Ezreal.
Ezreal is by far my favorite champion on League of Legends, the only problem is that he is really really squishy but in another way.. He is truly useful in teamfights more than you can even think of.

You're gonna need lots and lots of Armor penetration or if you think that armor penetration is useless as most of the people mention, you could just go ahead and take Flat AD runes, they are pretty much useful "only for harassing in early game" but what's the use of having the AD runes for late? As armor pene is way much better than Flat AD or per level <--- For Marks and Quintessences.

As for Glyph, I just take Flat AD Glyphs to harass in early game, I know that I just mentioned that it's only good for harassing in early, and that is if you want to dominate middle lane. Or in the other hand you could just take Cooldown reduction.

Last but not least, the Seals, I don't really know why people buy Mana per second Seals, I know that Ezreal has mana problems, but what do you have the letter B for?
Besides your going to end up with Tears of the Goddess at early game, so you wont suffer my friend!
Fear not, Tofg is your best friend.

The masteries are pretty much balanced 15/15
It's all about Armor Penetration and NOT to be squishy around the game. As you can see I added up Quickness 3/3 for harassing more and more, and a though to all of you Ezreal players, DO NOT WASTE YOUR GOLD on ATTACK SPEED. You never need attack speed on Ezreal, read his passive if you can.. 5 stacks + giving you a really high amount of attack speed it's helpful so don't end up buying Phantom Dancer.. Pretty much the worst item for Ezreal, It's all about damage and Penetration. Ah as you can see That's why I added up Black Cleaver as the last item!

You should never ever engage the fights, BE SURE TO have a tank in your team, while you are on the queue NO TANK = Leave queue, or you should just buy Frozen Mallet which you are going to completely regret .. or not!
So, wait for the tank to engage, be sure to use ulti first or when they are all at 50% HP.
Always remember that W is extremely useful in teamfights you could see in the Mastery that I've added up Magic Penetration, since Ezreals moves are all AP except for his Q and R, That's great for him and Remember that when you use W, it ignores the creeps and just aim for the Enemy Champion himself or their selves, besides it gives a buff for your team, by increasing their attack speed and decreasing your enemy's attack speed it helps vs carries, so never regret having W as an AD Ezreal.

Clairvoyance is a rarely used spells by damage dealers, it's usually used by supporters, as for Ezreal, it messes up everyone's day specially the junglers, they'll never notice that you can snipe them whenever you want, or you could just scare them away when they are low health and forcing them to go B.

And as for ignite, it's a common spell which everyone uses to Kill Steal? Or just ending up someones life and not to waste your mana! =D

Sorry that this guide is not that good or clear to you guys, but I would totally appreciate it if you'd go through it and read it, it helps a lot for an Ezreal beginner.

Thank you all,

My first guide!

All the best.

Rank up if you like it and if you don't please, feel free to leave a comment.