Arkannon's Tiny Tempest

As an action, you conjure forth a minor storm within 30 feet of you. Until the spell ends, you can use a bonus action on each of your turns to cause a bolt of lightning to leap from the center of the sphere toward one creature you choose within 60 feet of the center. Make a ranged spell attack. You have advantage on the attack roll is within 5 feet. On a hit, the target takes 2d8 lightning damage.

At Higher Levels; When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d8 for every two slot levels above 2nd.