digimon card game chaosmon - BT16 Beginning Observer - Digimon Single Cards Card Chaosmon Valdur Arm SR

"Rare cards above a certain level are coated with aluminum, so if you put the whole pack through a metal detector or a high-precision weighing machine, you can tell which packs are most likely to contain rare cards without even opening them

Players like Rekkerafthor noted that they generally opened their packs right after purchase anyway

Step inside the iconic TARDIS, a little blue box that transcends time and space, and join forces to safeguard the cosmos from all manner of perilous threats

If Cascoon is in the active Pokemon spot, unless like I just said you're are going to evolve into Dustox the next turn, I would use Spiral Drain every turn