First, most people have about 1/3 of their deck devoted to the "Mana Engine."
Second, while the resources of a deck might become ever perpetuated in the main aspect of the fact, you will never be able to overcome the strong probability that influences will never coenside with your cause.
Thought: If I used Volraths Stronghold to put a plainscyclining creature onto my deck before I draw, I'll be able to get all of my plains from my deck and cast something awful.
The possibility is even better when using a G deck because green just simply makes any color mana that you want. i.e. birds of paradise