pokemon energy card art Pikachu on Custom ArtStation - Painted Energy Cards

They must think it's kind of similar to how digital loot boxes might glow random colours when you hover over them when they have something good inside

shuffle into the Deck, "Vaalmonica" cards from your face-up Extra Deck, GY, and/or banishment, except "Vaalmonica Ereditare", up to the number of Resonance Counters on your field, then you can draw 1 card for every 3 cards shuffled

I have never had bulk lots contain more than 200 sets, but your situation may be different

Destiny HEROs (Tier 1) 65000 gems + $71 Destroyer Phoenix: 6500 gems Destiny Rulers: 500 gems Fortress of Gears: 3500 gems Shark Fang: 4500 gems Armed Neos Thunder: 1000 gems Eternal Stream: 9000 gems Chaotic Compliance: 2500 gems Idea of Armageddon: 2500 gems Future Circuit: 13500 gems Zillion Thunder: 2500 gems Predator of the Abyss: 2500 gems Selection Box Vol.09: $71 Tech cards: 17000 gems These are decks whose best versions involve cards currently exclusive to Selection Boxes