In the vibrant world of Pokémon, we dive into the time capsule of '96, where the very first expansion pack of Pokémon cards made its debut. These cards are like the OGs of the Pokémon universe, bearing a distinctive black mark in the lower right corner. It's like the Pokémon equivalent of a birthmark, a collector's holy grail, and a thrilling trip down memory lane, all rolled into one.