Hello everyone my name is ninjakc, thanks for spending your time to read this guide. This is going to be my first guide so there might be some mistake. But before I start explaining, I have some stuff to talk about. First of all encase you don't know Lee Sin is a melee assassin/fighter with high mobility and with this build you can also help your own team ward up the enemy jungle with the Sightstone and also do crazy escape trick when get caught in a bad situation.

Pros

• Very high mobile champion.
• Almost impossible to gank.
• Have very good escape.
• Can ward up enemy jungle for the team.
• By doing the Insec ward-jump, ult, you can kick your opponent backward to your teammate or tower.
• Enemy is hard to escape from you.

Cons

• Hard to get a come back if you get shutdown early.
• If you run out of wards, teammate might leave you behind and not let you Safeguard to them.
• Ulting might kick your enemy to the wrong direction.
• Falls off late game.

• This mastery can help you do ton of damage but also enough defense to keep you alive.

Offensive Masteries

• Double-Edged Sword : Deal 2% more damage but also revive 1% damage.
• Fury : Give you attack speed.
• Sorcery: Give you Cooldown Reduction.
• Butcher : Let you last hit better.
• Brute Force : Give you attack damage per level.
• Martial Mastery : Give you +4 Attack Damage.
• Warlord : Give you bonus Attack damage.
• Devastating Strikes : Give you armor and magic penetration.
• Havoc : Give you +3% increased damage.

Defensive Masteries

• Block : Reduce incoming damage from enemy basic attack.
• Enchanted Armor : Increase bonus armor and magic resist.
• Unyielding : Reduce incoming damage from enemy champion attack.
• Veteran Scars : Gain health.
• Juggernaut : +3% Maximum health.