This is a guide for Fiddlesticks, i have been playing Fiddlesticks for a long time now. I could say that this may be the best i could come up with. Whenever i go Fiddlesticks the chances of losing is just 15% with this build. If you continue reading you may learn the when and why some of the items for the build change. And also you might see wrong grammars and misspells -- dyslexic.

I get a lot of MagicPen for fiddle so i could focus on the CDReduct instead and on the Ability Power.
I get Mark of Insight , Glyph of Insight and Quint of Insight gives my Fiddlesticks about 20Mpen. And the Seal of Clarity is well, self explainable .

Jungle Runes:

Greater Quintessence of Potency
Greater Mark of Insight
Greater Seal of Force
Greater Glyph of Force

Now if you wont do the 9/0/21 mastery build for Fiddlesticks then you fail.
Quickness, well because fiddle is too slow. CDreducts for the summoner spells because they go great in ganking. E.g when a turret is unguarded and there's 2 champs about to push, before they go near the turret TP there, then hide on brush - use SS fear of them by 2 seconds all the minions are dead and the turret is focusing on the terrified champ. Flash if needed and voila !

Jungle Masteries:

I start with Doran's Ring -- then build kages lucky pick. But if im already lvl 6, i build the Inionan boots first. Then just follow above items.

Jungle :
Every time i jungle i start off with
amplifying tome and 1 hp pot.
i build the Sorcerers boots instead of inionan -- since you have little Mpen.
Now you could either get Meki Pendant or Dorans ring for a little mana regen.
Or you could farm till you have enough for a rabadon Dcap and/or Zhonyas - vice versa. Get a zhonyas if the opponents are a bunch of turret huggers and aggressive turret divers. (Fear Zhonyas-- depends on the health and stuff.)

Lemme just get this straight.
build rabadon dcap -> build zhonyas later
or build zhonyas -> build rabadon.

If the opponent has some ridiculous Mresist - then go for abyssal
If you're doing fine and turret diving with crowstorm and ss. Get rylai's.

Same thing with rabadon and zhonyas.

Defense - Build either GA or Banshees

For COMBO i usually go for Crowstorm -> FEAR > DRAIN > Spam Silence

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Terrify
This is VERY usefull - i mainly use this on Tryndamere when he hits SS.
I use it to anyone who's a threat to the clash.

Drain
A great skill , will save your *** if you are dying and someone approaching you and you're from brush. Or any situation almost similar.

Dark Wind
I 100% LOVE this skill, it silences enemies, does great damage and BOUNCES 5 TIMES.
I never forget to use this , and you must too.(Times of Clash - DO NOT use this when there are still minions running around , wait till your Crowstorm has done its cleaning, then you can use it.)

Crowstorm
Now this is just great - does a lot of damage and with your MPen and Fiddles passive skill .. this goes perfect. Keeping enemies inside it maybe a problem - that's when Flash is handy. They will either run away or rape you. if they choose the second option - i suggest you either stay and do damage, let your allies finish the job OR - Flash then Dark wind .

GO FOR DRAIN - its awesome together with Crowstorm and its an offensive defense, you're doing damage while healing. Just that .. R-Q-W

The -5 bounce on Dark wind nerf made me cry. You decide if you'd go silence or drain.

When you're secure in a brush or behind the fight or behind a terrain. Never use it on a face2face, unless you're sure that guy has no CC or anythin or even Ghost , he'll runaway from the SS and Go back for the kill.

I always use Crowstorm every opportunity i see, cause the cool down reduction would help me get it back faster than it normally does. But in End-Game , NEVER use it on single target.

I always go for Teleport and Flash .
It's just perfect for my gameplay.

Smite for jungle of course.

you can change teleport to ignite if you think you're comfortable with it.

i prefer jungle -- srlsy , when you see someone bleeding , you just go fear and drain.
when you see an enemy jungler - fear and drain.

and when you're level 6 , all hell breaks lose.

when you're in middle, you're still good, but you'll be worrying about the mana if you spam alot of E.

Sorry , ranked games don't always allow fiddle.

I'm from PH by the way .. please do tell me what you think.

--> Here's my facebook : HELLO, MY NAME IS FACEBOOK

Be the guy that would finish them off for the kills and the early or mid game -- and damage them the most on the end game.

or

Be the guy to assist your team all the way with your CC - Silence and SS.