Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
Summoner Spells- Gives you a nice slow on top of your own awesome slow and rendering alot of the dmage done to you completly invisable. Survivablity+Utilty all wrapped up into one nice package
- A nice speed boost really helps with escaping and chasing and lets face it Nasus needs some speed and Ghost gives you that.