Thunder Ball

    A small spark appears from you extended had to a point you choose within range and then erupts into a sphere of pure plasma. Each creature in a 20-foot-radius sphere centered on that point must make a Dexterity saving throw. A target takes 8d6 lightning damage on a failed save, or half as much on a successful one.                                                          The lighting zaps around corners. It ignites flammable objects in the area that aren't being worn or carried.                     At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for each slot level above 3rd.