Arcane Taser

You hurl a crackling bolt of electricity at one creature within range. Make a ranged spell attack. On a hit, the target takes 2d6 lightning damage, and it must succeed on a Constitution saving throw or be paralyzed until the end of its next turn. As an action on each of your subsequent turns, you can maintain concentration to continue the effect, causing the target to repeat the saving throw. On a failure, it remains paralyzed, and on a success, the spell ends.

Using a Higher-Level Spell Slot. The initial damage increases by 1d6 for each spell slot level above 1.