This is a build for Nocturne- The Eternal Nightmare. This build shows you how to get a lot of Mana, AP, and Speed. That way, you are able to get a lot of kills in a short amount of time.

For my runes, I get Marks of Desolation, Seals of Clarity, Glyph of Alacrity, and Quintessence of Desolation. I try to push Armor Penetration and Mana Regen a lot.

For my masteries, I go 21-9-0, pushing critical strike, ability power, and cooldown reduction to the max.

For my items, I start off with Berserker's Greaves to get the additional attack speed so that when you taunt them, they because an easy target to a kill (possibly first blood). Next, I go for the Archangel's Staff. This way, you can get some early ability power to overcome the enemy champions with your awesome might. Next I get Guardians Angle. This is because if you get a lot of stack with Archangel's Staff, you wont lose them until your next death. Then I go for either Warmog's -OR- Leviathan. I personally like Leviathan because you gain health at the beginning and keep gaining health with every kill/assist, but then if you die, you lose a third of your stacks. That's another thing Guardians Angel is good for. My next item is Bloodthirster. This item is very good when you going up against a lot of champions in a team fight. My last item is going to be Lich Bane. This will be a game winner when you get this. Its almost as good as Infinity Edge, but Lich Bane has better A.P.