Steam Siege arrived in 2016 as a pivotal set bridging the XY and Sun & Moon eras. Known for introducing full art card designs that became instantly iconic, the set captured the imagination of collectors and players alike. These oversized illustrations represented a creative peak for the era, earning the set a lasting place in Pokemon TCG history. Steelix EX's full art treatment showcases the steel-type evolution in dramatic detail, with artwork that emphasizes the character's imposing metallic form. Collectors prize full art cards from this period for their artistic merit and nostalgic appeal, making standout examples of Steelix EX particularly sought after among enthusiasts of the format.