Zed multi shuriken bug.
http://webm.land/media/8UiK.webm
I thought it was odd that i killed a xayah in one frame so i looked back at the recording. In the video if you look closely you can see 2 pairs of shurikens originating from the same spot which in turn increase the amount of burst i can put out greatly. Ive managed to replicate this a few times by mashing Q and W at the same time. While rare it is unfair to the adc as it gives them way less reaction time.