So, I saw many nasus builds on MobaFire but 90% of those builds are Tank Nasus. In this build i want to show you that Nasus is s hard dps champion. I always play this build and i got a penta, a quadra and a triple that are soon going on youtube. This build should be only used if you are going solo top. Beacuse you need to farm your Q as much as possible and in the end of the game have over 600 staccks.

I use
Armor pen Marks 9x
Armor Seals 9x easy can be changed with dodge
Magic resistance Glyphs 9x
Flat hp quints 3x
I use these runes for as much as possible early game endurance(for stacking your Q)

9/21/0
i take armor pen in offense
armor. magic resistance, hp, dodge and redused dmg in defense
and 0 in utility

I take flash and teleport(again for farming Q)
other good choices are: ghost(for chasing because your E doesnt last for eternity)
ignite(to stop heals and give the finishing blows)
cleanse(for hard cc)
exhaust(same as ghost but then your teammates can catch up, not recommended beacuse you dont get kill stealed)
bad choices: heal(doesnt need it cuz never gonna be in a that independent fight)
revive(just not)
clarity(have teleport to replenish mana)
cv(support)

This is my first build so dont be hard on me beacuse idk how to put those little pics of runes and masteries.

Pros: Can one-shot squishies
slowing their melee carry(tryndamere, jax)
Can penetrate through a lot of armor (armor pen, and E)
Your team will get an ace in a teamfight and you are still able to push cuz of his fast healing and the Q applies on towers
Cons: Not so much but here are some
low attack speed
hard champion to get used to