Ziggs ablilities are invisible.
Just recently bought Snow Day Ziggs and in my 2nd game around 20minutes in my q and e started to become invisible. My e could be seen when it was on the floor but not mid flight, and the q you can see when it bounces but the bomb itself is completely invisible at all times, made it insanely easy for me to land shots and unfair to the enemy because they needed to dodge something they literally could not see.