During your opponent's next turn, any damage done to this Pokémon by attacks is reduced by 20 (after applying Weakness and Resistance).
Steam Siege was released in 2016. It belongs to the XY series.
With 116 listed cards, this is a mid-size set by modern TCG standards. As of 2026, the set is 10 years old and now falls into an established back-catalog period.
Within this set, Shieldon is card number 69 with a Uncommon designation.
Shieldon appears in Steam Siege, released in 2016. The printed flavor text states: "It was generated from a fossil dug out of a layer of clay that was older than anyone knows.
It has a sturdy face." Its card type is Pokémon. The rarity label is Uncommon.
Printed HP is 90. Energy typing is Metal.
As an evolution, Shieldon develops from Armor Fossil Shieldon. Printed card effect: Put this card onto your Bench only with the effect of Armor Fossil Shieldon Attack line includes "Rock Head" and "Hammer In".
Current market pricing for Shieldon (Steam Siege) sits near $0.23. Price action is stable over 7 days, moving only 0.0%.
It now sits 8.2% above its 30-day average of $0.21. The 90-day window shows a floor near $0.13 and a peak around $0.25 (52% total spread), which maps to high-volatility movement.
Rarity classification for this copy is Uncommon.
Collectors tracking Shieldon often benchmark it against other Shieldon cards. This comparison sample includes 5 alternatives across 5 sets.
Comparable prices currently cover $0.13-$5.01, a 3754% band. Against the sample mean of $1.28, this card is -82%.
Notable alternatives include Shieldon #109 (Astral Radiance) at $0.13, Shieldon #84 (Ultra Prism) at $0.18, Shieldon #62 (Platinum) at $0.65, and Shieldon #DP08 (DP Black Star Promos) at $5.01.
Market structure summary: Over the last 7 days, prices have remained stable at 0.0%, indicating a consolidation phase over sudden breakouts. The 90-day range spans $0.13 to $0.25 (52% spread), which indicates high-volatility behavior.
Current value is 8.2% above its 30-day reference ($0.21). Without a consistent graded comp in the current snapshot, live listings are still required for reliable condition-based valuation.
