Historical Rules · 17 June 2011
Rule 904.4
Official source text from the 17 June 2011 Rules release
At the start of the game, the archenemy shuffles his or her scheme deck so that the cards are in a random order. The scheme deck is placed face down next to the archenemy's library. All scheme cards remain in the command zone throughout the game, both while they're part of a scheme deck and while they're face up.