Always use your Q to kill a minions, like that you'll get +3 bonus damage on your Q !

Try to spam your Q, with the trinity force, it will deal a lot of damage. Use your W if the enemy try to run or use it if you want to run but the enemy go faster than you ! Use your E to execute your enemy because when you cast this spell at level 5, it will deal a 250 start damage. For your ultimate, just use it when you are like... under 25% of your hp.

Have fun with this Nasus build and good luck ! DarkLael