I am trying to find some card value hits for every new Magic: the Gathering set released and included in my preorder list is the set’s Prerelease kit. A Magic: the Gathering prerelease kit is a special package that is released before a new set of cards in the Magic: the Gathering collectible card game. The prerelease kit typically includes several booster packs of the new set, a special promotional card, and other materials such as a spindown life counter, a deck box, and a guide to the new set.