This is my build guide for Lee Sin.
Hope you like it :)


(First build gude)
*EDIT*:So i noticed negative feedback and realised that my build had something wrong so i changed it :)

Lee Sin is my main Champion.He is a monk with op mobility which makes him a great jungler.
Mastering Lee Sin takes time becouse he is one of the hardest champions in LoL so take your time with him and dont throw the champ if you fail with him the first few times :)

Marks:I take flat ad damage marks for good early game damage becouse Lee sin has a very strong early game so why not make it even stronger ? :D
Seals:I take armor seals,well becouse we need armor not to die in a second when the enemy engages you :)
Glyphs:Same as Seals we also need Magic resis becouse lee sin is a offtank who needs both deffence and offence :)
Quintessences:I take 1 flat ad Quin's so we can deal more damage and 1 armor pen.quinn becouse well with all that dmg we can also use one armor penetration Quintessence
Also 1 flat magic resist Quintasence becouse lee sin with this build we got a lot of armor but not so much magic resist..

The jungle masteries are 21/9/0.
I take 21 points in offense to pwn the monsters and for more early game damage becouse Lee Sin has a great early game and like i said why not make it better? :D
9 points in Defence so that the monsters in the jungle dont kill us at LVL 1 :)
And 0 points in Utility becouse as a Energy user in the jungle we don't need that.

As for top we're gonna take 9/21/0 to be more tanky while doing good dmg :)
9 points in offence becouse for top we wont need all that much damage from the masteries becouse lee has great early game poke and dmg.
21 points in defence becouse when on top we will need more sustain
And again 0 points in utility becouse we dont need that..

Lee Sin is also a very good support :)
Masteries for support are 4/12/14
A little CDR,Some tankyness and some utility with these masteries

Flash
Flash is a great summoner spell for lee sin becouse when you gank you will find your'self in troublesome situations a lot of times from which the only thing that can save you is flash.Lee Sin has great mobility for catching up to players and runnig away so Flash makes that even better :)
Smite
Well nothing to say much about this, this spell is a must-have for every jungler so that includes lee sin too
Ignite
When playing top you also take Flash and since you have good mobility and tankyness you will need Ignite to finish off running enemy's or just use it in a fight so that the enemy cant heal with lifesteal or heal abilities ( dr.mundo Nasus Volibear etc.. )
Exhaust For support we take Exhaust becouse well it is a very usefull spell for every support xD

Jungle items:

Mercury's Treads Great item for lee sin since it gives tenacy and magic resist

Wriggle's Lantern A must have item for every jungler and the ward makes it a unique item for lee sin.But late game you will sell it to make a stronger item for your full build

Black Cleaver A item that gives you health,CDR,Attack damage and armor penetration.Excellent item for lee sin becouse it gives you everything you need.

Blade of the Ruined King Gives you good attack speed/lifesteal and attack dmg + a epic active/passive.A very good offensive item for lee sin

Locker of the iron solariWith the changes on it it is a very good item for lee sin since it gives excellent defensive stats + a good AOE shield

Bloodthirster +100 damage and good lifesteal.A excellent offensive item for every bruiser champion like Lee Sin

Randuin's Omen Gives you great health and armor.A excellent item to finish your build.

TOP ITEMS:

Mercury's Treads, Ruby Sightstone, Ravenous Hydra, Black Cleaver, Blade of the Ruined King, Locket of the Iron Solari, Randuin's Omen

As for Mercury's Treads, Black Cleaver, Blade of the Ruined King, Locket of the Iron Solari, Randuin's Omen
The items we are changing in toplane are Bloodthirster and Wriggle's Lantern with Ruby Sightstone and Ravenous Hydra

Ruby Sightstone This item gives you early tankyness and a lot of wards which you need to have good map control on top lane and get away with ward jumps from your W

Ravenous Hydra Same as bloodthirster this item gives you lifestal + damage but this item gives you AOE dmg with your auto-attacks so it offers you FAST waveclear,and will make you more useffull in teamfights

As for support you have got Mercury's Treads, Ruby Sightstone, Locket of the Iron Solari and zeke's herald as core support items and you can choose 1 Tank item and 1 Offensive item.I preffer Randuin's Omen and Ravenous Hydra

Pros:

Cons: -Is kinda squishy -Fall's off late game -hard to master -expensive build -Lee Sin is blind :( +Very fun to play +Has 6 spells +Has energy so you will not have mana problems +Great mobility +Good ganker and jungler +OP earlygame

Well that's all i can tell you for now.This is my first build guide and i hope you will like it and it will help you out.
Rate and comment and see you out on the FIELDS OF JUSTICE ! XD