There was (and I think there still is) a relatively simple one for WPN/official game day-style events, but not otherwise.
I am the Magic Man.
(Pay no attention to the man behind the curtain.)
I am the Lawnmower Man.
(I AM GOD HERE!)
I am the Skull God.
(Koo Koo Ka Choo)
There are reasons they call me Mad...
In order to become an official DM, you have to find one, challenge him to combat, kill him and take his books...