Rammus - Thornmail and Hextech Gunblade

I just tried out Rammus with Thornmail and Hextech Gunblade in a custom with a friend. It is actually good enough to where without your W up, you still heal more than the minions are damaging you, and the healing is quite fast.

The build I tried out was:

http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2055694407/51010149?tab=overview

with the core build being Hextech Gunblade, Thornmail, and Ninja Tabi.

The healing you get along with the damage reduction you have makes it so that you heal for slightly less than the ADC's autoattacks should be doing (at least, in our game with Ashe, and he was running Grevious Wounds).

The amount you heal off just minions attacking you is insane. You could literally stand behind a turrent and proxy farm just by standing there.

I think the best core on this build is Thornmail, Hextech Gunblade, Ninja Tabi, mainly for reducing autoattack damage before healing. Then, the next item should be Spirit Visage, to both increase your damage and reduce any magic damage. Keep in mind that a level 5 W gives you 120 armor, and 120 mr and also increases your healing because it does damage, along with stacking with Thornmail. After you get Visage, Randuin's Omen is probably the next best item, so that you reduce the ADCs critical strike damage and make yoru healing agianst them more effective. By this time, they should already have enough crit to make it worth it. For the last item, I like Iceborn Gauntlet, because the radius on the slow is MASSIVE, and should hit within 550 range around your target. It's insane. After that, get Elixir of Iron, and you're set. I run weird masteries with Strength of the Ages to make up for my lack of HP, but you might not need it, because the healing you get from this already gives you more effective HP.