Voltiac Bola

You summon a 15 foot wide electrified bolas starting from you going in a straight line 30 feet. The line continues forward until it touches a creature. Upon doing so the line wraps around the target(s)* and the affected creature(s) must make a Dexterity saving throw against your spell save dc or become restrained and take 3d6 lightning damage. At the beginning of each turn affected creatures take an additional 2d6 lightning damage. A successful save negates the restrained condition and per round damage, as well as halves initial damage.

Each round affected creatures can take an action to break free from the line making a Strength (athletics) check versus your spell save dc.

*If multiple creatures are adjacent to eachother, to a limit of 3, fail the saving throw they are restrained together and take both initial and per round damage individually. However each creature makes the Strength check to break free at advantage when restrained together.

 At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the initial and per round damage increases by 1d6 for each slot level above 2nd.