Destructive Retribution

A bright streak flashes from your pointing finger to a point you choose within range and then blossoms with a low roar into an explosion of flame. A target takes 4d8 fire damage at 3rd level. If the creature that is being attacked had attacked the caster, then the creature must make a dexterity saving throw (save DC of 14) if failed it takes an extra d6 damage, if it succeeded it takes no damage.