So when will we get another champion with a unique auto attack mechanic?
We have graves but other than that there's no other champions that feature unique mechanics behind how their auto's work.
An example off the top of my head is something like:
X champion's auto attacks impact with and pass through all units hit when traveling to a targeted unit,and after hitting the unit, travels through the targeted unit a small distance then returns to X champion dealing damage to units on the way including the initial target.
X champion can not fire another auto attack till the first one returns but the auto attack has a drastically increased AD ratio and can crit on all units hit if the auto attack will crit the initial target.
Perhaps not an amazing example but still, it'd be nice to see actual unique auto attacks mechanics rather than normal auto attacks with passives attached.