XY Steam Siege – Pokémon TCG Card List & Set Guide (2016)

XY Steam Siege (爆熱の闘士 · 冷酷の反逆者) Trading Card Game Set E116 / J113
General information

Cards	English: 116 Japanese: 113
Series	XY BREAK Series
Primary Focus	Mega Evolution Pokémon-EX
Previous Expansion	XY Fates Collide
Following Expansion	XY Evolutions
Associated Decks	Gears of Fire Ring of Lightning
Released	August 3rd, 2016 (English) June 17th, 2016 (Japanese)

Overview

Released on August 3, 2016, XY—Steam Siege was the eleventh and penultimate XY-era expansion, and it tied directly into the 2016 movie Volcanion and the Mechanical Magearna. The 114-card main set (plus two secret rares) is themed around “dual powers” — steam and gears — and headlined by the Mythical Volcanion and the newly revealed Magearna.

The set gave the BREAK Evolution mechanic its biggest single-set send-off with seven new BREAK cards, alongside two Mega Evolutions (M Steelix-EX and M Gardevoir-EX) and a deep bench of Pokémon-EX. Two theme decks — Gears of Fire (Fire/Metal) and Ring of Lightning (Psychic/Lightning) — shipped with it.

Steam Siege turned out to be one of the more competitively important sets of the era, thanks largely to a single Metal-type Pokémon-EX whose Ability would define the format for years to come.

From the official set description:

Dual Powers Clash! Long years of stability come to an end when Shiny Mega Gardevoir-EX lays siege to the mighty Gear Palace with a host of greedy forces. The Mythical Steam Pokémon Volcanion must wield the dual powers of fire and water to stop them! As the battle rages, Xerneas BREAK and Yveltal BREAK face off in the Pokémon TCG: XY—Steam Siege expansion!

Seven New BREAK Cards

No set added more to the BREAK Evolution line than Steam Siege, which introduced seven BREAK cards spanning nearly every type.

Yveltal BREAK (#66)

The pick of the litter. Sitting on Yveltal, Yveltal BREAK’s Darkraid scaled with Darkness Energy in play, giving Dark decks a heavy-hitting evolving attacker and the set’s most competitively relevant BREAK.

Talonflame BREAK (#21)

Speed and reach. Talonflame BREAK brought fast, flexible Fire pressure and fit neatly into the aggressive Fire strategies the set encouraged.

Clawitzer BREAK (#35)

Water artillery. Clawitzer BREAK offered ranged Water damage and Ability support, a fun toolbox piece for Water builds.

The quartet is completed by Yanmega BREAK (#8), Pyroar BREAK (#24), Xerneas BREAK (#82) and Hydreigon BREAK (#87) — seven in all, the mechanic’s widest spread in any single expansion.

Mega Evolutions

Steam Siege carried two Mega Evolutions, both tied to the set’s steam-and-gears identity.

M Steelix-EX (#68)

An iron wall. M Steelix-EX brought a massive HP pool and Metal-type bulk, anchoring the “Gears of Fire” side of the set’s dual-power theme.

M Gardevoir-EX (#79)

Fairy firepower. M Gardevoir-EX offered a hard-hitting Fairy attacker whose damage climbed with the Energy in play — and whose Shiny version fronts the set’s box art and story.

The Movie Stars: Volcanion & Magearna

Steam Siege’s marquee pair comes straight from the 2016 film, and both proved far more than movie cameos.

Volcanion-EX (#26)

The Fire engine. Volcanion-EX’s Steam Up Ability let players pump extra damage into Fire attackers, and paired with the basic Volcanion it powered a genuinely top-tier Fire deck for much of 2016–2017.

Magearna-EX (#75)

The most important card in the set. Magearna-EX’s Soul Heart Ability accelerated an Energy every time any Pokémon was Knocked Out — a quiet, format-defining engine that propped up Metal and Fairy decks and stayed relevant for years.

More Powerful Pokémon-EX

Beyond the movie duo, Steam Siege is stacked with playable Pokémon-EX.

Gardevoir-EX (#78)

Fairy backbone. The Stage-1-style Gardevoir-EX line gave Fairy decks a reliable attacker and the base for its Mega Evolution.

Steelix-EX (#67)

Metal muscle. Steelix-EX provided a durable Metal-type body and the springboard for M Steelix-EX.

Products & Print Versions

Steam Siege shipped in four booster pack artworks — Volcanion, Gardevoir, Xerneas and Yveltal — sold in booster boxes and retail blisters. The Elite Trainer Box carried the Volcanion branding, and Volcanion and Gardevoir pin blisters rounded out the line-up. (The sell sheet opens full size in a new tab.)

Complete Set List

Card Image	No.	Card name	Rarity	Card type
	1/114	Tangela
	Card text Slam 30 Flip 2 coins. This attack does 30 damage times the number of heads. Mega Drain 40 Heal 20 damage from this Pokemon.
	2/114	Tangrowth
	Card text Leaf Storm 80 Heal 40 damage from each of your Grass Pokemon. Flog 110+ Flip a coin. If heads, this attack does 30 more damage.
	3/114	Hoppip
	Card text Splash 10
	4/114	Skiploom
	Card text Splash 20
	5/114	Jumpluff
	Card text Fluffy Transport Switch 1 of your opponent’s Benched Pokemon with his or her Active Pokemon. Solar Step 20 This attack does 20 damage times the number of your remaining Prize cards.
	6/114	Yanma
	Card text Scout Your opponent reveals his or her hand. Speed Dive 40
	7/114	Yanmega
	Card text Sonic Vision If you have exactly 4 cards in your hand, ignore all Energy in the attack cost of each of this Pokemon’s attacks. Assault Boom 50+ If your opponent’s Active Pokemon has a Pokemon Tool card attached to it, this attack does 70 more damage.
	8/114	Yanmega
	Card text Yanmega BREAK retains the attacks, Abilities, Weakness, Resistance, and Retreat Cost of its previous Evolution. Barrier Break 100 This attack’s damage isn’t affected by Weakness, Resistance, or any other effects on your opponent’s Active Pokemon.
	9/114	Seedot
	Card text Bide Flip a coin. If heads, if this Pokemon would be Knocked Out by damage from an attack during your opponent’s next turn, it is not Knocked Out and its remaining HP becomes 10 instead.
	10/114	Nuzleaf
	Card text Harden During your opponent’s next turn, if this Pokemon would be damaged by an attack, prevent that attack’s damage done to this Pokemon if that damage is 60 or less. Razor Leaf 20
	11/114	Shiftry
	Card text Wicked Wind 40 Until the end of your opponent’s next turn, each Stadium or Pokemon Tool card in play has no effect. (This includes cards that come into play on that turn.) Extrasensory 60+ If you have the same number of cards in your hand as your opponent, this attack does 60 more damage.
	12/114	Foongus
	Card text Play Ball When you play this Pokemon from your hand onto your Bench, you may put 3 Poke Ball cards from your discard pile into your hand. Ram 10
	13/114	Amoonguss
	Card text Crazy Spore Your opponent’s Active Pokemon is now Confused and Poisoned. Strange Reaction 30 If your opponent’s Active Pokemon is Confused, it is now Paralyzed.
	14/114	Larvesta
	Card text Bug Bite 30
	15/114	Volcarona
	Card text Shimmering Scales 20 Flip a coin. If heads, your opponent’s Active Pokemon is now Confused. If tails, your opponent’s Active Pokemon is now Paralyzed. Power Hurricane 120 Discard all Energy attached to this Pokemon.
	16/114	Ponyta
	Card text Returning Flames Put 2 Fire Energy cards from your discard pile into your hand. Live Coal 10
	17/114	Rapidash
	Card text Rear Kick 30 Fire Blast 70 Discard a Fire Energy attached to this Pokemon.
	18/114	Chimchar
	Card text Scratch 10 Ember 30 Flip a coin. If tails, discard a Fire Energy attached to this Pokemon.
	19/114	Monferno
	Card text Scratch 20 Flare 30
	20/114	Infernape
	Card text Flare Blitz 120 Discard all Fire Energy attached to this Pokemon. Flare Up 200 If you have fewer than 10 Fire Energy cards in your discard pile, this attack does nothing. Shuffle 10 Fire Energy cards from your discard pile into your deck.
	21/114	Talonflame
	Card text Talonflame BREAK retains the attacks, Abilities, Weakness, Resistance, and Retreat Cost of its previous Evolution. Flare Blitz 150 Discard all Fire Energy attached to this Pokemon.
	22/114	Litleo
	Card text Lunge 30 Flip a coin. If tails, this attack does nothing.
	23/114	Pyroar
	Card text Flame Charge 60 Search your deck for a Fire Energy card and attach it to this Pokemon. Shuffle your deck afterward. Incinerate 90 Before doing damage, discard all Pokemon Tool cards attached to your opponent’s Active Pokemon.
	24/114	Pyroar
	Card text Pyroar BREAK retains the attacks, Abilities, Weakness, Resistance, and Retreat Cost of its previous Evolution. Kaiser Tackle 180 This Pokemon does 50 damage to itself.
	25/114	Volcanion
	Card text Power Heater 20 Choose 2 of your Benched Pokemon. Attach a Fire Energy card from your discard pile to each of those Pokemon. Steam Artillery 100
	26/114	Volcanion
	Card text Steam Up Once during your turn (before your attack), you may discard a Fire Energy card from your hand. If you do, during this turn, your Basic Fire Pokemon’s attacks do 30 more damage to your opponent’s Active Pokemon (before applying Weakness and Resistance). Volcanic Heat 130 This Pokemon can’t attack during your next turn. When a Pokemon-EX has been Knocked Out, your opponent takes 2 Prize cards.
	27/114	Mantine
	Card text Healing Wave Discard as many cards as you like from your hand. Heal 10 damage from this Pokemon for each card you discarded in this way. Dwindling Wave 90- This attack does 90 damage minus 10 damage for each damage counter on this Pokemon.
	28/114	Shellos
	Card text Rain Splash 10
	29/114	Gastrodon
	Card text Sticky Shot 20 During your opponent’s next turn, the Defending Pokemon’s attacks cost Colorless more, and its Retreat Cost is Colorless more. Water Pulse 60 Your opponent’s Active Pokemon is now Asleep.
	30/114	Oshawott
	Card text Water Gun 30
	31/114	Dewott
	Card text Razor Shell 30+ Flip a coin. If heads, this attack does 20 more damage.
	32/114	Samurott
	Card text Ultimate Blade 40 If the damage from this attack reduces your opponent’s Active Pokemon’s HP to 60 or less, that Pokemon is Knocked Out. Pike 90 This attack does 30 damage to 1 of your opponent’s Benched Pokemon. (Don’t apply Weakness and Resistance for Benched Pokemon.)
	33/114	Clauncher
	Card text Double Pincers 10 Flip 2 coins. This attack does 10 damage times the number of heads.
	34/114	Clawitzer
	Card text Mega Boost Once during your turn (before your attack), you may attach a Special Energy card from your hand to 1 of your Mega Evolution Pokemon. Crabhammer 60
	35/114	Clawitzer
	Card text Clawitzer BREAK retains the attacks, Abilities, Weakness, Resistance, and Retreat Cost of its previous Evolution. Lock-On The Defending Pokemon can’t retreat during your opponent’s next turn. During your next turn, any damage done to that Pokemon by attacks is increased by 120 (after applying Weakness and Resistance).
	36/114	Bergmite
	Card text Ice Block Heal 30 damage from this Pokemon. Icy Snow 20
	37/114	Avalugg
	Card text Crunch 30 Flip a coin. If heads, discard an Energy attached to your opponent’s Active Pokemon. Melting Floe Discard the top 3 cards of your deck. For each Water Energy card you discarded in this way, discard the top 3 cards of your opponent’s deck.
	38/114	Mareep
	Card text Thunder Wave Flip a coin. If heads, your opponent’s Active Pokemon is now Paralyzed. Tackle 20
	39/114	Flaaffy
	Card text Ram 20 Thunder Shock 50 Flip a coin. If heads, your opponent’s Active Pokemon is now Paralyzed.
	40/114	Ampharos
	Card text Shocking Light Once during your turn (before your attack), you may put 3 damage counters on 1 of your opponent’s Pokemon-EX. Gigavolt 80+ Flip a coin. If heads, this attack does 40 more damage. If tails, your opponent’s Active Pokemon is now Paralyzed.
	41/114	Joltik
	Card text Attach 10
	42/114	Galvantula
	Card text Double Thread This attack does 30 damage to 2 of your opponent’s Pokemon. Also apply Weakness and Resistance for Benched Pokemon. Electroweb 30 The Defending Pokemon can’t retreat during your opponent’s next turn.
	43/114	Nidorina‚
	Card text Come Along Search your deck for Nidoranâ™€ and put it onto your Bench. Shuffle your deck afterward. Peck 20
	44/114	Nidorino
	Card text Peck 20 Nido Press 40+ If Nidorina is on your Bench, this attack does 40 more damage.
	45/114	Nidoking
	Card text King’s Palace Your Nidoqueen’s attacks do 20 more damage to your opponent’s Active Pokemon (before applying Weakness and Resistance). Power Lariat 60+ This attack does 30 more damage for each Evolution Pokemon on your Bench.
	46/114	Drifloon
	Card text Transfer Pain Move 1 damage counter from 1 of your Pokemon to 1 of your opponent’s Pokemon.
	47/114	Drifblim
	Card text Eerie Wave 30 Your opponent’s Active Pokemon is now Confused. Burst Curse Discard 2 Energy attached to this Pokemon. Put 8 damage counters on your opponent’s Pokemon in any way you like.
	48/114	Litwick
	Card text Slightly Simmer Search your deck for up to 2 cards and discard them. Shuffle your deck afterward.
	49/114	Lampent
	Card text Mirror Mirror Each player either draws or discards cards until that player has 4 cards in his or her hand. (Your opponent does this first.) Flickering Flames 20 Your opponent’s Active Pokemon is now Asleep.
	50/114	Chandelure
	Card text Sinister Selection Once during your turn (before your attack), you may look at the top 2 cards of your deck and put 1 of them into your hand. Discard the other card. Past Friends 10+ This attack does 10 more damage for each Supporter card in your discard pile.
	51/114	Hoopa
	Card text Hyperspace Punch This attack does 20 damage to 2 of your opponent’s Pokemon. (Don’t apply Weakness and Resistance for Benched Pokemon.) Portal Strike 130 This Pokemon can’t use Portal Strike during your next turn.
	52/114	Mankey
	Card text Focus Energy During your next turn, this Pokemon’s Flop attack’s base damage is 50. Flop 10
	53/114	Primeape
	Card text Swagger 20 Flip a coin. If heads, discard an Energy attached to your opponent’s Active Pokemon. Spirited Throw 30+ If, before doing damage, your opponent’s Active Pokemon has more remaining HP than this Pokemon, this attack does 60 more damage.
	54/114	Nosepass
	Card text Thunder Wave Flip a coin. If heads, your opponent’s Active Pokemon is now Paralyzed. Rolling Tackle 40
	55/114	Probopass
	Card text Bounce Back 40 Your opponent switches his or her Active Pokemon with 1 of his or her Benched Pokemon. Rock Tomb 80 The Defending Pokemon can’t retreat during your opponent’s next turn.
	56/114	Anorith
	Card text Restored Barrier Each of your Restored Pokemon has no Weakness. X-Scissor 20+ Flip a coin. If heads, this attack does 20 more damage.
	57/114	Armaldo
	Card text Rushing Water 40 Move an Energy from your opponent’s Active Pokemon to 1 of his or her Benched Pokemon. Guard Claw 100 During your opponent’s next turn, any damage done to this Pokemon by attacks is reduced by 30 (after applying Weakness and Resistance).
	58/114	Croagunk
	Card text Poison Up If the Defending Pokemon is Poisoned, put 3 more damage counters on that Pokemon between turns. This effect can be applied more than once.
	59/114	Toxicroak
	Card text Poison Enzyme Prevent all damage done to this Pokemon by attacks from your opponent’s Poisoned Pokemon. Poison Jab 50 Flip a coin. If heads, your opponent’s Active Pokemon is now Poisoned.
	60/114	Sneasel
	Card text Nyan Roll 10 Flip a coin. If heads, prevent all effects of attacks, including damage, done to this Pokemon during your opponent’s next turn.
	61/114	Weavile
	Card text Tear Away As often as you like during your turn (before your attack), you may put a Pokemon Tool card attached to 1 of your Pokemon into your hand. Slash 40
	62/114	Spiritomb
	Card text Nightmare 10 Your opponent’s Active Pokemon is now Asleep. Damage Play Move as many damage counters on your opponent’s Benched Pokemon as you like to any of your opponent’s other Pokemon in any way you like.
	63/114	Pawniard
	Card text Charge Order 10x This attack does 10 damage times the number of your Pawniard.
	64/114	Bisharp
	Card text Retaliate 30+ If any of your Pokemon were Knocked Out by damage from an opponent’s attack during his or her last turn, this attack does 60 more damage. Mach Claw 60 This attack’s damage isn’t affected by Resistance.
	65/114	Yveltal
	Card text Oblivion Wing 30 Attach a Darkness Energy card from your discard pile to 1 of your Benched Pokemon. Darkness Blade 100 Flip a coin. If tails, this Pokemon can’t attack during your next turn.
	66/114	Yveltal
	Card text Yveltal BREAK retains the attacks, Abilities, Weakness, Resistance, and Retreat Cost of its previous Evolution. Baleful Night 120 This attack does 30 damage to each of your opponent’s Benched Pokemon that has any damage counters on it. (Don’t apply Weakness and Resistance for Benched Pokemon.)
	67/114	Steelix
	Card text Wild Edge 80+ You may do 50 more damage. If you do, this Pokemon does 20 damage to itself. Iron Tail 100 Flip a coin until you get tails. This attack does 100 damage times the number of heads. When a Pokemon-EX has been Knocked Out, your opponent takes 2 Prize cards.
	68/114	Mega Steelix
	Card text When 1 of your Pokemon becomes a Mega Evolution Pokemon, your turn ends. Canyon Axe 160 This attack does 10 damage to each of your opponent’s Benched Pokemon. (Don’t apply Weakness and Resistance for Benched Pokemon.) When a Pokemon-EX has been Knocked Out, your opponent takes 2 Prize cards.
	69/114	Shieldon
	Card text Rock Head 20 During your opponent’s next turn, any damage done to this Pokemon by attacks is reduced by 20 (after applying Weakness and Resistance). Hammer In 60
	70/114	Bastiodon
	Card text Counter Head During your opponent’s next turn, if this Pokemon is damaged by an attack (even if this Pokemon is Knocked Out), put damage counters on the Attacking Pokemon equal to the damage done to this Pokemon. Fortress of Rage 100+ This attack does 10 more damage for each of your Benched Pokemon that has any damage counters on it.
	71/114	Klink
	Card text Disorderly Flip 10 Flip 4 coins. This attack does 10 damage times the number of heads.
	72/114	Klang
	Card text Vice Grip 30 Disorderly Flip 30 Flip 4 coins. This attack does 30 damage times the number of heads.
	73/114	Klinklang
	Card text Heavy Bumper Any damage done to this Pokemon by an opponent’s attack is reduced by 10 for each Colorless in your opponent’s Active Pokemon’s Retreat Cost (after applying Weakness and Resistance). Gear Spinner 70 During your next turn, this Pokemon’s Gear Spinner attack does 70 more damage (before applying Weakness and Resistance).
	74/114	Cobalion
	Card text Quick Guard Prevent all damage done to this Pokemon by attacks from Basic Pokemon during your opponent’s next turn. This Pokemon can’t use Quick Guard during your next turn. Revenge Blast 30+ This attack does 30 more damage for each Prize card your opponent has taken.
	75/114	Magearna
	Card text Mystic Heart Prevent all effects of your opponent’s attacks, except damage, done to each of your Pokemon that has any Metal Energy attached to it. (Existing effects are not removed.) Soul Blaster 120 During your next turn, this Pokemon’s Soul Blaster attack’s base damage is 60. When a Pokemon-EX has been Knocked Out, your opponent takes 2 Prize cards.
	76/114	Marill
	Card text Bubble Drain 10 Heal 10 damage from this Pokemon.
	77/114	Azumarill
	Card text Play Rough 30+ Flip a coin. If heads, this attack does 30 more damage. Bubble Drain 80 Heal 30 damage from this Pokemon.
	78/114	Gardevoir
	Card text Link Blast 30+ If this Pokemon and your opponent’s Active Pokemon have the same amount of Energy attached to them, this attack does 70 more damage. Luminous Blade 120 Discard an Energy attached to this Pokemon. When a Pokemon-EX has been Knocked Out, your opponent takes 2 Prize cards.
	79/114	Mega Gardevoir
	Card text When 1 of your Pokemon becomes a Mega Evolution Pokemon, your turn ends. Despair Ray 110+ Discard as many of your Benched Pokemon as you like. This attack does 10 more damage for each Benched Pokemon you discarded in this way. When a Pokemon-EX has been Knocked Out, your opponent takes 2 Prize cards.
	80/114	Klefki
	Card text Wonder Lock Once during your turn (before your attack), if this Pokemon is on your Bench, you may discard all cards attached to this Pokemon and attach it to 1 of your Pokemon as a Pokemon Tool card. Prevent any damage done to the Pokemon this card is attached to by attacks from your opponent’s Mega Evolution Pokemon. If this card is attached to a Pokemon, discard this card at the end of your opponent’s turn. Fairy Wind 30
	81/114	Xerneas
	Card text Geomancy Choose 2 of your Benched Pokemon. For each of those Pokemon, search your deck for a Fairy Energy card and attach it to that Pokemon. Shuffle your deck afterward. Rainbow Spear 100 Discard an Energy attached to this Pokemon.
	82/114	Xerneas
	Card text Xerneas BREAK retains the attacks, Abilities, Weakness, Resistance, and Retreat Cost of its previous Evolution. Life Stream 20 This attack does 20 damage times the amount of Energy attached to all of your Pokemon.
	83/114	Druddigon
	Card text Proud Fang 20+ If your opponent has any Pokemon BREAK in play, this attack does 60 more damage. Giga Claw 100 Flip 2 coins. If both of them are tails, this attack does nothing.
	84/114	Deino
	Card text Roar Your opponent switches his or her Active Pokemon with 1 of his or her Benched Pokemon. Headbutt Bounce 20
	85/114	Zweilous
	Card text Double Hit 20 Flip 2 coins. This attack does 20 damage times the number of heads. Power Breath 80 Discard an Energy attached to this Pokemon.
	86/114	Hydreigon
	Card text Cruel Fang 40 During your opponent’s next turn, any damage done by attacks from the Defending Pokemon is reduced by 40 (before applying Weakness and Resistance). Dark Burn 50 Discard as many Darkness Energy attached to your Pokemon as you like. This attack does 50 damage times the amount of Darkness Energy you discard in this way.
	87/114	Hydreigon
	Card text Hydreigon BREAK retains the attacks, Abilities, Weakness, Resistance, and Retreat Cost of its previous Evolution. Calamity Blast 150 Discard 3 Energy attached to this Pokemon. This attack does 50 damage to 2 of your opponent’s Benched Pokemon. (Don’t apply Weakness and Resistance for Benched Pokemon.)
	88/114	Meowth
	Card text Stall You can use this attack only if you go second, and only on your first turn. Discard an Energy attached to 1 of your opponent’s Pokemon. Scratch 20
	89/114	Persian
	Card text Raid 30+ If this Pokemon evolved from Meowth during this turn, this attack does 30 more damage. Fury Swipes 30 Flip 3 coins. This attack does 30 damage times the number of heads.
	90/114	Aipom
	Card text Fiddle Around Look at the top 3 cards of your opponent’s deck and put them back in any order. Tail Jab 20
	91/114	Ambipom
	Card text Furry Chance 20+ Discard the top card of your opponent’s deck. If that card is an Energy card, this attack does 60 more damage. Double Hit 50 Flip 2 coins. This attack does 50 damage times the number of heads.
	92/114	Rufflet
	Card text Reckless Charge 20 This Pokemon does 10 damage to itself.
	93/114	Braviary
	Card text Ambush 20+ Flip a coin. If heads, this attack does 50 more damage. Sky Drop 120- This attack does 120 damage minus 20 damage for each in your opponent’s Active Pokemon’s Retreat Cost.
	94/114	Fletchling
	Card text Peck 20
	95/114	Fletchinder
	Card text Glide 30
	96/114	Talonflame
	Card text Gale Wings If this Pokemon is in your hand when you are setting up to play, you may put it face down as your Active Pokemon. Aero Blitz 40 Search your deck for up to 2 cards and put them into your hand. Shuffle your deck afterward.
	97/114	Hawlucha
	Card text Sudden Cyclone When you play this Pokemon from your hand onto your Bench, you may have your opponent switch his or her Active Pokemon with 1 of his or her Benched Pokemon. Acrobatics 20+ Flip 2 coins. This attack does 20 more damage for each heads.
	98/114	Armor Fossil Shieldon		I
	Card text 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).
	99/114	Captivating Poke Puff		I
	Card text Your opponent reveals his or her hand. Put any number of Basic Pokemon you find there onto your opponent’s Bench. You may play as many Item cards as you like during your turn (before your attack).
	100/114	Claw Fossil Anorith		I
	Card text Look at the bottom 7 cards of your deck. You may reveal an Anorith 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).
	101/114	Gardevoir Spirit Link		I
	Card text Attach a Pokemon Tool to 1 of your Pokemon that doesn’t already have a Pokemon Tool attached to it. Your turn does not end if the Pokemon this card is attached to becomes M Gardevoir-EX. You may play as many Item cards as you like during your turn (before your attack).
	102/114	Greedy Dice		I
	Card text You can play this card only if you took it as a face-down Prize card, before you put it into your hand. Flip a coin. If heads, take 1 more Prize card. You may play as many Item cards as you like during your turn (before your attack).
	103/114	Ninja Boy		Su
	Card text Choose 1 of your Basic Pokemon in play. Search your deck for a Basic Pokemon and switch it with that Pokemon. (Any attached cards, damage counters, Special Conditions, turns in play, and any other effects remain on the new Pokemon.) Shuffle the first Pokemon into your deck. You may play only 1 Supporter card during your turn (before your attack).
	104/114	Pokemon Ranger		Su
	Card text Remove all effects of attacks on each player and his or her Pokemon. You may play only 1 Supporter card during your turn (before your attack)
	105/114	Special Charge		I
	Card text Shuffle 2 Special Energy cards from your discard pile into your deck. You may play as many Item cards as you like during your turn (before your attack).
	106/114	Steelix Spirit Link		I
	Card text Attach a Pokemon Tool to 1 of your Pokemon that doesn’t already have a Pokemon Tool attached to it. Your turn does not end if the Pokemon this card is attached to becomes M Steelix-EX. You may play as many Item cards as you like during your turn (before your attack).
	107/114	Volcanion
	Card text Steam Up Once during your turn (before your attack), you may discard a Fire Energy card from your hand. If you do, during this turn, your Basic Fire Pokemon’s attacks do 30 more damage to your opponent’s Active Pokemon (before applying Weakness and Resistance). Volcanic Heat 130 This Pokemon can’t attack during your next turn. When a Pokemon-EX has been Knocked Out, your opponent takes 2 Prize cards.
	108/114	Steelix
	Card text Wild Edge 80+ You may do 50 more damage. If you do, this Pokemon does 20 damage to itself. Iron Tail 100 Flip a coin until you get tails. This attack does 100 damage times the number of heads. When a Pokemon-EX has been Knocked Out, your opponent takes 2 Prize cards.
	109/114	Mega Steelix
	Card text When 1 of your Pokemon becomes a Mega Evolution Pokemon, your turn ends. Canyon Axe 160 This attack does 10 damage to each of your opponent’s Benched Pokemon. (Don’t apply Weakness and Resistance for Benched Pokemon.) When a Pokemon-EX has been Knocked Out, your opponent takes 2 Prize cards.
	110/114	Magearna
	Card text Mystic Heart Prevent all effects of your opponent’s attacks, except damage, done to each of your Pokemon that has any Metal Energy attached to it. (Existing effects are not removed.) Soul Blaster 120 During your next turn, this Pokemon’s Soul Blaster attack’s base damage is 60. When a Pokemon-EX has been Knocked Out, your opponent takes 2 Prize cards.
	111/114	Gardevoir
	Card text Link Blast 30+ If this Pokemon and your opponent’s Active Pokemon have the same amount of Energy attached to them, this attack does 70 more damage. Luminous Blade 120 Discard an Energy attached to this Pokemon. When a Pokemon-EX has been Knocked Out, your opponent takes 2 Prize cards.
	112/114	Mega Gardevoir
	Card text When 1 of your Pokemon becomes a Mega Evolution Pokemon, your turn ends. Despair Ray 110+ Discard as many of your Benched Pokemon as you like. This attack does 10 more damage for each Benched Pokemon you discarded in this way. When a Pokemon-EX has been Knocked Out, your opponent takes 2 Prize cards.
	113/114	Pokemon Ranger		Su
	Card text Remove all effects of attacks on each player and his or her Pokemon. You may play only 1 Supporter card during your turn (before your attack).
	114/114	Professor Sycamore		Su
	Card text Discard your hand and draw 7 cards. You may play only 1 Supporter card during your turn (before your attack).
	115/114	Volcanion
	Card text Steam Up Once during your turn (before your attack), you may discard a Fire Energy card from your hand. If you do, during this turn, your Basic Fire Pokemon’s attacks do 30 more damage to your opponent’s Active Pokemon (before applying Weakness and Resistance). Volcanic Heat 130 This Pokemon can’t attack during your next turn. When a Pokemon-EX has been Knocked Out, your opponent takes 2 Prize cards.
	116/114	Gardevoir
	Card text Link Blast 30+ If this Pokemon and your opponent’s Active Pokemon have the same amount of Energy attached to them, this attack does 70 more damage. Luminous Blade 120 Discard an Energy attached to this Pokemon. When a Pokemon-EX has been Knocked Out, your opponent takes 2 Prize cards.

For Collectors: Most Valuable Cards

Steam Siege’s chase sits with its two secret rares and its Full-Art Megas — and, unusually, with a card that was as valuable competitively as it was in the binder.

Gardevoir-EX — Secret Rare (#116)

The top chase. The rainbow secret-rare Gardevoir-EX closes out the set beyond the 114-card base and ties into the box-art Shiny Mega Gardevoir-EX story — the hardest pull in Steam Siege.

Volcanion-EX — Secret Rare (#115)

The movie star, in rainbow. The secret-rare Volcanion-EX is the set’s other big chase, prized by collectors chasing the full Volcanion line.

M Gardevoir-EX (#79)

Fairy centrepiece. As the set’s marquee Mega and the face of its story, M Gardevoir-EX holds strong collector value across its regular and Full-Art printings.

Magearna-EX (#75)

Value that outlived the set. Because it stayed competitively essential for years, Magearna-EX kept unusually high demand for a non-secret card — a rare case of playability driving a single’s price.

Most Powerful Cards (Competitive Play)

Steam Siege punched well above the average set competitively, and its impact was felt for seasons after release.

Magearna-EX (#75)

A format-defining engine. Soul Heart turned every Knock Out — yours or your opponent’s — into free Energy acceleration. It quietly powered Metal and Fairy decks throughout the XY and early Sun & Moon eras and is one of the most influential cards of its generation.

Volcanion-EX (#26)

The Fire deck’s heart. Steam Up let Volcanion-EX stack extra damage onto Fire attackers, and the Volcanion / Volcanion-EX pairing became a top-tier deck that contended at the highest level for over a year.

Gardevoir-EX (#78)

Fairy staple. Gardevoir-EX gave Fairy decks a consistent attacker and evolution base, seeing steady competitive play alongside Magearna-EX.

Yveltal BREAK (#66)

Dark’s evolving threat. Yveltal BREAK slotted into the era’s resilient Darkness decks, adding a high-damage option on top of the popular Yveltal-EX shell.

Trivia & Points of Interest

A movie tie-in. Steam Siege launched alongside the 2016 film Volcanion and the Mechanical Magearna, and both Mythicals headline the set.
Seven BREAKs — a record. No other single expansion added more BREAK cards, making Steam Siege the high-water mark for the mechanic before it was retired.
Magearna-EX’s long shadow. Soul Heart is frequently cited as one of the most important Abilities of its era, later becoming a cornerstone of the powerful Gardevoir-GX decks that followed.
Dual sets in Japan. The cards came from two simultaneous Japanese expansions, Fever-Burst Fighter and Cruel Traitor, both released June 17, 2016.
Shiny Mega Gardevoir-EX fronts the set’s “Gear Palace” story on the packaging, giving Steam Siege one of the more striking box arts of the XY run.

Japanese Sets, Videos & Gallery

In Japan, Steam Siege’s cards were split across two simultaneous expansions released on June 17, 2016: Fever-Burst Fighter (炎の轟き, the Fire/Fighting-leaning half) and Cruel Traitor (闇の抗争, the Darkness/Metal-leaning half). The English Steam Siege combined the two, added secret rares, and arrived about six weeks later.