Welcome to my guide to Ezreal, as an Ez main I thought it'd help the community on how to play this ADC. He's in my opinion the safest pick for the role and I thought it'd be nice to see him brought back into competitive play more often by creating a DPS Ezreal guide. Below you'll find all you'll need to improve your champ mechanics if not win games.

Pros
1. Somewhat easy to learn
2. Carries hard when fed
3. Cross map sniping with ult
4. Easy to cs when zoned
5. Built in Flash
6. Can be very fun to play

Cons
1. Very weak until level 4+
2. Needs farm and kills to be an effective carry
3. Can be poked out of lane easily if not careful
4. ENTIRE kit of skillshots
5. Outscaled lategame by most ADCs

There's no real options here, start by maxing q, followed by e and ending with w. (YES, put points into your ult every possible chance.)

Passive/Rising Spell Force - His passive can be a small bit tricky early game but after you have a few points into both your q and e it's easier to upkeep constantly (Given your mana supply can handle constant spamming).

Q/Mystic Shot - By far your most important skill, being most of your damage and utility it's obvious why you'd max it first, on top of damaging an enemy hitting any enemy/jungle camp with it gives you both a stack on your passive and a 1 second cooldown reduction on all other skills.

W/Essence Flux - A waste of mana, yes its nice to have an attack speed buff and the free poke it provides if you can land it, but in the en it's really just a waste.

E/Arcane Shift - Literally a built-in flash, it does damage to the closest enemy though it's nothing amazing. It's only real use on ADC Ezreal is being an easy escape.

R/Trueshot Barrage - Minly used to pick off an enemy from a distance, it also can be used in a teamfights when enemies are clumped together for easy damage and passive stacks.

An easy way to cs with Ezreal's lower starting AD is by treating his auto attacks as being an ap toplaner such as Ryze, early game. Focus on hitting at the last possible second while using your q to either poke an enemy champ as they try farming or to use it to secure last hits easier. try not to be throwing q's out all the time though, mana keeps you in lane.

There's a lot of choices, knowing that most people like short but effective guides I'll leave you with knowing the items considered "optional" are very strong on Ezreal. Many of which are common sense on the items you'd use in any given situation.

You'll be running a very basic mastery set for almost all ADC's, its standard 21/9/0, with this setup you should have a high damage output and tankier feel than just the regular base stat Ezreal.

Most games it's best to run flash/heal, the only time you'll have an exception as to the summoners you choose are when your support takes heal. In the case of a support with heal I normally take barrier, though some others take Teleport, the only real rule here is to keep flash as one of your summoners.

When playing Ezreal you have high range, decent poke and a built in flash, taking this into account it's obvious that Ezreal is meant to be a very safe ADC. He doesn't much of anything to do damage but if you learn to farm early while playing offensively at the same time most ADC's will find you a pain to deal with throughout the game. The only ADC ez normally will struggle against is Caitlyn or any other high range ADC, you also won't be able to trade with champs such as Draven or Vayne, trading auto attacks is useless on a caster-type ADC until late game especially on Ezreal (Free auto attack poke is nice but don't risk an extended trade).