Nasus is quite the interesting character. He's one of the only few people in the game who has the ability to scale infinitely throughout the match. Although he surely isn't a tournament pick, Nasus is not an unusual top champion in most public games. Most people, when they look at his kit, believe that his Q will have enough damage on it's own, not needing any sort of tankiness. I disagree. I believe that giving him damage, on top of farming his Q, with maximum CDR, Nasus can become one of the most ridiculous characters in the game.

Not to mention he has buckets of lifesteal as his passive, through masteries, and through The Bloodthirster for all the sustain he would ever need.

Also, no one will ever expect you to build him this way, thus giving you the upper hand.

Nasus, using this build, has a 39 percent CDR with masteries, so I decided to run a few CDR glyphs just to max that completely out. I then did mana regeneration because with your high CDR and frequent Q's, you might start running a little low.

I added some alacrity runes in order to get more out of his lifestealing, and to make towers cry to their mommy's. Their big, towerlike, stone wombed mothers.

I then added lifesteal quints to capitalize on his already massive sustain, and some armor penetration runes just to be absolutely sure you are doing true damage with every strike.

The purpose of this item build is to gain full cooldown reduction, damage, and armor penetration. For boots, I would reccomend Berserker Greaves in order to gain more out of your huge lifesteal and increasing your damage to towers by quite a bit (This Nasus is a ridiculous pushing monster, especially with Demolitionist). I then go for Avarice blade early, in order to get some early extra gold in preparation for an eventual Ghostblade. An Trinity Force is always good, because of how much great stuff it gives you. The Phage proc works wonders on your Q, a bit of health and mana is never bad, and another slow is never a bad thing.

From there, a Frozen Heart, for it's massive CDR and mana, with the added bonus of armor and a great passive aura (helps to take on AD carries) secures itself as an amazing item for this build. Although the passive gold is great, you will have to move on eventually. Move on to the Ghostblade, of course, giving you even more cooldown reduction, pushing you up to MAXIMUM REDUCTION.

This means you can have a Siphoning Strike up every 2.4 seconds, securing your role in super master farmer Neo Nega Extreme.

Now you can build an Infinity Edge and a Bloodthirster in order to destroy everything in one hit.

(I wonder if this can solo Baron)

If you can get access to Blue Buff, and the enemy team is lacking in armor, getting another BT could be helpful.

Armor Penetration, Damage, Lifesteal, and CDR make up most of what you need. Summoners Insight gives you even more armor penetration on your exhaust, while making your Ghost put a little bit more bang for your buck. You should put the 1 leftover point in utility just for improved recall.

Also Demolitionist because we want to make tower orphans.

Farm (Q) as much as you ****ing can. Last hit those tiny blue wolves, those mini wraiths, and most of all, those *******ed purple minions. Kill those purple minions like they killed your dog-dad. Protect your glorious blue minions enough to die by the holy light of the turret.

Wait no don't push your stupid lane jesus.

But yeah, increasing CDR is really going to help you farm way faster than you could before.

GHOST AND EXHAUST SO NO ONE WILL EVER ESCAPE YOU.

No one can escape the cycle of life and death, especially not your opponents.

(Also Ghost for pushing towers)

Try to get Red Buff, if possible, but taking Blue buff is usually pretty stupid considering your ridiculous CDR. Although I guess it isn't awful on him early on.

This works best in team comps where the jungler, and possibly other roles, will have to be tanky in order to compensate. Junglers like Mundo, Skarner, or Malphite will be welcome on the team, while having a tankier mid, like Gragas, or someone that can easily escape situations, like Fizz, would also go well with Nasus. Graves/Taric as a bottom lane would also not be out of place.

Pro's
-Will 1HITKO squishy champs late game
-Will destroy tanky champions late game
-Will Destroy towers late game
-Has more slows then your mother has teeth
-Still decently tanky
-People will respect you for your manly build
Con's
-Relatively squishy compared to other builds
-Still possible to have some mana issues
-Laning phase can be tough without ganks.

If you want to be the best Nasus of all time, this probably isn't the build for you. If you want to play a super situational insanely fun champion, this may be right up your alley.