to me the q w and e are the best to upgrade. e for the reset, w for the farming and slow, and q for the bonus damage. I know the ult upgrade will activate your passive and deal more damage over the next three or four basic attacks, but how I play is I jump on the carry and q w e and ult out and save the reset jump on when they use there cc ability to lock me down then I jump out and the rest of the team cleanse up from the bac