People are also leaving out stuff like Pokemon, Yu Gi Oh, and Magic The Gathering.
All of them also introduce rarities (arbitrary exclusiveness), hidden cards in a pack, and extreme gambling gamification.
The only non-gambling MtG packs are the preconstructed commander decks. All 100 cards are published. But the packs and boxes? Pure gambling, especially for the chase rare cards.
And before anyone asks, yes, my username is based after this $2 card. https://edhrec.com/commanders/nekusar-the-mindrazer
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