Welcome to my first guide for League of Legends. I don't want to make this too long but I have all the needed info here ask if you need more help.
Please give me any Constructive Feedback or any misatakes on the Build/Guide

+ Deals lots of damage late game and early game
+ High chasing capabilities against almost all heroes
+ Can take down buildings easily
+ Can Gank and Backdoor easily
+ Can escape easily
+ Has a Damage Steroid (His E ability)

- Squishy Character
- No Disables
- Very Item/Money Dependent

When playing Master Yi you want to farm as much as you can. At the end of the game, if you played him right, you should have most farms or near to that. What you want to do is last hit the creeps in your lane, and use your Alpha Strike to farm up your minions. Though you don't want to spam your Q too many times. At level one you will be weak at farming, but by level 2 or 4 with ur Wuju Style leveled up it becomes easier to farm since you have bonus damage.

I personally like to use the summoner spells:
Exhaust : When sometimes you are chasing someone and you maybe can't catch up fast enough use this to slow them down. Also you can use this when running away for it slows AND makes them deal less damage.

Ghost : I use it to either run away or to catch up when i don't have highlander available

Cleanse : You can substitute Ghost for this because when your are stunned or anything of that sort you are completely useless and vulnerable. So you can use this to get back into the fight.

When ever I engage against another character/hero I always Alpha Strike in and then use my Wuju Style followed by Highlander . I would then chase them down and use Alpha Strike whenever I fall behind or get a chance to use it to catch up a little. Although if you played him right you should not need to use your Alpha Strike to catch up.

Berserker's Greaves For Movement Speed and some Attack Speed
Phantom Dancer x2 Good amount of Attack Speed and LOTS of Movement Speed to run like the wind. Also Provides quite a lot of Crit Chance
Infinity Edge Provides LOADS of damage and Crit Chance. Also its unique passive gives you 250% Crit Damage instead of 200%!
Bloodthirster for Quite some amount of Damage and Lots of Life Steal so you won't die easily. It also has a Passive where when you get one kill you get 1 extra damage and 0.25% of Life Steal and you can stack it up to 40 times! That is 100 Damage and 25% Life Steal in all!
Youmuu's Ghostblade For some Crit and Damage. Also its Activate can help you in chasing and running away.
Warmog's Armor Get this if you are dying too fast and need to get more beefy.
Atma's Impaler This is a good items to get if you have Warmog's Armor or any other HIGH hp item.
Thornmail If you think health isn't going to be any good get this instead. Currently it has the most Armor in game and also it gives you a small edge if you are 1v1 against the enemy DPS/Carry



The Second Build:
This build is for if you are not as good late game and need some beefyness to your champion. Although you are not as strong this help you survive longer. You can subsitute Atma's Impaler for a Thornmail

Some Characters you want to lane with is:
Sona She can Heal you plus her Auras can help you a lot.
Soraka She can Heal you and Help give you mana when you need it.
Cho'Gath He can Slow them and knock them up into the air. He can also Silence
Taric He can Stun and Heal you.
Nunu & Willump He can Slow and take lots of damage for you.
Anivia She can Stun and she is ranged.
Rammus Rammus can Q right in and taunt. He also does high damage for a tank due to his passive.

Sometimes in early part of the game you find yourself being chased to your turret. When they start getting hit by the turret try to time your Alpha Strike right when hes about to die therefore you get the kill and survive because he can't hit you when you are using your Alpha Strike. But be careful sometimes there health is too high for you too kill him and instead you die so care when trying to do this.

Try not to initiate any fights or you will die easily get your tank to attack first and go for the squishy guys on their team and try not to Alpha Strike right into them.

If you do not have a jungler feel free to take the jungle buffs (Red and Blue)
If you DO have a jungler ask for permission to take them or take one.

Get dragon when you can 190 gold is not much but really for the whole team its quite good. You never know when you will need that extra gold. You are also one of the best Champs able to dragon early on and that can be a game changer.

When you find your team losing in turrets or just losing in general, try to bd some turrets. One time we were losing I went and bd some turrets and that led to us being able to eliminate them after a few more pushes.

Ranked eh? Although this champion has quite strong abilities he is really focused onto DPS DPS DPS. I suggest you try Tryndamere or some other more "effective" or more "utilitized" Champion. This build could work for ranked play though be careful and build more to the safe side.

I will post my Game Scores here using this build with Master Yi

Score Result

19/5/1 Defeat
7/3/6 Victory
26/10/10 Victory
17/8/10 Victory
14/4/7 Victory
14/9/8 Victory