Shaco = Best Low Elo JG
Shaco feels like he would be a very good JG for climbing if you have Mastery 5 or higher. I've just played him in JP Server and crushed.
He has super strong early game... Q + W + autos + E + Ignite is a surefire way to kill/force Flash. You have immediate high impact on lanes.
You can adapt depending on the situation, he can split and he can also team fight.
Contrary to popular belief, he does NOT suck at team fights, not in low elo anyways. He can repeatedly bait team fights because low elo will literally open fire at anyone they see immediately... this is when you bait them into bad fights and then use your blinks, boxes, and Ultimate to outplay them.
Low elo is not equipped to play mind games against Shaco. They'll do what you want them to do 80%+ of the time. All it takes is for them to have 1 or 2 players who don't get Shaco.
At 3+ items he can kill anyone who isn't a tank with 1-2 autos and a few abilities. This and the CC he brings to fights in the form of the boxes gives him better teamfight than almost any other assassin JG in the game. (this along with invisibility makes him more dangerous than Zed).
You can legit 1 vs 1 anyone if you outplay with clones, boxes, and invisibility.
What do you think?