Diana+Sated
It's been quite a long time since sated was released, and Diana still has neither animation not sound on her passive if it gets proced by the phantom hit, while other AA-modifier like Xin'S Q or Jax's Ult use their animation+sound. This is a known issue since sated was on pbe, and still nothing was done... And i simply can't think of any good reason why this wasn't adressed yet, it should be minimal effort and it would add alot of feel for the few AS/on-hit dianas out there
The same probably still hold true for Aatrox' W aswell.