An arc of white lightning shoots from your finger tips to an object or creature you can see withing range. Make a ranged spell attack against the target. On a hit, the target takes 1d8 Lightning damage. Creatures wearing metal armor hit by this spell take a -5 penalty to their movement speed until the end of your next turn

This spell's damage increases by 1d8 when you reach 5th level (2d8), 11th level (3d8), and 17th level (4d8).