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Xerneas XY31 — what does this card actually do?

This card has 130 HP, a top attack printed at 80 damage and a Metal weakness.

Fairy · Basic · XY Black Star Promos · measured against 20,444 cards on file — card data read July 28, 2026

What does Xerneas XY31 do in a game?

Xerneas XY31 is a Fairy Pokémon card with 130 HP, printed as Basic.

Its strongest attack, Light of Life, is printed at 80 damage for 4 Energy — 20 damage per Energy card.

Because of the Metal weakness, any Metal attack printed at 65 damage or more removes it in a single turn.

Xerneas XY31XY Black Star Promos

Xerneas XY31 performance summary

130 HP · Fairy · Basic · retreat 2 · Metal weakness ×2

Top printed damage8020 per Energy Light of Life80 damage for 4 Energy
as of July 28, 2026
Hit points130 HP15.5% of 17,290 in the 130~180 band
Printed damage8021.8% of 16,246 in the 70~120 band
Retreat cost2 Energy28.6% of 17,240 in the 2 band
Energy efficiencyBelow typicalAboveTypicalBelowThis card 20 · typical 34.7
damage per Energy card, among cards whose cheapest attack costs 3
Price trackPromoXY Black Star Promos23 printsWhat it costs today, how it moved, and where to buy it
Card classBasic
RarityPromo
SetXY Black Star Promos
Card numberXY31
Card data readJuly 28, 2026
How Xerneas XY31 is built, on five measures
Hit points130 HPTop printed damage80 damageEnergy efficiency20 per EnergyRetreat lightness2 EnergyAttack cost lightness3 Energy

Strongest on Hit points — top 28.3% of the archive. Weakest on Attack cost lightness — bottom 17.4%.

Each spoke is this card's place among every card in the archive that prints that figure. Further out is stronger — retreat and attack cost are shown as lightness, so a cheap card reaches outward. Counted July 28, 2026.

How Xerneas XY31 is built, on five measures
MeasurePercentilePrinted value
Hit points71.7%130 HP
Top printed damage68.9%80 damage
Energy efficiency46.1%20 per Energy
Retreat lightness45.3%2 Energy
Attack cost lightness17.4%3 Energy

What it can do

Attack record
  • 3EAurora Gain17 damage per Energy card · has printed text50damage
  • 4ELight of Life20 damage per Energy card · has printed text80damage

2 attacks printed on the card. The badge is the Energy it asks for.

Where it stands

Among the 17,290 cards in every card in the archive that carry printed HP, this one is number 4,029 at 130 HP.

This cardXerneas XY31 — XY Black Star PromosXerneas XY31XY Black Star Promos130 HP

Printed HP

The ceiling of this archive is 380 HP250 HP above this card.

Highest printed HPMega Emboar ex — Ascended HeroesMega Emboar ex 273Ascended Heroes380 HP

What stands out on Xerneas XY31

  • Hit points 130 HP puts it in the 130~180 band, where 15.5% of 17,290 cards with printed HP sit.
  • Energy It returns 20 damage per Energy card against 34.7 for cards whose cheapest attack costs 3.
  • Weakness A Metal attack printed at 65 damage or more removes it in a single turn.
  • Legality 4 of the 22 prints that carry this name are legal in Standard play.

Xerneas XY31 at a glance

  • What it is. A Fairy Pokémon card with 130 HP printed as Basic, printed in XY Black Star Promos.
  • What it can do. 2 attacks printed on the card, the strongest at 80 damage for 4 Energy.
  • What it fears. A Metal weakness at ×2, which means 65 printed damage is enough to remove it.
  • What it costs to move. 2 Energy to retreat, discarded from the card itself.
  • Where it can be played. Unlimited and Expanded only.
  • What this page does not claim. Deck lists, tournament results and win rates are not published here, because the card files this site reads do not contain them.
Source: Card facts are read once from openly published card files and change only when a source corrects them.

What do the attacks on Xerneas XY31 cost, and what do they hit for?

The card prints 2 attacks. The strongest asks for 4 Energy and returns 80 damage, which is 20 damage for every Energy card attached.

Xerneas XY31 — every printed attack, its cost and its damage
AttackEnergy costCards of EnergyPrinted damageDamage per EnergyEffect
Aurora Gain1 Fairy + 2 Colorless35017During your opponent's next turn, this Pokémon has no weakness.
Light of Life2 Fairy + 2 Colorless480+20If your opponent has Yveltal (including Yveltal-EX) in play, this attack does 40 more damage.

Retreating costs a further 2 Energy, discarded from this card, and that cost is paid on top of anything in the table.

Aurora Gain3 Energy cards
Light of Life4 Energy cards

What each attack asks a deck to attach before it can be used, drawn as the symbols printed on the card.

One Energy card attaches per turn, so the number of symbols is also the number of turns the attack waits.

  • Aurora Gain 3 Energy50 damage for 3 Energy — 17 per Energy card50
  • Light of Life 4 Energy80 damage for 4 Energy — 20 per Energy card80

Bars are printed damage against this card's own highest attack (80).

Why one of these damage figures carries a symbol

A number on a Pokémon card is not always the number that lands.

  • Light of Life is printed as 80+, so the printed number is a floor — the attack deals at least that much, and the sentence beside it says what adds to it.
Back to summary

How does Xerneas XY31 compare with every other card?

Each bar below is the whole archive cut by one printed figure, with the band this card falls into marked. A number on its own says nothing about whether it is high or low — the shape of the archive does.

Xerneas XY31 — XY Black Star Promos
XerneasXY Black Star Promos XY31

Xerneas XY31 prints 130 HP, which puts it at number 4,029 of the 17,290 cards in this archive that print an HP figure at all. The tallest figure printed on any card is 380 HP (Mega Emboar ex).

69% on printed damage — it out-hits that share of the 16,246 cards that print damage

  • This card130 HP
  • Middle half of the archive60–130 HP
  • Strongest Xerneas printed130 HP
Mega Emboar ex — Ascended Heroes 273 · the highest printed HP in the archive at 380

The ceiling of this archive is Mega Emboar ex at 380 HP — every bar here is measured against it.

This card prints 130 HP, which is 34% of that ceiling.

Every figure in this panel is counted the same way: from the card files this site reads, read July 28, 2026, over the 17,290 cards that print an HP figure. Each bar is measured against the tallest HP in the archive, 380 HP.

Hit points — where this card sits
~7038.6%6,669 cards
80~12033.1%5,725 cards
130~180 — this card15.5%2,679 cards
190~2306.6%1,148 cards
240~2803.3%567 cards
290~3302.4%412 cards
340+0.5%90 cards

17,290 cards in the archive carry a printed HP figure. This one has 130 HP.

Cards in the 130~180 band typically print 104 damage and ask 2 Energy to retreat.

Hit points — where this card sits
GroupShareValue
~7038.6%6,669 cards
80~12033.1%5,725 cards
130~180 — this card15.5%2,679 cards
190~2306.6%1,148 cards
240~2803.3%567 cards
290~3302.4%412 cards
340+0.5%90 cards
Top printed damage — where this card sits
~3042.7%6,938 cards
40~6022.0%3,566 cards
70~120 — this card21.8%3,535 cards
130~1809.0%1,461 cards
190~2503.8%621 cards
260+0.8%125 cards

16,246 cards print damage on at least one attack. The highest on this card is 80.

Cards in the 70~120 band typically have 141 HP and ask 2 Energy to retreat.

Top printed damage — where this card sits
GroupShareValue
~3042.7%6,938 cards
40~6022.0%3,566 cards
70~120 — this card21.8%3,535 cards
130~1809.0%1,461 cards
190~2503.8%621 cards
260+0.8%125 cards
Cheapest attack cost — where this card sits
01.8%304 cards
154.4%9,392 cards
226.4%4,565 cards
3 — this card14.7%2,533 cards
42.4%421 cards
50.3%47 cards

17,262 cards have at least one attack with an Energy cost. The cheapest on this card asks 3 Energy.

Cards whose cheapest attack costs 3 typically have 153 HP and print 104 damage.

Cheapest attack cost — where this card sits
GroupShareValue
01.8%304 cards
154.4%9,392 cards
226.4%4,565 cards
3 — this card14.7%2,533 cards
42.4%421 cards
50.3%47 cards
Retreat cost — where this card sits
05.3%914 cards
149.3%8,503 cards
2 — this card28.6%4,926 cards
312.6%2,168 cards
44.2%729 cards

17,240 cards carry a retreat cost. This one costs 2 Energy to retreat.

Cards with a retreat cost of 2 typically have 132 HP and print 79 damage.

Retreat cost — where this card sits
GroupShareValue
05.3%914 cards
149.3%8,503 cards
2 — this card28.6%4,926 cards
312.6%2,168 cards
44.2%729 cards

That is where Xerneas XY31 stands highest on HP — number 4,029 of 17,290 cards in Every card in the archive. Cut the archive a different way and the answer moves, which is what the bars below are for.

  • Mega Emboar ex — 380 HP, the highest in this group
    Every card in the archive — 20,444 cards No. 4,029 of 17,290 by HP · No. 4,308 of 16,246 by damage · top by HP: Mega Emboar ex, 380
    top 27% on damage
  • Gardevoir & Sylveon-GX — 260 HP, the highest in this group
    Fairy cards — 237 cards No. 62 of 237 by HP · No. 48 of 220 by damage · top by HP: Gardevoir & Sylveon-GX, 260
    top 21% on damage
  • M Camerupt-EX — 230 HP, the highest in this group
    XY Black Star Promos — 216 cards No. 76 of 194 by HP · No. 94 of 186 by damage · top by HP: M Camerupt-EX, 230
    top 50% on damage

Each bar is how far up this card sits when the archive is cut a different way. The bar is its place on HP; the tick is its place on printed damage. Counted from the card files this site reads, read July 28, 2026.

  • Hit points 130 HPmiddle half 60–130 HP
  • Top printed damage 80 damagemiddle half 20–90 damage
  • Lowest to highest printed in the archive
  • Middle half of the archive
  • This card

Each row is stretched from the lowest printed figure to the highest, so the two rows are not on one shared scale — read each row on its own.

Read from the card files this site reads, July 28, 2026. The archive tops out at 380 HP and 350 printed damage.
Cards in the same HP band
2,679 of 17,290 (15.5%)
Cards with this much printed damage
3,535 of 16,246 (21.8%)
Counted from the card files this site reads, one card at a time.

Open the group this card falls into

Back to summary

Is Xerneas XY31 efficient for the Energy it asks for?

Printed damage on its own says nothing — a 80 damage attack that needs 4 Energy and one that needs two are different cards. Dividing one by the other puts every attack on the same scale.

Damage per Energy card, across the whole archive
1 Energy9,392 cards49.049 damage typical
2 Energy4,565 cards32.565 damage typical
3 Energy2,533 cards34.7104 damage typical
4 Energy421 cards27.8111 damage typical
5 Energy47 cards41.8209 damage typical
Xerneas XY31 — this card20.080 damage for 4 Energy

Each bar is what cards asking that much Energy typically print, divided by the Energy they ask for. The number beside the bar is that figure.

Cards whose cheapest attack costs 3 typically return 34.7 damage per Energy card. This card returns 20.

Damage per Energy card, across the whole archive
GroupShareValue
1 Energy49.049 damage typical
2 Energy32.565 damage typical
3 Energy34.7104 damage typical
4 Energy27.8111 damage typical
5 Energy41.8209 damage typical
Xerneas XY31 — this card20.080 damage for 4 Energy
2501250 damage
012345 Energy
Typical for that Energy cost 6 groupsAurora Gain 50 / 3Light of Life 80 / 4

Further right is a costlier attack, further up is a harder-hitting one, so the cheap and heavy corner is top left. The size of a grey dot is how many cards sit at that Energy cost.

Energy cost against printed damage. Each grey dot is what cards asking that much Energy typically print; the coloured dots are the attacks on Xerneas XY31.
GroupTypical printed damageDamage per Energy cardCards in this group
Cheapest attack costs 0 Energy45304
Cheapest attack costs 1 Energy49499,392
Cheapest attack costs 2 Energy65334,565
Cheapest attack costs 3 Energy104352,533
Cheapest attack costs 4 Energy11128421
Cheapest attack costs 5 Energy2094247
Aurora Gain17
Light of Life20
This card, per Energy card
20 damage
Typical for a 3 Energy attack
34.7 damage
Difference
-14.7 damage
Both figures are damage divided by Energy cost, counted the same way.

Where this sits once the archive is cut by damage instead

The bars above cut the archive by what an attack asks for. Cut the same archive by what an attack prints and the groups come out differently — the damage ranges on record are gathered on one page, which is where a figure like 80 is read as high or low rather than merely large.

Back to summary

What does being a Fairy card do for Xerneas XY31?

Type decides two things at once — which cards take double damage from this one, and which cards deal double to it. Both are read from the weakness printed on each group, not from a rule of thumb.

Deals double to this card 925 Metal cards carry that type A Metal attack printed at 65 damage is enough to remove this card in one turn.
Xerneas XY31 · Basic 130 HP Its hardest attack is printed at 80 damage.
Takes double from this card 530 cards in groups that print a Fairy weakness Against Dragon, printed damage from this card counts double.
How the archive splits by energy type
Psychicmost often weak to Psychic13.5%2,335 cards
Watermost often weak to Lightning14.1%2,435 cards
Colorlessmost often weak to Fighting12.6%2,173 cards
Firemost often weak to Water9.1%1,574 cards
Fightingmost often weak to Grass10.9%1,884 cards
Lightningmost often weak to Fighting8.8%1,520 cards
Grassmost often weak to Fire13.8%2,387 cards
Metalmost often weak to Fire5.4%925 cards
Darknessmost often weak to Fighting7.2%1,249 cards
Dragonmost often weak to Fairy3.1%530 cards
Fairy — this cardmost often weak to Metal1.4%237 cards

17,249 cards carry an energy type. The note under each name is the weakness printed most often on that group.

How the archive splits by energy type
GroupShareValue
Psychic13.5%2,335 cards
Water14.1%2,435 cards
Colorless12.6%2,173 cards
Fire9.1%1,574 cards
Fighting10.9%1,884 cards
Lightning8.8%1,520 cards
Grass13.8%2,387 cards
Metal5.4%925 cards
Darkness7.2%1,249 cards
Dragon3.1%530 cards
Fairy — this card1.4%237 cards
Fairyweak to Metal
Dragonweak to Fairy

Read from the weakness printed on each group. The first row is this card; the rest are groups that most often print a Fairy weakness.

What being a Fairy card is worth

Groups that most often print a Fairy weakness: Dragon (530 cards). Against those, this card's printed damage counts double. Going the other way, Fairy cards are themselves most exposed to Metal.

Back to summary

What knocks out Xerneas XY31 in one hit, and what does it knock out?

Weakness doubles the damage a Metal attack deals to this card, so the bar it has to clear is 65 printed damage rather than 130.

Cards that remove it in one attack
467
Cards it removes in one attack
135
Metal damage needed to knock it out
65
Counted across the whole card archive. 130 HP against a Metal weakness at ×2 decides all three figures.
Removes it in one attackDuraludonDuraludonPhantasmal Flames 7470 damage
×2Metal weakness · 65 printed damage is enough
70 damage becomes 140 against this card
This cardXerneas XY31Xerneas XY31XY Black Star Promos XY31130 HP

Why this card was picked to stand opposite

Of the 464 cards in the archive that can remove Xerneas XY31 in a single attack, this one clears the bar by the smallest margin — 70 printed damage against a bar of 65. Anything printed higher removes it just as surely, so this is where the line actually sits, and this print is legal in Standard play today.

Xerneasweak to Metal ×2
Xerneasresists Darkness -20

Read from the two boxes in the lower-left corner of the card — weakness multiplies incoming damage, resistance subtracts from it.

What the Darkness resistance changes

Damage from Darkness attacks is reduced before it is applied, so an attack printed high enough to knock this card out on paper may not do it. Resistance is a flat subtraction, not a multiplier — it does not scale with the attack.

Metal cards that remove Xerneas in one attack
CardSetHPPrinted damageAfter weakness
Zacian V-UNION (SWSH163)SWSH Black Star Promos320340680
Zacian V-UNION (SWSH164)SWSH Black Star Promos320340680
Zacian V-UNION (SWSH165)SWSH Black Star Promos320340680
Zacian V-UNION (SWSH166)SWSH Black Star Promos320340680
Zacian VSTAR (96)Crown Zenith270310620
Aggron VMAX (97)Brilliant Stars330270540

130 HP against a Metal ×2 weakness means any Metal attack printed at 65 damage or more is enough. 467 cards in the archive clear that bar.

Cards this one removes in a single attack

135 cards in the archive are weak to Fairy and sit inside the damage this card can deal. Point at a card to see it full size.Tap a card to open its page.

Back to summary

What is Xerneas as a Pokémon, across every card it has been printed on?

Xerneas XY31 is one print of Xerneas. The figures below are about the Pokémon rather than this single card — how many times it has been printed, how tough those prints run, and how many of them can still be played.

Xerneas has been printed 23 times, and the printed numbers move from one print to the next. Point at a card to see it full size.Tap a card to open its page.
The three toughest Xerneas cards ever printedPokédex #716Prints on record 23Toughest print 180 HPThis card 130 HP
23prints
Legal in Standard4Older prints, not in Standard19

Every Xerneas print on record, split by whether it can still be entered in Standard play.

Legality is read from the print rather than from the Pokémon, so an older copy of the same Pokémon is a different card for tournament purposes.

The toughest Xerneas printed is 180 HP, and this card is 72.2% of it

Bars are printed HP, measured against the record for this Pokémon
  • Xerneas-GX 139/131the toughest Xerneas ever printedSM - Forbidden Light180 HP
  • Xerneas XY31against that record72.2% of the record130 HP

Read from the printed card face of every Xerneas print on record. Printed HP does not change after a card is issued.

Back to summary

Is this the strongest Xerneas print, and can the older ones still be played?

23 prints carry this name in the archive, and 22 of them are laid out below. They share a Pokémon but not a card — printed HP, printed damage and tournament legality all move from one print to the next.

Bar height and the number above each bar = highest HP that year; the two digits below = the year.

Rows run from the toughest print down. Bars are printed HP, measured against the toughest print of this name shown here (180 HP), and the highlighted row is the card this page is about.

22 rows are shown of the 23 prints counted under this name.

Xerneas prints — can each one still be played?
PrintSetRegulation markStandard
Xerneas-GX 139/131SM - Forbidden LightNo mark printedNot legal in Standard
Xerneas-GX 126/131SM - Forbidden LightNo mark printedNot legal in Standard
Xerneas-GX 90/131SM - Forbidden LightNo mark printedNot legal in Standard
Xerneas-EX 146/146XY Base SetNo mark printedNot legal in Standard
Xerneas-EX 97/146World Championship DecksNo mark printedNot legal in Standard
Xerneas-EX XY149XY PromosNo mark printedNot legal in Standard
Xerneas-EX XY07XY PromosNo mark printedNot legal in Standard
Xerneas-EX 97/146Celebrations: Classic CollectionNo mark printedNot legal in Standard
Xerneas ◇ 144/214SM - Lost ThunderNo mark printedNot legal in Standard
Xerneas BREAK 82/114XY - Steam SiegeNo mark printedNot legal in Standard
Xerneas 96/146World Championship DecksNo mark printedNot legal in Standard
Xerneas XY05XY PromosNo mark printedNot legal in Standard
Xerneas 091/086ME04: Chaos RisingMark JLegal in Standard
Xerneas XY31XY PromosNo mark printedNot legal in Standard
Xerneas 081/114League & Championship CardsNo mark printedNot legal in Standard
Xerneas 73/111SM - Crimson InvasionNo mark printedNot legal in Standard
Xerneas 078/185SWSH04: Vivid VoltageMark DNot legal in Standard
Xerneas 088/191SV08: Surging SparksMark HLegal in Standard
Xerneas 042/086ME04: Chaos RisingMark JLegal in Standard
Xerneas 064/132Miscellaneous Cards & ProductsMark ILegal in Standard
Xerneas 107/162Blister ExclusivesNo mark printedNot legal in Standard
Xerneas 012/025CelebrationsMark ENot legal in Standard

4 of the 22 prints listed here are legal in Standard play. An older print of the same Pokémon is a different card for legality, because legality is read from the print rather than from the name — so owning the cheap old copy does not always mean you can enter with it.

Back to summary

Every card below carries the same Pokédex number as this one, so they are the same Pokémon printed as different cards — different stages, different mechanics and different names all sit in this group.

Back to summary

What was printed next to Xerneas XY31 in XY Black Star Promos?

A card is met inside a set, not on its own, and the number on it is the order that set gave it. The cards either side are the ones a collector actually turns past to reach this one.

Cards printed either side of this one

These are the cards numbered either side of #XY31 in XY Black Star Promos. The badge on each card is its printed HP. Point at a card to see it full size.Tap a card to open its page.

Back to summary

Which rules apply to Xerneas XY31, and where can it be played?

Two kinds of rule meet on one card — the sentence printed on the card face, and the rulebook clauses that apply because of what the card carries.

Rulebook clauses that apply to Xerneas XY31
ClauseWhat the rulebook saysCards it applies toShare of the archive
WeaknessSome Pokemon have Weakness or Resistance to Pokemon of certain types, marked in the lower-left corner of the card.16,744 cards81.9%
RetreatRetreat your Active Pokemon (only once per turn).17,244 cards84.3%
Energy per turnYou can attach Energy just once each turn!17,180 cards84.0%

Counted across 20,444 English cards. A clause applies to this card because the card carries the property the clause names, not because we judged it to.

Xerneas XY31 — tournament formats
FormatStatusWhat that means
StandardNot listedThis card is not listed for this format
ExpandedLegalCan be played in this format
UnlimitedLegalCan be played in this format

Read from the format list recorded with the card. Formats rotate on a schedule set by the organiser, and that schedule is not published on this page.

Where this card can be played

This card is legal in Unlimited and Expanded play. It was released on October 12, 2013.

Back to summary

Xerneas XY31 in depth — what these figures add up to

Three readings of the same card, side by side: what it costs to get going, where it sits among the cards it will be compared with, and what takes it off the field.

What it asks a deck for

  • Its hardest attack, Light of Life, needs 4 Energy attached. Energy attaches once a turn, so that attack waits 4 turns from an empty card.
  • That works out at 20 damage for every Energy card attached.
  • Moving it out of the active spot costs 2 more Energy, discarded from the card itself.

Where its HP stands, cut four ways

Every card in the archiveNo. 4,029 of 17,290
Fairy cardsNo. 62 of 237
XY Black Star PromosNo. 76 of 194

What actually removes it

  • A Metal attack printed at 65 damage removes it in a single turn — that is the bar, not its 130 HP.
  • 467 cards in the archive clear that bar.
  • Going the other way, it removes 135 cards in one attack.
  • Damage from Darkness attacks is reduced before it is applied, so an attack that clears the bar on paper may still fall short.
Back to summary

Xerneas XY31 card record

Xerneas XY31 — the printed record, field by field
Hit points130 HPTypeFairy
WeaknessMetal ×2Retreat cost2 Energy
Card typeBasicPokédex number#716
SetXY Black Star PromosCard numberXY31 of 211
SeriesXYReleasedOctober 12, 2013
RarityPromoIllustratorKouki Saitou
Tournament legalityUnlimited and Expanded only

Read from the printed card face, the set listing and the official format list.

Back to summary

What does Xerneas XY31 cost?

This page is about what the card does. The figure below is the one number worth carrying across, read on August 14, 2026.

Market price today
$3.86
Read on
August 14, 2026
One figure only — the price record, the daily chart and the marketplaces live on the price page.
Back to summary

Xerneas XY31 — frequently asked questions

How much damage does it take to knock out Xerneas XY31?

Xerneas XY31 has 130 HP and a Metal weakness at ×2, so a Metal attack printed at 65 damage or more removes it in one turn. Any other type has to print the full 130.

What is the strongest attack on Xerneas XY31?

Light of Life, printed at 80 damage for 4 Energy — 20 damage per Energy card. If your opponent has Yveltal (including Yveltal-EX) in play, this attack does 40 more damage.

What is the retreat cost of Xerneas XY31?

2 Energy, discarded from this card to move it out of the active spot. Retreating is allowed once per turn.

What does the + after the damage on Light of Life mean?

It marks the damage as conditional: the printed figure is the least it can deal, and the sentence on the card says what is added to it. The full sentence is printed on the card and quoted in the attack table on this page — "If your opponent has Yveltal (including Yveltal-EX) in play, this attack does 40 more damage."

Can an older Xerneas print be played in a tournament?

Legality is read from the print, not from the Pokémon. Of the 22 prints listed on this page, 4 are legal in Standard play. The rest can still be played in formats that accept them, and the table on this page names the regulation mark each print carries.

Can Xerneas XY31 be played in a tournament?

It is legal in Unlimited and Expanded play. Standard events run on a rotating list of sets, so check the current rotation before entering one.

Does this page say how good Xerneas XY31 is in a deck?

No. Every figure here is read from the printed card. Deck lists, tournament results and win rates are not published on this site, because the card files it reads do not contain them.
Back to summary

Where these card facts come from

Card facts are read once from openly published card files and do not change between readings — a printed card cannot gain HP. The places below are where the same information can be checked. Last updated: July 28, 2026 — the counts and rankings on this page were taken from the card files read on that day.

Primary official source

First-party official sources — the body that issues the data itself, such as a government agency, a statutory register or a rights holder publishing its own records.

1
The Pokémon Company International — official rules, tournament format and rotation announcements www.pokemon.com

Industry source

Second-party sources — marketplaces, trade associations, research institutes and companies that compile data about the market.

1
Pokémon TCG Data — openly published card files (card text, HP, attacks, weakness, retreat cost, illustrator credits) github.com
2
TCGdex card database — openly licensed card files (set membership and card numbering) github.com
Back to summary

Before you rely on these figures