On the bright side, the 5 card packs tend to be a lot more affordable than boosters of the bigger releases. Not only are there less cards in the entire set, the same can also be said for individual boosters. Like all Duelist Packs, it’s a smaller version of a regular set. Rivals of the Pharaoh is the 15th Duelist Pack that was released for the Yu-Gi-Oh! Trading Card Game.