So about Zac

I'm not a Zac main, nor do I play him that often I felt like I needed to address this; why is Zac's passive 8 seconds?

That's a long time to be honest. 8 seconds until his passive blobs reach him and revives him? That is insane there is literally only 1 time that you will actually take advantage of your passive and that one time is only if you die under your tower at like level 3. Other than that his passive is almost worthless. You can 2 hit his blobs quite easily due to their health pool being so low and many in meta champs have insane AOE abilities that makes his blobs even weaker. If you're going to make his 2nd passive effect worthless why even give him one?