I know that often the tank are playing tank, but a hero is versatile and is very strong in Rammus ad / tank, it is less strong but you can customize the build according to your gaming, tactical, or opponents, personally I play all the time like that and I am the result, in Rammus play this team is advised to avoid the brutal gank

you have good speed with the power ball, a good attack speed, the critical 50%, =) life steal with great force, and Rammus is a tank! the armor spell will defend you if you know how to use it! ^ ^ Do not forget! you must not commit you are the pillar of the team! gank!

good luck! =)