Summoner Rift Beta, Master Yi's Alpha strike
Well I am not so sure if this is a bug or if it was intended, but when you auto attack the Dragon followed by a Q or Alpha strike, it literally gets canceled with no damage dealt from the ability; you still get knocked back. At a bare minimum you should at least do damage, especially for the long cd Yi has. maybe it was just a fluke when I did it, I only tried that combo once.