Unbroken Bonds, released in May 2019 during the Sun & Moon era, introduced the popular Tag Team-GX mechanic featuring dual-character cards that became highly sought after by collectors. The set's combination of competitive playability and attractive artwork established it as a cornerstone release for the modern era. Strong demand for nostalgia-driven Sun & Moon cards continues to drive prices, particularly for the iconic Tag Team-GX cards that defined the format.
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