I found a bug in practice mode with the new champion kayn

well i was playing a practice mode game to see the new champion and when i placed a enemy dummy while i was in darken form and i noticed that i can kill the dummy if i use my combined with ignite.I was also able to kill the dummy just with my autoattacks but my ult had to be used earlier with ignite.So i was able to get a pentakill in practice mode with just dummys :) [zombie-brand-mindblown] i have a video but i dont know how to move it in here HELP..