Warwick's E: Bloodlust
Since the rework of Soraka's Passive: Salvation, that makes it so that she gains movement speed when she runs towards an ally that is below a certain % of health, I don't think that it wouldn't be unreasonable to make the same for Warwick, although this is close to the eve of his rework coming up soon. Just a thought since is would make sense for his character to run faster towards a wounded champion rather than be able to use the speed boost to get away, which is out of character for Warwick. 
Tell me what you think!
Arcticpunk107