First of all, sorry about the bad english, im brazilian im not THAT good in this language.

"Before Nocturne, people believed that dreams were figments of their imagination, meaningless images that flashed through the mind when one slept. (...) Some would wake up screaming, terrified and beyond consolation. Some could not fall asleep, slowly going mad as the nights ticked by. Some simply never woke up. (...) Witnesses said he cried out once and then stopped breathing. Immediately after, magical energy arced out from the nexus, and Nocturne appeared."

Ok, nocturne is my favorite champion, why? You are good from the beggining to the end of the game! And you dont need so much expensive itens, if you want, good for you, because nocturne is an excelent farmer!
Using Duskbringer on minions and after use Umbra Blades You can easyly kill all the minions at one lane (: get high gold to finish your build faster!

Thats all, everything is on the rest of the post...

''The darkness is closing in...it's pitch black now...but I can still see him...''

Pros:
Very good farmer
Very nice on a x1
Block spell ability Shroud of Darkness
Fear ability Unspeakable Horror
Nice lifesteal
Very high attack speed and damage
Nice ultimate Paranoia
Easy Tower push (With Demolitionist its better than never]]

Cons:
Not so good on a gank
Easy to kill if feared
Very easy to be killed, what saves him on x1 is his lifesteal and high ad

Why Greater Mark of Desolation and Greater Quintessence of Desolation
Nocturne is a killer that uses mainly his attack damage.. so if you are about to fight against a Rammus with 100 armor, isnt good to reduce this armor to 50? Its possible! See his armor penetration, its 44,93, but if you put some different seal it can easyly pass through 50

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Seal :)

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Why Greater Seal of Critical Damage ? There's NO REASON FOR IT!
There are no good seals to Nocturne, i prefer Furor because it gives me more critical damage, but you can take a Greater SEAL OF DEFENSE for exemple that works too =D

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Glyph :)

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Why Greater Glyph of Critical Damage ?

For glyphs i prefer the Greater Glyph of Critical Damage then + Greater Seal of defense and Infinity Edge my critical can go near 1000 ;)

I dont have to say nothing. I think everyone agree with he Mastery Tree!

Ohh.. may Demolitionist would not be necessary, but Nocturne can push towers easyly.

First iten: I pick Doran's Blade instead of Doran's Shield but it depends on the enemy team, if there are more mages, like Fiddlesticks, Karthus and so on... i pick dorans blade, but if there is a Tryndamere or something near, i pick dorans shield

Boots: I think everyone agrees with Berseaker's Greaves, it gives Nocturne a high attack speed, and this can be very useful against Jax for exemple.

Why Frozen Mallet ?
A lot of people use and its very good, you earn health (nocturne has few health), you earn some of Attack Damage, but Noc has it a lot, but the more increadible and necessary: you reduce the targets Movement Speed
YES! I Hate when Tristana jumps away, when Teemo runs, when Alistar / Poppy knock me back and I can block! Nocturne can take them when them do it when they are slowed! Its necessary!

Ohh, you should have seen i have all focused on critical strike! Yes, maybe with some Runes and itens i can get Critical Strike Taking away 1250 of life always (: I love Nocturne

Duskbringer first! ALWAYS! It avoid your enemy to scape while you earn some extra Attack Damage, After Unspeakable Horror To fear your enemy while you kill him!

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Ok, i ulted, and know?
After using Paranoia always use Shroud of Darkness to block!
ALL enemys get scared when you jump after them and uses his skill (Like Tristana or Alistar 's knock, Teemo 's blind, Amumu 's stun or Taric 's Stun... WHATEVER) to avoid me, block the skill and the kill is yours!

Exhaust and Ghost

I always use them and they are Wonderful!
Why?
Because I can use both to attack and to run:

You gotta attack someone but hes running! Exhaust him!
You are runnning away but he's is faster than you! Exhaust him!
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You gotta attack someone but he flashed away! Ghost and run!
You are running away but he's about to use a spell and kill you! Ghost and run!

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What other summoner spells can i use? I dont like Exhaust or Ghost !

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Clairvoyance is always good!
-YOU: But VitimaX, Clairvoyance is for supports

God dammit! I used Paranoia but who i want to kill is in the darkness! I cant see him!
Use Clairvoyance my friend!


Flash is the same as Ghost and Exhaust, use to attack or defend! Remembering you can flash through the walls (:
But i do not use so much flash, i prefer Ghost


It's good if the one is near the tower and with low health, you can't get him.
Or if you are dying on a x1, use this and, if you die, you can still kill

DO NOT USE


First: 9 Minutes cooldown
Second: Nocturne must not die that much, so it's not necessary


Why not? It's useless, you have so many others to use that are better!

DO NOT JUNGLE WITH THIS BUILD!


I always HATED jungling, in the lane you have your partner's help (i also hate soloing), the tower's help, you can take away the enemy's tower, you have more minions... etc!
In the jungle you have difficult minions (and few), no help, and the possibility to find an enemy gank against you!

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CREEPING :)

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Nocturne is a PERFECT farmer:
Using Duskbringer on minions and after use Umbra Blades You can easyly kill all the minions at one lane (: get high gold to finish your build faster!

One photo to you analise:

Please see somethings:

Turrets destroyed: 6 (Nocturne kill fast and also destroy turrets faster than ally champions)
SEE THE DIFERENCE: between damage dealt and damage taken, its even bigger between the AD damage done and taken.

THE END! Now you can play with nocturne and be happy!