I LOVE IT!!!
I'm using it like this. Prerequisit:Polytheism, attack of 10, defense of 1, move of 1, all terain as roads, Cost of 12, ZC checked, HP Bonus -3, Invisible, detect invisible, Hiden nationality, Amphibious, Foot Unit, Load, Airlift, Pillage, Offensive land script.
It Rocks it...