Arcbolt

A crackling tendril of white energy lances out toward a creature within range, forming a sustained arc of lightning between you and the target on contact. Make a ranged spell attack against that creature. On a hit, the target takes 1d12 lightning damage, and on each of your turns for the duration, you can use your action to deal 1d12 lightning damage to the target automatically. The spell ends if you fail to use your action to maintain it. An arc will break if the target is ever outside the spell’s range or if it has total cover from you. If that target was the only one connected to an arc, this ends the spell.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, you may create and maintain an additional arc for each slot level above 1st. Multiple arcs cannot connect to the same target.