Contents:

24 Mystery Booster Convention Edition Boosters, each with:
2 white commons or uncommons
2 blue commons or uncommons
2 black commons or uncommons
2 red commons or uncommons
2 green commons or uncommons
1 multicolor common or uncommon
1 artifact or land common or uncommon
1 rare or mythic rare with the card frame introduced in Core Set 2015
1 card from before Core Set 2015 (can be a common, uncommon, rare or mythic rare)
1 "playtest card"—an original design that sometimes bends Magic’s traditional rules