Steam Siege was released in 2016. Series classification for this set is XY.
The checklist contains 116 cards, placing it in a mid-size expansion range. As of 2026, the set is 10 years old and now falls into an established back-catalog period.
Armor Fossil Shieldon (#98) is one of the Uncommon prints in this expansion.
Armor Fossil Shieldon is a Steam Siege card from the 2016 release window. Its card type is Trainer.
The rarity label is Uncommon. It carries a Item subtype designation.
The card text reads: Look at the bottom 7 cards of your deck. You may reveal a Shieldon you find there and put it onto your Bench.
Shuffle the other cards back into your deck. You may play as many Item cards as you like during your turn (before your attack).
Armor Fossil Shieldon from Steam Siege is currently trading around $0.17. Its 7-day movement is largely flat at 0.0%.
Current value is elevated versus the 30-day mean ($0.16), by 9.2%. Its 90-day trading band runs between $0.11 and $0.18, producing a 41% range and moderate-volatility behavior.
The listed rarity for this print is Uncommon.
Pricing context for collectors: Short-term movement is stable (0.0% over 7 days), with price action clustered near recent averages. The 90-day range spans $0.11 to $0.18 (41% spread), which indicates moderate-volatility behavior.
Current value is 9.2% above its 30-day reference ($0.16). Without a consistent graded comp in the current snapshot, live listings are still required for reliable condition-based valuation.