The base set has 36 cards which as almost always are split evenly among the 12 teams so there's three cards per team. There's a number of big stars in the set - Sho Nakata, Yoshitomo Tsutsugoh and Tomoyuki Sugano - along with a bunch of other significant names like Yasuaki Yamasaki, Yuki Matsui, Kosuke Fukudome, Tomoya Mori, Yusei Kikuchi, Yusuke Nomura, Shintaro Fujinami, Daisuke Matsuzaka and Hisayoshi Chono. There's also five 2018 rookies - Kotaro Kiyomiya, Shosei Nakamura, Hisanori Yasuda, Daiki Tajima, and Munetaka Murakami. There's a couple guys that I was surprised to not see in the set - Tetsuto Yamada and Hayato Sakamoto being the big ones. The fact that Yuki Saitoh is not in the set just proves that it's now 2018 rather than 2012 because he was drafted with a great deal of fanfare back in 2010. And obviously the fact that the set only includes first rounders prevents a bunch of guys like Yuki Yanagita, Shogo Akiyama and Seiya Suzuki from being in the set.
Here's some sample cards:
As always the box set came with a "special" card that could include an autograph card and as always I got (well Ryan got for me) an opened box that only had the base set in it. Ryan did a post about the set that explains all the possible "special" cards. Jambalaya has all the cards up on their site too.