Hi, i am WhiteStorm. Im from chile so please, PLEASE sorry if my enlgish sucks :P
Im not the best player in the world or a diamond player because i like play a little troll, searching new forms to play trying to create an op build and strategy. In this search i found this build, The red Mf build, the counter of the most ad champs, u shust need to think in her pasive and the thornmail a exelent combiation.
if u are thinking "WTF!?" let me show you a picture.

Usually i have that score when my team dont feed some champ like Rengar or Jax.

So if you are interested, please see this guide.

Pros
Very powerfull.
You are the counter of the all adc's in the game.
you can fight a 2 vs 1 easily.
playing smart and doing a good ulti the team fight always be great
You can do the ultimae under enemy tower with no problem

Cons
You MUST play smart
Is a paper vs powerfulls AP carry's
YOur team probably will be a little annoying saying to you...some word XD

Why I Think that this build is good?

Because the active of the W and Thornmail is a exelent combination, the enemy dont have a good life steal in the 1 vs 1 and they powerfull atacks.

in the team fight the zeke's herald is OP, the top and the jungler will resist more with the life steal that this item give. In the moment of the ultimate.

the other items are widely used to say something XD

possible cases:

A partner is about to die:
WIth your zeke and your high damage u should do de 1 and 1/2 vs 1, the life stel that you give will have the partner alive.

Team fight:
In the team fight you have to be in the sides, not where your companions are, since they will not do you the focus and you will have a good angle to do the ultimate.

well thats all, the rest are in your imagination.

ALWAYS PLAY SMART, PLAYING DIFERENT YOU WILL WIN