Tempest Strike

You allow the storm to build inside you, causing the air to crackle with static electricity and fill with droplets of hot water. Make a mele weapon attack using your charisma modifier. On a hit the affected creature takes normal weapon damage along with 2d8 thunder damage and becomes wet.

Using a higher-level spell slot allows you to target an additional object or creature with this spell within mele range of the creature chaining 2d8 lightning damage.