This attack does 10 damage to each of your opponent's Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)
Release year for Steam Siege is 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.
M Steelix-EX (#109) is one of the Rare Ultra prints in this expansion.
M Steelix-EX is a Steam Siege card from the 2016 release window. Core profile: Its card type is Pokémon.
The rarity label is Rare Ultra. Printed HP is 240.
Energy typing is Metal and Fighting. M Steelix-EX evolves from Steelix-EX.
Printed card effect: Mega Evolution rule: When 1 of your Pokémon becomes a Mega Evolution Pokémon, your turn ends. Pokémon-EX rule: When a Pokémon-EX has been Knocked Out, your opponent takes 2 Prize cards.
Current market pricing for M Steelix-EX (Steam Siege) sits near $24.58. The 7-day delta remains near neutral at 0.0%.
It now sits 6.1% above its 30-day average of $23.18. Its 90-day trading band runs between $22.50 and $27.77, producing a 21% range and moderate-volatility behavior.
The listed rarity for this print is Rare Ultra.
M Steelix-EX sits within a broader pool of M variants that can be compared by set, rarity, and price. Comparable entries in this snapshot: 1 cards, 1 distinct set.
Only one priced comparison is available in this sample ($10.43). Notable alternatives include M Steelix-EX #68 (Steam Siege) at $10.43.
Pricing context for collectors: Weekly drift is minimal (0.0%), indicating a relatively balanced short-term market. With a 21% 90-day spread ($22.50-$27.77), this card currently tracks as moderate-volatility.
Current value is 6.1% above its 30-day reference ($23.18). Top-grade copies show substantial separation from raw: PSA 10 is pricing +943% above the current raw benchmark.
PSA 9 is currently around $52.03, while PSA 10 is $256.33.
