Clamp in Cardland is a trading card game published by Upper Deck Japan and released on November 15, 2007. The game draws its card art and characters from the extensive back catalog of CLAMP, the four-member Japanese manga creative group, spanning properties including Cardcaptor Sakura, xxxHolic, Chobits, Tsubasa: Reservoir Chronicle, Wish, and Tokyo Babylon. The first series comprised 131 cards, with rare inserts including Secret Cards (notably a dual Sakura card pairing the Cardcaptor and Tsubasa versions of the character) and six Ultra Cards. Starter sets included story cards, character cards, randomly packed booster cards, a play sheet, and a rulebook. Additional series were planned for February and May 2008, with booster boxes containing 15 packs of 10 cards each. An official card catalog, Clamp in Cardland Irreplaceable Book, was also published. The game was produced for the Japanese market and did not receive an English edition, limiting its collector footprint outside Japan.
Source: www.hlj.com/clamp-in-cardland-vol-1-booster-1box-15pcs-upd82018