New renekton is overtuned, and affords no inlane counterplay.
First off, that healing? it's impossible to poke the croc in any meaningful way now. He also gets higher damage-output all at the same time, because his fury is available more in fights. YEY.
And also: No downtimes. There really is NO counterplay to him any more, because if you engage during his traditional "downtime" eg. 0 fury... well he just gains a million fury by proccing 2 abilities on you, and then uses empowered stun to smack you in the face. So unless you can avoid him COMPLETELY and still farm... well good luck.
: Awww you're so cute