Nocturne:

So they finally came out with a champion that fits me perfectly. I've always been into all of the dark champions of League of Legends, for example all of the Void Champs: Malzahar [One of my mains], Cho'Gath, Kassadin. I've always seemed to picture a dark assassin type role champion and here he is: Nocturne, The Eternal Nightmare. He's become of my new favorites and I'm still working on different builds and techniques that work best for him. ****, his damage output is beautiful.

Greater Mark of Desolation Greater Mark of Desolation - For early and late game advantages.



Greater Seal of Evasion - Who doesn't love Dodge?



Greater Glyph of Focus - For all game advantages. Shorter Cooldowns are the best.



Greater Quintessence of Desolation Greater Quintessence of Desolation - Once again, for early and late game advantages.



Alternatives:

Greater Glyph of Alacrity - For the extra Attack Speed early game.



Greater Glyph of Warding - For the extra Magic Resist early game.



Greater Quintessence of Fortitude - For the extra Health early game.

Items to take into consideration in the proper situation:

Doran's Blade - A substitute for Sword of the Occult. [Optional]



Boots of Mobility - A substitute for Mercury's Treads if you would like to make a quicker assassination/escape.



The Black Cleaver - A substitute for The Bloodthirster. If you need the extra Attack Speed and it's Passive to cut down an enemies tanks armor.


Banshee's Veil - A substitute for Frozen Mallet. Good while facing Champions like Karthus or Ashe for their Ultimates.



Wit's End - A substitute for Phantom Dancer for the extra Magic Resist if needed.



Infinity Edge - A substitute for Frozen Mallet for the extra Attack Damage/Critical Strike.



Optional:

Elixir of Agility - For the extra Attack Speed if needed.

I max out Duskbringer first then move onto Unspeakable Horror, taking one point in Shroud of Darkness and leaving it to max out last.

- [Passive] Umbra Blades

- Duskbringer

- Shroud of Darkness

- Unspeakable Horror

- [Ultimate] Paranoia

Ghost - Great spell for chasing, ganking, and escaping.

Exhaust - Great spelling for slowing your enemies to ensure a kill and good for saving an ally or an escape. I recommend Exhaust if you aren't jungling.

Flash - As well as Ghost, a great spell for chasing, ganking, and escaping. For example: Perfect for escaping Nunu's Absolute Zero.

Teleport - Great spell for getting to an area quickly, like teleporting to a ward, tower, minion, and etc. Also great if you are soloing a lane.

Cleanse - Great spell for escaping a situation while being slowed or stunned, and etc.

I'd say this is Nocturne's best build that works for me:




Nocturne is an all around great champion in my opinion. He's probably one of my new favorites and on the road to becoming one of my mains.

UPDATED - 04/10/2011

Note - This isn't as in-depth as a lot of the guides around. I'm stilling working on it, trying out new things. I'll be sure to update quite often.

Pros:
- Great early and late game damage.

- Can push towers and farm minions well.

- Can kill a squishy enemy in a matter of seconds.

- Very good at escaping tough situations and ganks.

- Good at chasing to achieve a kill.

- If careful, great survivability.



Cons:
- Can be squishy.

- If fed, most likely will be targeted.

- Can be easily shut down and killed if you aren't careful.

I prefer not to jungle with Nocturne so I haven't given any information on jungling with him yet. I think he's better in a lane in my opinion.

This is just an example of a very short game I had while jungling: