yugioh card dragon master knight PSA10 GB7-003 Secret Yu-Gi-Oh! 1枚 (Used) （1587960945）| magi -TCG Marketplace- Rivals of the Pharaoh set Yu-Gi-Oh Dragon Master Knight Secret

When trading unopened booster packs, it does NOT MATTER (as far as Ive seen) which packs you trade

Despite the set's print run being about three times as big as Alpha's, Beta sold out as quickly as its predecessor

Vanishing also uses time counters, so you can buy more time with those permanents on the battlefield before theyyou know, vanish

You can look up some info on those in this thread and the spreadsheet: www.elitefourum.com/t/master-list-of-the-rarest-pokemon-cards/28390/1 There might be more, but those are the ones I can think of right now

If you're interested in the full list of Secret Rares from Prismatic Evolutions, you can check them out here