This is a build on how i like to play Nocturne in dominion. This is my first build so feedback would be nice ^^

I chose these runes because Nocturne with a good amount of Attack Speed and Crit Hits is a sure win!
Greater Mark of Alacrity
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These are great for giving your attack speed a healthy boost.
Greater Seal of FortitudeThese are to boost your health so you can take some more damage before having to Recall or before you die.
Greater Glyph of FocusThis cooldown boost will reduce how long you are waiting for your ult which is extremely effective in 90% of cases
Greater Quint of FurorThese crit hits damage will help you deal a hell of a lot of damage almost effortlessly.
Greater Quint of AlacrityThis one is purely just for some extra attack speed, every little helps :D

this build of items is what i use for insane amount of damage and attack speed with some crit hits in thier for that added damage, this build can be applied to just about any AD champ for dominion.
i useually keep my Prospectus Blade up until i have purchased my Sanghuine Blade.

The reason i max out Shroud of Darkness first is for the bonus Attack Speed it gives is a great help through out the game.

The way i like to use my skills is start with a Duskbringer for a good amount of damage and the bonus movement speed incase they try to run, then i would hit them with a Unspeakable horror while hitting them with a basic attack, if things get a little close i will use Shroud of Darkness just to hope for an ability for the doubled Attack Speed.

or if my ult is ready i will use that to fly in n hit a large amount of damage followed by duskbringer when ever i can and a Unspeakable Horror, making use of the fear it gives to really hit them hard with basic attacks.

I use Ghost and Exhaust because they are exetremely useful for joining or escaping team fights and for chasing down an enemy in a one-on-one situation.

All in all Nocturne is a great champ for dominion and once you have your Phantom Dancer kills should come quickly and effortlessly.
thanks for reading :) please vote comment and give me your feedback and ideas :)