Tempestuous Strike

 You call a strike of unstable lightning down on top of you, which causes you and all creatures within 5 feet of you to take 1d6 lightning damage (the damage dealt this way has no saving throw, and cannot cause you to lose concentration). 

The lighting then forks out from you in a 15 ft cone in a direction of your choosing and all creatures in the area must make a Dexterity saving throw in an attempt to reduce the damage by half or else they take 3d12 lightning damage and become stunned until the end of their next turn.

At higher levels. When you cast this spell with a spell slot of 3rd level or higher, the damage on the strike increases by 1d6 and the damage in the cone increase by 1d12 for each slot level above 2nd.