This is a nice tanky build for Nocturne and my first build on mobafire :D I hope you like it. Some people say that Nocturne is OP so I think with the next patch there will be a nerf on him. Probably reduced damaged on Duskbringer and something with his ulti. So i will probably need to change some thing on this build after the new patch

Pros:

High damage at early game
Great carry
Great laner
Not team dependent
Easily wins 1 on 1 fights
Easy getaway

Cons:

Fast out of mana in early game (I suggest Clarity)
Fail usage of Shroud of Darkness
Bad farming
No getaway (I suggest Flash)

Marks and Quintessences for armor penetration, Seals for armor , Glyphs for magic resist. The mana regen is good for Cons in early game that run out of mana fast. The armor penetration is great for first blood and early game. Armor from seals is also great in early game for reduced damage and not being focused as the first blood victim the same as the magic resist.

Greater Mark of Desolation
9 Greater Marks of Desolation (14.94 Armor Penetration)

9 Greater Seals of Resilience (12.69 Armor)

9 Greater Glyphs of Warding (13.41 Magic Resist)
Greater Quintessence of Desolation
3 Greater Quintessences of Desolation (+9.99 Armor Penetration)

23 0 7

We want to do add as much as possible damage with masteries. Taking only 7 points in utility for increased experience and increased mana/health regen.

You might think "Why the mastery point on Ignite, it gives only 10 Ability power when its on cooldown???", that is for first blood. (Read later under "First Blood Help")

Very expensive full build (over 16000 gold), but you are on high health and high damage with 4 or 5 items from the full build (about 7000-10000 gold for that)
I don't suggest following the item buy sequence 100% the same. In some situations you will need other items like in this cases:

Feeded high damage champion?

In this cases its mostly a Tryndamere or a Xin Zhao. We want to reduce that but how? I suggest buying a Thornmail or a Guardian Angel or both. The extra armor does wonders in a 1v1.

Feeded ability power hero?

It's either a Katarina or a Karthus mostly. In this cases they're ap is over 500 or 600 it will still do a lot of damage that's why we want to give Nocturne much damage and magic resist buying a Quicksilver Sash and/or a Guardian Angel will make them run from you.

As you see i max Q first, E second and W last(R on level 6, 11, 16 like most champions)

Q is your main damage source and we want to have it at max damage early. The extra movement speed on the trail is great following on your target and cleaning up minion ways together with your Umbra Blades, makes Nocturne a great carry. We will use this as a getaway in combination with your other spells. Like your W that avoids a spell. Nocturne is a getaway god for me, so much time on low health and so much times getting called a lucker.

E second it does magic damage and it fears your enemy and is a great CC(Crowd Control). But why on level 1 and not Q on level 1?(Read "First BloodHelp"). It won't do that damage but it's great on finishing of other champions.

W last. We will use this mostly only for defending and sometimes on destroying turets. This with combination with Banshee's Veil makes you hard to damage even on 1vs2 or 1vs3(Imagine the frustration of the other players seeing you avoid they're ultimate)

And

Great for first blood and finishing off other champions.

For cons



Early game low mana? Use it to refill.



Still didn't learn how to use Q,W,E as getaways? Flash away!

Nocturne can get easily first blood. That's why I use Exhaust while hitting him get him with Ignite and use your E to fear him and last hit him. Because of the Masterie point on Ignite it will give you +10 ap while its on cool down so your E will give 10 extra damage giving you more chances to get FB on a 2 vs 2 (lane on 5v5) or 3 vs 3 (on bot on 3vs3). Don't forget even if u die and get FB on 1v1 you will get 100 more gold then your enemy that gives you a little advantage.

Low on HP but got mana?

Use your W to avoid any stun, slow or anything else then use your Q to get extra speed. If his still after you fear him with your E and he will just watch how he you are running away.

Low on HP and mana!?

Hope you get enough mana for your W to avoid at least 1 atack. Hopefully there will be a turet or a team mate near you to help you out of this situation.

Else...

Nocturne is very useless with no mana like all other mana champions. Recall or use mana pots or clarity if you get low on mana. With no mana you will be a easy target to others even with full HP.

I will add more soon.