The set contains 36 cards - one card for team manager Hikoki Kokubo and 35 cards for the players. Let's see if I can phrase this right - the set contains all the Samurai Japan players who played in either the Premier 12 last November or the two friendlies against Taiwan this past March AND who spent the 2016 season in NPB. Another way to say it would be that the set contains all the Samurai Japan players who played in either the Premier 12 last November or the two friendlies against Taiwan this past March except Kenta Maeda. This includes most of the big names in NPB - Shohei Ohtani, Tetsuto Yamada, Sho Nakata, Shogo Akiyama, Hayato Sakamoto, Yoshitomu Tsutsugoh, Tomoyuki Sugano and Ryosuke Kikuchi. There are three Nakamura's in the set - Akira, Takeya and Yuhei. There's at least one representative from every NPB team with the exception of Hanshin. The entire checklist can be seen here at Calbee's website (in Japanese of course).
The cards themselves resemble the "Star" insert cards from the regular Calbee sets - they picture the player superimposed over a false background and have a kira finish. There's a parallel version with a large gold facsimile signature on the card as well. I'm not a big fan of this look but I'm happy that this set exists so I'll live with it. The downside is that the cards don't scan particularly well - they look much better in person. Here's some examples:
All the cards can be seen at Jambalaya.