Nautilus Top?

It's definitely doable, and Voyboy seemed to think there was some merit to it (though I don't know the breakdown of why he chose Nautilus for that specific match, and he didn't do very well) back in Hanover. You'll probably run into some of the same problems Blitzcrank does with minions blocking your primary initiator, though. W seems like your first skill you should be maxing if you're trading a lot or E if you're trying to push waves/farm faster. Your shield's DoT is surprisingly high and the shield itself scales off HP, which lets you get a lot of mileage out of a Rylai's (in addition to it boosting your already crazy CC). I'm just wary of champions that can poke to death and then run before Nautilus can catch up. Janna support almost seems necessary to me if you're laning with Nautilus solo top to help mitigate his horrible speed.