I'm saying it RIGHT NOW, this is a SPECIAL BUILD that I'm presentating, it have NOTHING TO DO with thoses classics one. So don't flame or downvote cause "haha noob, you make core sword of occult". If you want to know why I made this build check Item Explanation. Also don't downvote before trying it : you'll see it really work.

AoE = Area of effect ability (Can hit multiple targets at once).
DoT = Damage over time.
Blue = Blue buff, obtained by killing Ancient golem jungle (Helpful for AP carries standing in Solo-mid).
Red = Red buff, obtained by killing Lizard king in jungle.
CDR = Cooldown reduction.
CC = Crowd control (stun, slow, snare, fear, knock up, taunt, suppress etc.).
Root = Snare = Being immobilized.

Jungle = space between lanes, occupied by neutral creeps.
Gank/Ganking = Quick action leading to advantage (1v2, 2v3), mostly performed by Jungler.
Farming = Obtaining gold from last-hitting enemy minions.
Last-hitting = using autoattack on enemy low-health minion to obtain gold from. (Tree with last-hit priority: AD Carry -> AP Carry -> Tank -> Support).
Pushing = Quickly killing enemy minion waves to get your own minions to enemy turret.
AD carry = Champion using his autoattacks (and AD-scaling abilities) as main damage source.
AP carry = Champion using his abilities as main damage source.
Tank = Champion who is built to take big amounts of damage.
Jungler = player/champion using jungle to obtain Gold and Experience.
Fighter = Usually AD based champion with better survivability than normal AD carries.
Support = Champion who is helping other teammates (Giving them possitive auras, Healing them, shielding them etc.).
Aps : Attack per seconds.

There's still Google, if you dont know something.

Here I'll talk of wich Champions is good with this build and who aren't. I'll also explain why.

Good champions :

Champions who aren't as efficient as the others :

Why this build ?
First of all, this is a special build and has nothing to do with the normal, classic build. I was just wondering how to fast finish bronze game and found this build who was so awesome.

First of all, Sword of the Occult is the most important part of this build. It is an incredibly good item to snowball, it's innexpensive ( 1200 gold ) and if you start with this one you can easily end up with 2 destroyed turret before back cause of your attacks increasing at the same time. Also if at a point of the game, the Sword of the Occult became useless cause you can't stack it or you die too much SELL IT and replace by a Last Whisper or a Bloodthirster.

Then you should go for Zephyr, this item give an amazing attack speed, it also gives movement speed and tenacity. His price is not so big for what he gives and is perfect to snowball. I often ended up with only Sword of the Occult, Zephyr, Berserker's Greaves and Vampiric Scepter wich is 6000 gold worth only.

After Zephyr you can go for Bloodthirster, it gives a lots of damage at this stade of the game and could save you if you begin to die too much and lose stacks from the occult. It's also the part of sustain of this build.

You can also rush Infinity Edge after Zephyr, if you need critical earlier than you thought or if you feel comfortable. It gives the famous 250% critical, a good amount of damage and some critical chance you need.

You can do it as the 3rd or 4st item, the Trinity Force is an awesome items, more attack speed, more damage, critical chance, movement speed, health and mana ... It fits perfectly with the rest of the build.

It's pretty simple, on my build we have three items who give movement speed ( Zephyr, Trinity Force and Sword of the Occult if fully stacked ) with a fast calculation :
10% + 8% of 300 give around 60 movement speed wich is more than the boots gives.

Then replacing boots is worth and the only way to get a real working build on late game because the big problem of this build is his squishyness.

At this point I'll recommend a DEFENSIVE item, but if you're against low player, or if you're real sure of yourself you can take an OFFENSIVE item. Here is item I recommend :

It's a good item against bursty or poky champ due to the health and regen it gives. I often take warmog myself and it work perfectly. You end up with 456 attack damage, 1+ Atk/s and 3000 hp.

It's one of the most OP defensive item for AD carry. Guardian Angel is good vs. Bruisers & Nukers. Having the extra resistances help against that burst. Additionally, the revive every 5 minutes helps clean up team fights.

Not the best item to take, it gives a nice slow debuff, an enormous amount of health, and a paltry amount of damage. But because of red buff, and maybe slow ability from the champs ( Like Venom Cask from Twitch or Ashe arrows ), I usually feel as though there is enough slow. Nonetheless, the large volume of health this item yields makes it viable to somewhat countering an AD heavy team.

It is inexpensive, gives you a small amount of AD, but is effective at what it does - it helps you shred tanks. It makes the armor stacking they do next to useless. It's very usefull and could be picked instead of the Sword of the Occult if the ennemy are stacking armor.

I remember that this stuff is OP only if you gets kills ! It works cause of the movement speed it gives and the amazing DPS it gives so fastly.

So here is 2 games in a row I made this morning :

On the first one you can see that even if you get 4 kills it still works well, and on the second you can see the ability to snowball it gives, so OP.

I'll try to post the videos of theses two games if twitch.tv want to show me the url of the videos I recorded.

Some other examples not by me :
From a bronze II