Big Bang Attack

Yes this is a dragon ball refrence don't go away just yet

You extend your hand forward with your palm bent in a 90 degree angle. Then, you power up and charge a devastating blue energy sphere in your hand. Then you fire the energy sphere towards a designated target. The target takes 1d10+2 force damage from the blast, plus everyone except for the target takes 1d6 fire damage from the explosion, which effects in a 30ft square

higher levels: increase the damage increment by 1d10 for the energy ball and 1d6 for the explosion. Also increase the radius of the explosion by 10ft