Pokémon Jungle arrived in 1999 as the second major expansion, building momentum from Base Set's explosive popularity. The set captured the trading card game at a formative moment, introducing beloved characters and establishing design patterns that defined the era. First Edition printings represent the earliest releases, making them historically significant to collectors documenting the franchise's early years. Poké Ball is one of the set's trainer cards, essential to gameplay and recognizable across generations. Its artwork exemplifies the vibrant, straightforward illustration style of early Pokémon TCG releases. Collectors pursue these foundational trainer cards as key pieces of the Jungle set experience, particularly in first edition form.