Durren's Arrow of Parallusion

A sparking arrow rockets from an illusory bowstring towards a target within range, enrapturing them within a net of electric energy and illusions. Make a ranged spell attack toward the target, on a hit, the target takes 3d6 thunder damage and must make an Intelligence saving throw.  On a successful throw, they take half damage; on a failed throw they are entrapped within a 5-foot circle of lightning, their speed is reduced to zero, and they believe they are being entrapped by a medium creature or large object of your choosing. 

When inside the circle, all melee attacks are made at disadvantage. The target may use an action to investigate the illusion, if they succeed against your DC they may make an additional Dexterity saving throw at the end of each of their turns to escape the effect of the circle, or if they use a subsequent action or bonus action to disengage the effect ends.

At Higher Levels: When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d4 for each slot level above 3rd.