Adcan's Lightning Step

Briefly surrounded by blue lightning, you can teleport up to 50 feet to an unoccupied space that you can see and a  stroke of lightning forms from your point of origin to the location you wish to teleport. This lightning is up to 50 feet long and 5 feet wide blasts you are. Each creature in that line must make a Dexterity saving throw. A creature takes 6d6 lightning damage on a failed save, or half as much damage on a successful one you are not harmed by this because you are the source of the lightning. 
The lightning 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 5th level or higher, the damage increases by 1d6 for each slot level above 4th.