You should probably mention this in the guide somewhere, then :P

Mmm, the supports you recommended are only half-useful. Leona and Taric are great due to their stuns freezing opponents for easy casting. But Alistar and Blitzcrank screw up skillshots, so they're not a good choice.

I would say Sona is a good choice for a double-poke composition, and her poke increases the damage of Ezreal's poke because blue aura. Soraka might also be a good choice to 1) decrease MR and 2) provide some mana regen in the early stages of the game (not to mention the silence). Lulu is also a good choice for a poke composition, and her silence is also pretty nice.

I'd say Janna is okay, but definitely not one of the best choices for Ezreal unless it's someone you're talking with over Skype (or next to you).

Nothing particular to say about Nami or Thresh. Thresh is a decent choice, but he might also screw up skillshots with Flay. Nami...you just don't see because she's too hard to land her stuns.

Good Guide! I'd recommend adding a section on support choices, but i think youv've nailed it.

Indeed! This build is designed specifically for Ezreal, and he should be picked for poke-heavy team compositions. However, if you need a carry who can take full advantage of Critical Strikes, then it'd be best to pick Graves or Vayne, etc.

The lack of crit halves your lategame damage, there's no question about it. This is one of those things that looks like it works because you're winning, but it's really more because you're better than your opponents than because you're building the champion in an optimal way. Other lategame carries will be critting for 600 with every autoattack while you only get to hit that damage with your Q whenever it's off cooldown. The DPS difference is absolutely huge. This build could work in a poke comp or in ARAM, but definitely isn't something you should consistently build every game.

It is much better than I expected :D

Well done ser :D

It's a revamped upload that reflects a lot of the changes/advice that I received from people's comments! I take Ignite over Cleanse or Barrier because 1) Arcane Shift is such a powerful defensive tool when combined with good positioning, and 2) it really lets Ezreal take advantage of his spectacular early-game burst in order to snowball consistently.

I thought the same way about Infinity Edge when I was making this build, but the damage you deal with Bloodthirster + Blade of the Ruined King + Last Whisper can actually keep up with the other Holy Trinity of AD if you land your Mystic Shots and burst correctly!

Is this a reupload? I think I've seen it before. I really like the looks of the guide btw.
Just a few things:
Ignite on an adc is really risky I think, Barrier (or even Cleanse), I think, is a lot stronger.
Also, I think building an adc without Infinity Edge is a bit scary when going into lategame, because you will get destroyed by any 6-item carry that DOES build that item. Even though each of the individual items work great with Ezreal, I think you are lacking the core AD-items to bring it into lategame.