LUX E INVISIBLE GAMEPLAY

So we decided to play Nemesis seeing as how it came out, and being a brand new game type on league i tried it out. So we decided to pick lux for the other team, and every time she would cast her E it would be a little blur on the screen and then literally go invisible at the location of the casters choosing. it would literally just be sitting there because we would be focused on the battle and all of a sudden the slow would hit us followed by the pop and her passive. I'm not entirely sure if its in every game type, but it most definitely in the nemesis game type.