A followup question if you don't mind; now that the decklists have been updated here, it also says a Cycling land will be in two color packets. So they show up normally in addition to the generated lands?
Most packet combinations will get 2 cycling lands (Barren Moor, Lonely Sandbar, etc.) of the proper colors added as part of the "Add the right lands" process. They aren't really "in" the packets, but they're included in the list as a reminder (and because it effectively works out that way).
Wizards Jay
Any deck that ends up with 2 colors will get some M20 duals - so any two-color packet will do it, as would picking (say) mono-W and mono-B.
Wizards Jay
Most packet combinations will get 2 cycling lands (Barren Moor, Lonely Sandbar, etc.) of the proper colors added as part of the "Add the right lands" process. They aren't really "in" the packets, but they're included in the list as a reminder (and because it effectively works out that way).