Master Yi's build:

Starting Items:
Boots of Speed , 4 Health Potions.

After Starting Items:
Berserker's Greaves, Youmuu's Ghostblade (YMG).

Mid Game Items:
Statikk Shiv, Infinity Edge (IE).

Late Game Items:
The Bloodthirster (BT), Phantom Dancer (PD).

Very Late Game Items (Choose):
Ravenous Hydra (Melee Only) )(Hydra),
Frozen Mallet (FM),
Blade of the Ruined King (King).

Extra Items (Choose Possible) :
Berserker's Greaves - Furor or Berserker's Greaves - Homeguard.
5 Health Potions, 5 Mana Potions,
5 Sight Wards, 5 Vision Wards,
1 Oracle's Elixir, 1 Elixir of Fortitude.

Playing Yi Attack Damage [MELEE] Carry.

1. Put your {ACTIVE} YMG at your '3' buttom for pressing your '3', 'R' at the same time!

2. Ask if the support player will be: Leona, Blitzcrank, Thresh, Lux or Janna.

3. Hit the nearest minions near your enemies. (Minion number 3,4 or 5).

4. If you have a Fiora in your team, try to get fed by your enemy, because Fiora is also a champion like Yi.
Very strong, carry and you can kill your enemies by your own.

5. Take 'Destruction' in your Mastery Page. You will push harder, easier and better.

6. Sell your boots when the match is too long and you have full build.
Take an item of the [Very Late Game Items (Choose)] list.

7. When you want to kill an enemy, active your YMG, your 'E' ability and 'R' ability.

8. If there is a teamfight (TF), don't go as first. Wait for your tank and support.
Go in when they are appeared. Active your YMG, 'E', 'R'. RUN WHEN YOU DON'T TRUST IT ANYMORE LONGER.

9. You don't need that much of farm. You will farm champions, if you play good enough.

10. If players are hating, just lock-in and play!

And remember: The hate at Yi is lovely!

Thanks for reading the Master Yi Guide.

-Gryffixynx.
Main-player of Yi.