Steam Siege arrived in 2016 during the trading card game's modern competitive renaissance, introducing M Evolutions and new mechanics that shaped tournament play. The set balanced competitive viability with collector appeal, establishing itself as a meaningful chapter in the post-XY era when Pokémon TCG experienced sustained growth and the hobby began attracting serious investors alongside traditional fans. Nidoking's reverse holo treatment showcases this Poison-type's intimidating artwork against the distinctive holographic backdrop that defines the set's aesthetic. Collectors prize reverse holos from this era for their visual distinctiveness and the way they preserve beloved Pokédex entries in an often-overlooked format that captures the card's personality differently than standard printings.