[2.2] The only Ezreal guide you will ever need

STARTING ITEMS

Long Sword will always be your starting item. There are many reasons:

1. Mystic Shot scales with AD, so your trades and pokes will deal more damage.
2. It builds nicely into Caulfield's Warhammer

On your first back, look to pick up Tear of the Goddess so you can finish stacking for your Muramana as soon as laning phase ends. If you have additional gold, Sheen is also a huge power spike for Ezreal because it pretty much doubles your damage from Mystic Shot . With Tear of the Goddess and Sheen , you can spam Mystic Shot and do so much damage that your enemies will probably start flaming you in chat for abusing Ezreal.

TRINITY FORCE BUILD

This is usually your go-to build when they have many easy-to-kill targets and not a lot of tanks. With your Essence Flux and Mystic Shot together, you can almost deal at least 50% of the enemy's total health. This build has the highest DPS (damage per second), but be careful as you are still fairly easy to kill if the enemy team has many ways to get to you.

• Trinity Force will be your first item, as it gives every single stat Ezreal wants. Ability Haste so you can spam your abilities; Health to prevent enemy assassins one-shotting you. Most importantly, the Spellblade passive will allow you to deal an absurd amount of damage with Mystic Shot .
• Manamune , after transforming to Muramana , synergizes perfectly with every one of your abilities by allowing you to bonus damage.
• For boots, I prefer Gluttonous Greaves , as it provides me with extra healing on Mystic Shot and attacks. Ionian Boots of Lucidity is also fine if your main goal in the game is to poke the enemies. Enchant with [quicksilver sash] if they have a lot of crowd control or [zhongya's hourglass] if they have assassins or divers such as Zed , Camille or Akali .

BLUE EZREAL BUILD

I like to call this build Blue because, well, your core items are all blue. This build is the one I prefer in most scenarios because of the current meta. The best champions right now are pretty much all ENGAGE champions such as Alistar , Leona , Camille , Darius , Malphite or Akali . If you don't want to instantly die in a teamfight or want to counter a full AD enemy team, then this is the build for you. Blue Ezreal strikes a perfect balance between survivability and damage output. You will deal tons of damage to both tanks and squishy targets.

• Instead of Trinity Force , build Iceborn Gauntlet as your first item. While it won't offer you as much damage, you get armour and an AOE slow instead, which allows you to peel yourself from Darius , Camille or any other champions who want to dive on you as soon as they see you. 
• Muramana will still be your second item for the same reason as the Trinity Force build.
• For boots, look for [ninja tabi] or [mercury treads], because your main goal is not to heal or spam abilities but to survive the enemy's engage. Enchant with the same enchantments listed in the Trinity Force build.

Why no Blade of the Ruined King and also WHY Liandry's Torment ????

At first, this might seem like a totally ridiculous troll decision. However, as we dive deeper into the maths, it makes more sense. Blade of the Ruined King allows you to deal 6% of the target's current health as bonus physical damage whenever you hit Mystic Shot . This might seem good on paper until you realize the bonus damage will likely be mitigated by the huge amount of armour the enemy will have. Keep in mind; we are likely dealing with many bruisers and tanks who love Sunfire Aegis and Thornmail . Blade of the Ruined King offers great damage early game, when the enemy does not have a lot of armour. However, building it as a third or fourth item will likely be too late to be effective. This is when Liandry's Torment comes in. Not only does it allow you to deal 10% BONUS DAMAGE simply for being in combat, its passive also burns for 1% of the targets MAXIMUM HEALTH as magic damage. This is huge, as it allows you to counter tanks with the maximum health damage effectively and, at the same time, circumvent the heavy amount of armour they will build. Yes, Liandry's Torment is usually bought by mages and only offers Ability Power. However, ALL of Ezreal's abilities scale with bonus AP, especially your Essence Flux and Trueshot Barrage . In most cases, you will likely deal way more damage with Liandry's Torment instead of Blade of the Ruined King . By the way, you can also go Liandry's Torment with the Trinity Force build if you wish!