Arc Bolt

You hurl a bolt of lightning at a creature or object within range. Make a ranged spell attack against the target. On a hit, the target takes 1d10 Lightning damage. You have advantage if the target is made of metal or is wearing metal armor. 

This spell's damage increases by 1d10 when you reach 5th level (2d10), 11th level (3d10), and 17th level (4d10).