Bolt Lightning

You call down a Mighty bolt of raw Lightning as your hand's clap together,  causing a massive lighting bolt to strike a single creature, it takes 8d8 Lighting damage on a failed save, or half as much damage on a successful one. 

 At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the damage increases by 1d8 for each slot level above 5th.