hey ya he is very succeptable to CC but in my opinion he isnt to hard to get out of a fight. but thats my opinion.
The reason I use a Gunblade is for maximum damage white being able to get healing while doing it. Your ult as nasus is a AP ability that nukes the entire team. if you are in fights and have ult up, this, added with lifesteal, will keep you alive significantly longer. From experience in ranked matches, if 4 people are being affected by my ult, I usually deal around 5000 damage in total with it over the team fight. this with spell vamp makes you heal for around 1000. Ive found that using both spell vamp and life steal makes nasus one of the longest lasting dualists and an utter kick *** carry.

I would say if you use Ninja Tabi you should upgrade that philosopher's stone into elesia's miracle or at the very least grab Cleanse as a summoner spell, Nasus is VERY susceptible to CC and you will be targeted in team fights, the lack of tenacity shuts down Nasus.

Can you explain your choice of Hextech Gunblade? I have never seen it before on a Nasus build and an item that unique and rare on a champion warrants an explanation.

ya i meant to say that nasus will be a tanky damage but by support i meant that he deals damage to all with ult and his wither and soul fire will get lots of assists and help team with dmg and team fight control.

snow i use tank masteries but its fine with whatever you want to use. and since i use him as a tank i build soul shroud over youmuu's.

But both of you tank you for the feed back and ill def try the higher damage build next time.

Ok where to start. #1 ditto on what sebas4423 said about boots and q. #2. ummmm support nasus.....im confused now....what buying 1 aura item makes him support? if your gonna call support then tell me why. #3. Your guide has nothing to do with jungling so why even bring it up much less the first chapter? #4. I completely disagree with the masteries because Nasus needs damage out put so 21-9-0 is the best route. #5 As far as items overall there fine but i mean really there is no need for Soul Shroud on Nasus, and also if your gonna build Youmuu's Ghostblade you must get it much earlier then you have it. #6. Not that this is a big thing but please use BBcoding where it applies. anyway good attempt, keep working with it and im sure this will turnout on top.

It's a good build, just 2 things I do not agree with;
Ninja Tabi should be Merc treads,
I think you should level up wither over spirit fire as you don't wanna kill creeps with your spirit fire, you wanna kill them with your q,
For the rest, nice build!