A: When you play with three Wizards, it’s crucial not only that that you don’t know what alignment they are, but also that you not know how many of each type you have either.

So you hand out all three Wizard cards, and when the time comes for them to choose alignment cards, you offer all four available. Three are picked, and the last one is set aside, sight unseen.

Voila! The gameplay state is achieved where you don’t even know what combination of Wizards you have: two Good and one Evil, or two Evil and one Good.