Dominions is like a library, full of books. Even if you get somebody to publish a complete unit database, you will have only scratched the surface of his complexity.
Why do I say that? Because of the intricates mechanisms of the game are not revealed precisely (with numbers) by the IW team. You have to test, test and test again if you really want to understand things (or you take the empirical approach to learn by playing, but will see only 5% of what the game engine has in his guts).
For example, I asked myself if etheralness and luck were cumulative, speaking of protecting your troop. I cite this example, but these kind of questions comes by dozens each time I open a turn of dominions. And thats not in the rule either.
So you'd better see dominions has an enormous library, where you can delve to your heart pleasure, picking here and there a book, reading a chapter, then moving to another topic.
oh and the response is yes, it cumulates.
