what's guaranteed in a japanese booster box Pokemon Triplet Beat (SV1a) Hazz Vault Batch 001 is

Shiny Treasure ex Main Set Fully Revealed, Features New Reverse Holo Style

Youll need to wait to start attacking most of the time (unless you are using Teal Mask Ogerpon ex to attack which wont happen often)

Each team must register a Team Name

Cost reduction for activated abilities makes this great for a combo-esque deck using Training Grounds effects to enable a busted combo with cards like Kenrith, the Returned King

Check for the correct card stock and print quality

#4 Espeon ex Special Illustration Rare This card just looks really good, with Espeon descending out of the ether surrounded by strange and interesting flowers and patterns that really draw you in visually