Zac (Nuff Said) :^)
He's the best jungler right now. Period. Unless you invade him heavily with strong lvl 2s like 
, 
etc, he will pretty much just out pressure and out scale.
Yet 2(3?) patches ago he was supposedly down in the dumpsters.
How'd that happen? It happend because of an over tune. Q got a max health scaling, generated an extra blob which increased his clear speed and ability to stay healthy.
Now for the next few patches is, you guessed it! A repetitive series of nerfs to his W and E. (???)
I never understood it, 
DOESN'T NEED A LATE GAME SCALING ABILITY. HE SCALES RIDICULOUSLY WELL ALREADY.
Why would you not just revert his Q max health scaling, or keep it and remove the extra blob, which can be argued as even more broken as it allows about 2 extra Ws to be pumped out during an early clear on the wolf and krug camps.
I'm more than slightly frustrated because it seems oblivious enough, that when you push through a buff in an area and suddenly a champion jumps up 9% in winrate the solution might just be to draw back some of the original buffs.