I am an Ezreal main, and I used Ezreal to get me from Bronze to Gold. Haven't played ranked for a while so these match histories may be a bit outdated but:



And yeah, obviously this guide ain't gonna make you win all your games, but definitely help improve your skills and help you climb :)

Pros:

Great poke
Great kiting abilities
High burst
Strong late game
High outplay abilites

Cons:

Non-meta
Relies on skillshots
Can't win sustained trades unless you're ahead

Ezreal's laning phase isn't too bad, however you have poor waveclear. If you are zoned out you can still farm with your q, which is one thing I love about ezreal. You are able to continuously harass and poke the opponent and force them to go back. Usually you wouldn't want to engage with your e as you always may get caught out by a stun or you get out traded. Always good to have a backup plan and not waste your flash. Pre 6 your goal is really just to farm up your sheen asap. Once you get a sheen, you have a massive power spike and your q's will do a high amount of damage. Never forget to poke your opponent at every chance you get. Don't waste your mana on e or w unless you have to dodge a hook/pull. When you have the sheen it is also when you want to go in for kills. If you have a support such as leona, then make sure you engage heaps and force your opponent out of lane. Also, you can try for an outplay by entering a brush after a bloody fight and the opponent slightly has the upper hand. As soon as the opponent can't see you, turn around and ult, then follow up with an e+q combo. This should take at least half the enemy adc's hp and even more if you have a sheen.

By now you should at least have your tri force and zerks. Always keep an eye out for low health enemies that you can snipe with your ult. Remember always use your ult to snipe someone if they are going through one of those tight alleys in the jungle. Here you have to make sure you don't engage with your e ever as you could easily get killed and possible lose the game.

Late Game isn't too scary for Ezreal. By this time you should have completed your build and just dishing out damage at the back of the team. I personally believe you can out damage most adc's in a teamfight as your q just does massive amounts of damage. You can't win sustained trades, so what you should do is just constantly poke the enemy mid and adc, getting them as low as possible.

I've seen heaps of ezreals e in to the fray and go after the enemy adc since one of your q's basically do 1/3 of their hp. Never do that! Your q's can be easily blocked by enemy teammates and late game that really is your main source of damage. Ezreal's greatest ability is to kite, so use that to your advantage and continuously kite the bruiser coming for you, while using your e and bork if he comes too close. They'll eventually give up as they realise they'll never reach you. Ult after you've put some distance from the fight and always remember to save your e for some clutch saves.

I believe Ezreal is a really strong adc, and although he is not meta I'm sure he can still dish out heaps of damage while being one of the best kiters in the game. Remember, you practically have 2 flashes on an adc. However he cannot win sustained trades as he does not rely on his auto attacks to do damage.