Ever got tired of those damned rational players that buy Thornmail or a Force of Nature and just by that completely desabling you? Fear not, for those days are at an end!
This build is for anyone who likes tougher champs, like me. Never again be eaten in a frame of second, become their worst nightmare!

Pros:

>Tough .
>Can own tanks in seconds .
>Stylish as hell.
>Noone can run away from you with Frozen Mallet.
>Killing machine with neutral monster buffs, while not being total dependent on those to make a show.

Cons:

>Is still a Master Yi, so you are gonna
be real squishy till midgame.
>Not tough enough to withstand larger scale fights, but can get a nice two or three kills along the way.
>No cc's without good comrades or Frozen Mallet.
>That's about it.

Since people most time seem to forget about magic resist and only buy armor, we should get some magic Penetration; and being the tough motherf***ers we are, we are gonna want some armor and magic resist, topping with a little extra health; We are now making our way to the elevator to awesomeness.

Start with Alpha Strikeand max it by level 9.
Do not level your Meditate without maxing the other skills. Never. Unless you are getting killed by an AP Ashe, then you should do that, and also go back to playing minecraft.

Aim for the armor penetration and magic penetration, again with nine or more points in either defence, aiming for health, or support, to get the buff duration.
This will let you to achieve reasonable damage while staying hard to kill.

Well, here you can use one (or both) of two ways:
The "I dont give a **** and gonna waste all my mana to kill the whole lane and harass a bit" way or the "I wanna play safe and last hit with Wuju Style and be careful for the jungler not to eat me while im attacking their turret" way.
Being the first mastering Alpha Strike and spamming it like a boss but having to go back often and the second mastering Wuju Style and stay defensive while gettin some gold.

Good spells:

Flash - always a good one for any champ.
Ghost - mix it with your ult and go for the double kill.
Cleanse - get rid of that exhaust or stun those bastards used on you and go for the triple kill.
Teleport - along with some wards around the map and you are the perect ganking machine.
Ignite - good to get rid of those flashers like Kassadin, or breaking the defense of a strong tank, like Taric.
Surge - gives you the upper hand against those stronger types.
Clarity - good for farming and stays useful the whole match.

Dont get these spells:

Garrison - come on, you are an assassin, leave that to the supports.
Smite - no jungling for you, little queenie.
Clairvoyance - useful, but why get it if your Soraka is a pro?
Revive - why?
Heal - just not the thing for you.
Promote - you can waste your spell slot with anything and it would still be better than this.

Start up with some ap and a Health Potion, you can get your damage later from [wuju] and heal up with Meditate.
Get your shiny little Boots and finish your Malady. At this point you can kill the golem and the lizard elder easily.
When you get a little fed, finish your Boots of Swiftness and build Wit's End.
Its been proven that malady + mdr is just as effective as, or sometimes even more effective then Infinity Edge + Phantom Dancer.
About now you must be feeling a bit weak, letting yout targets escape and all; its time for Frozen Mallet, finish that as soon as possible.
Finish Madred's Bloodrazor just so their tanks start calling you names.
Now its endgame, you want to kill everybody and stay up in a fight even if its a 2v1; its time for Phantom Dancer, that beauty is gonna buff you up so hard their carries are gonna beg for mercy.

Never forget to warn the laners before you gank, getting a good cc on the target is key to killing him. Stay out of sight of their initiator, or aside from the lane when pushing so you can later surprise the enemy team when they are supressing your team or when their cooldowns are down; you are tough, but not unkilable.

This is my first guide, so have pity on my soul for it not being perfect ^^
This guide aims to making you a more durable fighter being able to kill their tanks and give the upper hand to your team in a teamfight while still staying alive to get their base down.
There is no need for lifesteal/spell vamp with this build since we are aiming for more stable fights; also, with your Meditate, its all fun and games.
This is a specially good build in dominion, making you able to take a point and make a run for it while staying alive and buzzkilling possible defenders/gankers.

Please do leave constructive critcism and/or share your love(or hate xP) in the comments below, all help is welcome. ^^

Later on the same day: Made the guide actually readable, fixed the builds and it's all working nice now.