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Amoonguss.

XY - Steam Siege · 13/114 · Rare
updated Aug 14, 2026
Amoonguss 13/114 from XY - Steam Siege
Raw market value · Reverse Holofoil
$0.42.
near mint, ungraded7 day -2.3% · 30 day -14.3%
Price by printing
Reverse Holofoilthis page$0.42
Normal$0.28
Check live eBay pricesAffiliate link. Prices above are what the card actually sold for, not asking prices.

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The same card in other sets

Black Bolt096/086$45.85Black Bolt011/086$18.23SM PromosSM202$4.81Noble Victories10/101$2.98Plasma Storm13/135$2.51Next Destinies9/99$0.65Black Bolt011/086$0.48SM - Unified Minds14/236$0.40

What moves the price of this card

The Amoonguss on this page is the Reverse Holofoil printing from XY - Steam Siege, and it trades at $0.42 in near mint condition. The other 1 printing of the same card sits lower, which is normal: the scarcer print run always carries the premium.

Condition does most of the work below the surface. A copy with soft corners or a print line off centre trades well under the market price shown here, and a copy clean enough to grade trades well above it. Before you value your own copy, look at the corners under a light and check the centring on the back, where most cards give themselves away.