Vraghaer's Agonizing Whip

You make a hand movement creating a whip of lightning that once it hit's the target it causes immense pain and suffering

Make a ranged spell attack as a action if you hit a creature it must make a Constituition saving throw or Lose all of their moviment till the star of your next turn.

At Higher Levels: in the 5th have disadvantage on attack rolls, 11th falls prone, 17th the crature can take a action, a bonus action or a reation but only one in the same round.