The jungle changes broke nunu top
If you bring smite top lane and help your jungler with gromp by smiting it and walking off once he kills it you get the buff too. It makes nunu practically untradable by anybody due to the passive from killing gromp.
You'll probably say "why bring smite blah blah tp much better blah blah" Well, I was trying something new for the hell of having fun.
Try it sometime like a bot game or in a casual normal game with friends. You'll see just how op that buff is on nunu. Unless the enemy champ has some super fast form of sustain like say WW Q or Rek'sai passive with fury heal(I don't even think that'll help much) You aren't winning the trade with him at all.
The cool part is now 2 people have it