Electric Propulsion

You channel lightning to shoot yourself along a surface at high speeds, you levitate 5 feet off the ground and can move double the distance of your move speed. Due to the high speeds at which you travel, you will not invoke opportunity attacks when passing enemies.

You may make a reaction to strike enemy dealing xd4 damage, x being distance fallen divided by 10, for example, if you move forward 30 you may deal 3d4 + weapon + proficiency + stealth attack/attack bonuses. 

If you take the reaction attack your movement is stopped instantly, for every 10 ft fallen you receive 1d4 damage, you may make a Dc 18 constitution saving throw, if you succeed you reduce damage by half. Any fall damage reduction feats/abilities take effect as well.

This spell cannot let you fly through air or stop your fall (nullifying fall damage). It only works 5ft above a surface, this does mean that you may travel over liquid and thick gasses.

Roll to hit is the weapon you are wielding.