Nasus is a versatile top laner champion who excels in doing TONS OF DAMAGE with his Q. He is also a brilliant pusher, and great for building demolishen

PASSIVE: Great life-steal that really sustains Nasus, and furthermore, it is active with your Q as well.
Q: This is the ability that makes Nasus, Nasus. Every-time you last hit anything with this ability, it permanently gains +3 damage. This ability scales with AD AND AP AND the minion farm! So if you killed 100 minions with this ability, then you permanently gain +300 damage with it! As you can imagine, this makes Nasus scale incredibly well; provided you put in the time. Always max this first

W: Nasus' one an ONLY CC. This ability is one of the best slows in the game, and very useful whether you are escaping or chasing an enemy champ. However, it does take a lot of mana and it has a long cool down, so use it sparingly!

E: Many people think that this ability is useless, but I disagree! It may not do a lot of damage early game, but late game you can clear entire creep waves with it. Moreover, in team fights, it is essential because if significantly reduces the armour of everyone in its radius. This coupled with you Q, causes lots and lots of damage in a short space of time! Again, this is a mana depleting ability, so early game, only use it if you are securing a kill

R: This is one of my favourite ultimate's in the game. This is your "get out of jail card" for Nasus. Buffs you to turn you into a tank, and does percentage damage to nearby enemies. Very useful to bait turret-dives with, or to initiate in a team-fight.

Pros:
-Great sustain
-Unlimited potential with his Q
-Very versatile
-Insane mid/late game (Provided he is farmed well)
-Has an element of CC and AoE

Cons:
-Bad early game
-Only scales well with ALOT of minion farm
-Mana thirsty
-Can be shutdown easily early game

Flash:
You would be stupid to not take this with any champion!

Teleport:
Great for any solo top, and useful for all stages of the game. Especially good for Nasus because you are able to split-push with it

Clarity:
If you are really frustrated with Nasus' mana thirst, than this will solve your problem! In addition to this, never have to recall because of low mana or health. With this summoner, be the King of Sustain!

Ignite:
Not one of my top choices, but if you want to play more aggressively, then this is what you need.

Boots are situational, but Tabi or Merc-treads should always be your top two.
Trinity Force is ALWAYS your first option because it works with any build for Nasus. It gives a little bit of everything, and that is what Nasus needs early game.
With this Off-Tank AD Nasus build, you need Black Cleaver for the armour penetration. Blood-thirster adds to your sustain, and builds a lot of AD.
Runic-Bulwark gives you both resistances, and adds more team-fight potential with the aura.
Guardian Angel just adds to your late-game unstoppableness! They think that they have focused and killed the carry.....THEY ARE WRONG!!!

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This is very important! Nasus really depends on last hitting with his Q. If you are able to farm well with his Q, then it will be unbeatable! The more damage your Q does, the more you can life-steal in that attack which really keeps you alive in team-fights. Provided that you have put power in you Q, Nasus can carry games surprisingly well and turn into one of the most terrifying champions in the league!

Thank you for reading this Nasus guide. This is my first guide, and I hope you find it helpful. REMEMBER TO FARM YOUR Q and everything will be fine and dandy!