mystery booster box release date legal text Looks like people will start

Lower Text - Promo Info booster NEW EVOLUTION [BT-01] CLOSECLOSE BT1-063 SR Digimon Lv.6 Seraphimon Color Yellow Form Mega Attribute Vaccine Type Seraph/Three Great Angels DP 10000 Cost 12 Digivolve Cost 1 3 from Lv.5 Digivolve Cost 2 - Upper Text [When Digivolving] Trigger Recovery +1 (Deck) (Take the top card of your deck and place it on top of your security stack).[Your Turn] If you have 3 or more security cards, this Digimon gains Security Attack +1 (This Digimon checks 1 additional security card)

Packaged in a Specially Printed Decorative Box

Cascade, for all cards, is an ability that goes on the stack when the spell is cast , not when it resolves

Sell them to the shop based on their estimated number and bulk collection price