YuGiOh Kaiba Duelist - YuGiOh Kaiba Boosters! Each Kaiba Duelist booster box contains 36 packs. Some of Kaiba's best monsters, Spells, and Traps are back for a new round with Duelist Pack Kaiba. Duelist Pack Kaiba includes 4 new pieces of alternate art, 2 reprints of hard to find alternate art from prior promotions, and 5 new Ultimate Rare versions of Kaiba's most dangerous cards. And while other Duelist Pack sets were 30 cards each, Kaiba has so many great and memorable cards from over the years, that Konami increased this set to 40 cards!