Convulsing Zap

You create a static charge between your fingers before launching it towards a target within 45ft. Make a ranged spell attack against the target. On a hit the target takes 1D6 lightning damage and must make a Constitution saving throw. On a failure, the target can only move a maximum of 10ft on it’s next turn. 

This spell's damage increases by 1D6 when you reach 5th level (2D6), 11th level (3D6), and 17th level (4D6).