the creature takes 1d8 fire damage and you can make a another ranged spell attack at another creature within 15ft If the attack hits the creature takes damage equal to your spell modifier. 

The damage done by both attacks increases by 1d8 at 5th(2d8), 11th(3d8), and 17th(4d8) level.