Evander's Shocklock

A bolt of lightning shoots out to discombobulate the target from afar. The target must make an Intelligence saving throw. On a failure, the target takes 3d8 lightning damage, and is stunned until the end of your next turn, taking half damage and not being stunned on a success. 

At Higher Levels: When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d8 for each slot level above 3rd.