I would have to agree with the change in Enchanted Armor and Perseverance. I would also say that Oppression could be viable especially in team fights. With Riptide you can slow a lot of people quickly and gain anywhere from 6-15% reduced damage. With some CDR riptide can be used pretty often, something to consider, I am about to test it out in a few matches. I like the guide overall, im excited to get into naut because I too am a fan of tanky supports (Leona, Thresh = <3).

Im glad to see another that plays Support Nautilus. I prefer to Tank Support myself due to the high amounts of CC. I also agree with Flash and Exhaust for summoner spells. Gives more mobility and that extra bit of CC needed.

Now, I don't like that you do not upgrade your Relic Shield in the Embrace and then Face of the Mountain. When I support, I do upgrade it fully. The active bubble that it places allows you to do more for your Ranged AD, or any other teammate for that matter. Its a small bubble that absorbs a few hundred damage, but that bubble can make or break a team fight or clinch situation.

Ill have to say well done overall. Keep it up ;)

You cannot max an ability at level8! Besides, you could switch Enchanted Armor and Perseverance to Block and Unyielding what will help you pretty early in the game especially as a melee support. When starting with Relic Shield I think you should use the item transformation of this item! Furthermore, you could mention Heal as an optional summoner spell and you should talk about Gameplay in general.
The was updated like one month ago so maybe, maybe it will just stay here like that :P

Awesome guide! Though you still need to work on it, an update would be nice. Keep up the good work and don't let that guide to vanish into Mobafire's archives. I truly believe that if you return and make an update, Nautilus will enter the meta as a support! :)