At first glance, this is definately a troll build. I love playing Nautilus and I found something fun to do with him. I was tired of his slow attack animations, and I decided to build wits end, as was recommended; then I built a Zephyr. **** just got real. In any case, this is just something fun for people to try.
Please don't hate <3
Comments appreciated.

There's not a lot of it in this guide. Most of it would be my opinions, but for the most part:
Bezerkers greaves are a relatively cheap AS item.
Wits End synergises with your W quite well.
The SoT Ancient Golem gives you much needed tankiness, health and tenacity.
Otherwise, the Giant's belt can be saved for a Sunfire, Randuins or Warmogs.
If you choose to buy the SoT Lizard Elder, you get a true damage DoT, along with your W's DoT and Wit's End 42 magic damage.
Nashors gives you AS, AP and CDR. Due to Nautilus' long CDs I find CDR very helpful on him.
Zephyr gives you much needed MS, along with AD, AS and CDR. The tenacity is good if you didn't buy the SoTAG.
Then there are other situational items.