It's a product containing both a new illustration promo card and booster pack!
It'll include 2 copies of a popular card with an appealing new illustration.
Paring this with past boosters increases the appeal to purchasers.

This set includes the popular [OP-15] and [OP-16]!
With this set, you can get previously released cards with [OP-15] and further strengthen them with [OP-16], making it an easy set for beginners to start with!