destined rivals sealed booster box case and heroic Trainers are racing to stop it Pokemon Destined Rivals Booster Box

If you've also unlocked Gyzarus, then that means 8 opponents have now been unlocked, which also unlocks a new card pack

They are tech stickers because they are big so that you can put them on a laptop or something like that (Tpci actually said that)

Raging Out GX allowed you to discard the top ten cards of your opponents deck, which could instantly win the game by decking them out. Raging Out GX is most effective late-game when the opponent has already thinned their deck through searches and drawing

Anyone defeated and killed in the Barian Invasion arc had their soul sacrificed to empower Don Thousand

Furthermore, theres good variety in the scenarios in the Core set