I figured something out:

Don't play as .

No matter how much fun he is, he's easily kill-able. He has a "balanced" kit, that is out matched by every champion.

He sends out 4% of his health to either deal damage + slow, or deal a little damage to surrounding enemies, or deal good damage to a far enemy. Or not sacrifice any health for a ultimate that deals damage and 1 knock back (per champion).

Don't worry though, you can regain this 4% health if you can get to the blob that is randomly flown to some place "near" Zac. Just don't run out of time or let the enemy step on it.

Ran out of health? You can revive with at least 50% of your health. Don't worry about the reduced health and health regen on items. You'll be fine with the 50%. Just make sure they don't kill your blobs that are trying to group together. They only have 14% of your health, so make sure to get lots of health or not get grouped or just get lucky.

Yep, he's way more "useful" than or .