"What You Leave Behind" is a boosters-only expansion with 122 cards (40 rare, 41 uncommon, 41 common cards) that includes an 18-card "Archive" foil subset (1:8 average pack distribution). The regular foil inserts are distributed 1:7 packs on average. This final installment in the Star Trek CCG product line is a must-have for players and collectors alike; it includes new additions to game play, as well as nods to fan favorites from the history of Star Trek CCG: Second Edition. 
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<em>Persistent</em> is a new keyword that allows a player to bring successful dilemmas back against an opponent on future turns. The expansion also focuses on missions worth 40 or more points; players completing these missions will receive new and interesting rewards.</br> 
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The final expansion set in the storied Star Trek CCG will herald the re-appearance of Mot, The Barber. This character, along with his humorous and often misunderstood barbering skill, was introduced in the Premier set more than thirteen years ago, and will now carry through to the final expansion set. In addition, the set will revisit successful older cards and strategies such as Patrol Neutral Zone and MACO, and offer reworks of popular personnel such as the Borg Queen and Data. A solid selection of personnel and ships across all of the Star Trek affiliations will also be included. While there may still be uncharted game play territory for the game's loyal players, this 14th expansion for the Second Edition of Star Trek CCG does the job of bringing to a close what we feel has been one of the most successful games in the genre of trading card games.</br>