Vandril's Levin Bow

You conjure a bow of crackling lightning and loose a bolt of electricity at a creature within range. Make a ranged spell attack against the target. On a hit, target takes 1d6 lightning damage and has disadvantage on the next Dexterity saving throw it makes before the end of its turn, as the lightning causes its muscles to contract.

At Higher Levels. This spell's damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6), as the bow creates additional bolts of lightning all targeting the same creature .