Warmage's Fireball

A bright streak arcs over the battlefield to a point you choose within range and then blossoms with a low roar into an explosion of flame. Each creature in a 50-foot-radius sphere centered on that point must make a Dexterity saving throw. A target takes 3d6 fire damage on a failed save, or half as much damage on a successful one. The fire spreads around corners. It ignites flammable objects in the area that aren't being worn or carried.