#464310
As you've surmised, the new flip mechanic has associated rules. I want to commend the Rules team for working to get this to work. It seems pretty simple, but they really worked hard to get this done. There's an article coming about how awesome it is, but in the meantime, here are the rules:
Building a Deck
Double-sided missions count as one of your 5 different missions. If the mission had different titles on each side, both sides must be different from your other missions. If either side of the mission is a headquarters mission, that mission does not count towards your minimum of 2 non-headquarters mission.
Other Important Rules
Double-Sided Missions
Some missions have two sides: a front side and a reverse side. The reverse side of a mission shares collector info with the front side of the mission, with the addition of an asterisk (*).
Double-sided missions begin play front-side up, and may flip over during the course of the game. Only the face-up side is considered to be in play. When a mission flips over, all cards on, at, or beneath that mission remain unless the mission states otherwise.
You may not flip a mission if doing so results in commanding a mission you could not otherwise command. For example, you cannot flip a mission from a non-headquarters side to a headquarters side if you command Unicomplex, Root of the Hive Mind, which states that you may not command another headquarters mission.
Building a Deck
Double-sided missions count as one of your 5 different missions. If the mission had different titles on each side, both sides must be different from your other missions. If either side of the mission is a headquarters mission, that mission does not count towards your minimum of 2 non-headquarters mission.
Other Important Rules
Double-Sided Missions
Some missions have two sides: a front side and a reverse side. The reverse side of a mission shares collector info with the front side of the mission, with the addition of an asterisk (*).
Double-sided missions begin play front-side up, and may flip over during the course of the game. Only the face-up side is considered to be in play. When a mission flips over, all cards on, at, or beneath that mission remain unless the mission states otherwise.
You may not flip a mission if doing so results in commanding a mission you could not otherwise command. For example, you cannot flip a mission from a non-headquarters side to a headquarters side if you command Unicomplex, Root of the Hive Mind, which states that you may not command another headquarters mission.
New places for old(er) keywords: Continuing Mission
Cardassians and Federation posturing it out: Showdown: Four Lights
Cardassians and Federation posturing it out: Showdown: Four Lights