Metal Raiders was the second Yu-Gi-Oh! booster ever released! For years, you could get your hands on these coveted packs as part of the Legendary Collection, but now, just in time for the 25th anniversary celebration of the card game, they are available as standalone booster packs! The complete Metal Raiders booster set contains 144 cards: 100 Commons, 22 Rares, 10 Super Rares, 10 Ultra Rares, 2 Secret Rares. Each booster pack contains 9 cards.