[[Spanish release date::| ]][[Spanish Sneak Peek date::| ]] [[English release date::| ]] Soul of the Duelist is a Booster Pack in the Yu-Gi-Oh! Official Card Game (OCG) and Yu-Gi-Oh! Trading Card Game (TCG). It is the first Booster Pack in the OCG Series 4. It is the first set after the convergence of Japanese Booster Pack releases with TCG, Asian-English and Korean releases. Previously one set of Booster Packs was being released in Japanese, while other languages received separate Booster Packs, which were usually an amalgamation of two of the Japanese Booster Packs.