ball of rotting

your movement is trued in to 50 feet, but you can only move in a straight line, and anything you hit takes 2 d6 necrotic damage. if it is a creature the target must make a dex check14 or higher if it fails it takes the damage normal way...but if a success the target dodges the attack 

if you hit something you change trajectory / move a different way and in a line, you do this until you run out of movement.

you can't dash