Up until someone came up with the jungle ezreal schtick he was considered the weakest ADC in the game. So what happened? What is it that makes him so ridiculously broken in the jungle compared to the ADC role?
Rockem Sockm11 votesHe isn't overpowered, people simply aren't used too it. The jungle avoids ezreal main weaknesses.
Ezreal is an early game adc that needs to win and close in a timely fashion. He was picked jungle to gank early and help push down towers immediately.
He is coming bot or mid pre six and getting a kill plus tower or he failed.
Now let's look at why this fails in lane.
Red buff/blue buff/jungle mechanics cover Ezreal's weakness. The jungle allows him to poke with no block. If you play safe early, you should easily outscale him.
He is the most popular adc in Korea and one of the most popular in the world. People will find a way to play him.
BALDG1VEN BOOMER7 votesNothing, he just took 10 fucking years to scale with tear.
DaNinad4 votes46% win rate op plz nerf
Penns1 voteshe was already opieop but other adcs that use crit and ardent are even more opieop bot so he goes in a different role
just like 
mid
hehe
DuskDaUmbreon1 votes...I can never tell if you're sarcastic or serious. You always talk like that.
Unless you're always sarcastic. If that is the case, I have a newfound respect for you.
Penns1 voteshttps://i.gyazo.com/566c54a31d1bdd1ce29bdf6875f20206.png adcs opie hehe
Yago1 votesAwhile back, Ezreal's passive was buffed, and then his Q was buffed to have lower CD at earlier ranks. This makes it much easier for him to stack it quickly, and attack speed is invaluable for clearing the jungle quickly.
As a result of those changes, Ezreal has some of the fastest jungle clear times in the game, and his early damage has never been weak. This lets him rush into a lane with double buffs faster than most other champions could ever dream of, and beat you down with Red buff empowered basic attacks and Stormraider's Surge.
EDIT:
Furthermore, the mana regeneration passive found on the jungle items, as well as Blue buff, enable him to forgo building Tear of the Goddess to access his power spike items, Trinity Force and the Warrior Enchantment, far quicker than he can in bot lane.
Erockandroll1 votesAwhile back, Ezreal's passive was buffed, and then his Q was buffed to have lower CD at earlier ranks. This makes it much easier for him to stack it quickly, and attack speed is invaluable for clearing the jungle quickly.
As a result of those changes, Ezreal has some of the fastest jungle clear times in the game, and his early damage has never been weak. This lets him rush into a lane with double buffs faster than most other champions could ever dream of, and beat you down with Red buff empowered basic attacks and Stormraider's Surge.
EDIT:
Furthermore, the mana regeneration passive found on the jungle items, as well as Blue buff, enable him to forgo building Tear of the Goddess to access his power spike items, Trinity Force and the Warrior Enchantment, far quicker than he can in bot lane.
Makes me wonder if that actually makes him OP as a whole.
Past experience suggests that Clear speed is a poor balancing lever for most Junglers. Slow clearing Junglers were always vulnerable to faster clearing junglers who would always have the level advantage. (Which is tank junglers sucked, until Jungle items like Quill coat, and now Cinderhulk helped their clear speeds.)
But in the one worlds game that I saw him in, I wasn't particularly inspired. The shout casters commented about having a particularly expensive build for a Jungler. And even with that early game cheese, He didn't offer a lot to the comp. (Enemy has 2 tanks, and Ez didn't build a BotRK, or any other health shred.)
Thus begs the question, is Jungle Ez a problem? Well maybe, you don't have a lot of room to buff him, so it would be difficult to make him viable anywhere else, without making his Jungle build OP.
Salron1 votesRed buff.
HarIe1 votesHe clears the jungle very fast 3 camp double buffs at 2:25 (you can find some examples of this: 1 2 3 ) while staying healthy so long as he avoids Raptors and Krugs.
For more details I'll lift what someone on r/summonerschool had to say on the topic
I've been playing [Ezreal jungle] a lot. It's basically just for the early game cheese. See Ezreal jungle has the fastest level 3 possible out of all junglers besides maybe shaco which is insane. No one matches his speed really and his level 3 with double buffs makes him one of the best early game duelists. It's pretty crazy his damage output which can also make for good ganks early game.
Into the mid game or after his double buffs wear off lol. He becomes pretty bad or really bad if not ahead. he can't clear raptors or krugs fast at all. Wolves are decently slow but doable. He is very buff reliant and needs to get ahead early. Which he can do because he is like the best early game jungler currently.
Try finding a faster clear then this lol so stupid. http://plays.tv/video/59a9f4dc377cac4308/stormraider-ezreal-2-25-level-3
For reference here is a document containing a number of other jungler's clear times, routes they took, which patch it was performed under, and a video of their respective clears (including the jungle Ezreal clears linked earlier).
EpicMusic1 votesholy crap, that clear. i have yet to learn how to not reset the camps. i fck it up 50% when i try to do that lol. help me
DuskDaUmbreon1 votesNothing made him "overpowered" in the jungle. He's just not shitty there.
SiG DxD1 votessad 
now 
took jungle and could bot too
now graves not jungle not bot
KlydeFrog1 voteshe is basically like graves but different
