Hoopa-GX 166 — what does this card actually do?

Name: Hoopa-GX 166
Brand: Pokémon
Author: 5ban Graphics

This card has 190 HP, a top attack printed at 160 damage and a Fighting weakness.

Darkness · Basic GX · Team Up · measured against 20,444 cards on file — card data read July 28, 2026

What does Hoopa-GX 166 do in a game?

Hoopa-GX 166 is a Darkness Pokémon card with 190 HP, printed as Basic GX.

Its strongest attack, Dark Strike, is printed at 160 damage for 3 Energy — 53 damage per Energy card.

Because of the Fighting weakness, any Fighting attack printed at 95 damage or more removes it in a single turn.

Darkness Basic GX Rare Ultra Unlimited and Expanded#720 Hoopa-GX

Hoopa-GX 166Team Up

190 HP · Darkness · Basic GX · retreat 3 · Fighting weakness ×2

Top printed damage16053 per Energy Dark Strike160 damage for 3 Energy
as of July 28, 2026

Hit points190 HP6.6% of 17,290 in the 190~230 band

Printed damage1609.0% of 16,246 in the 130~180 band

Retreat cost3 Energy12.6% of 17,240 in the 3 band

Energy efficiencyAbove typicalAboveTypicalBelowThis card 53 · typical 49.0
damage per Energy card, among cards whose cheapest attack costs 1

Price trackRare UltraTeam Upranked among GX cardsWhat it costs today, how it moved, and where to buy it

Card classBasic GX

RarityRare Ultra

SetTeam Up

Card number166

Card data readJuly 28, 2026

What it sells for now$14.27Opens the price page — daily prices, every print variant, where to buy · read August 14, 2026 Removed in one hit by95 damage190 HP against a Fighting ×2 weakness Turns of setup3 turnsEnergy attaches once a turn, so the top attack waits that long Cards that can do it492 cardsCounted across the whole card archive Cards in the same line20 moreEvery print carrying Pokédex #720 Where it can be playedUnlimited and ExpandedRead from the official format list

How Hoopa-GX 166 is built, on five measures

Strongest on Attack cost lightness — top 1.8% of the archive. Weakest on Retreat lightness — bottom 16.8%.

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 Hoopa-GX 166 is built, on five measures
Measure	Percentile	Printed value
Hit points	87.2%	190 HP
Top printed damage	91.7%	160 damage
Energy efficiency	91.0%	53 per Energy
Retreat lightness	16.8%	3 Energy
Attack cost lightness	98.2%	1 Energy

What it can do

Attack record

1ERogue Ringhas printed text—
3EDark Strike53 damage per Energy card · has printed text160damage
3EDevilish Hands-GXhas printed text—

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

Where it stands

No. 2,047of 17,290 cards ranked by printed HP

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Among the 17,290 cards in every card in the archive that carry printed HP, this one is number 2,047 at 190 HP.

Darkness cardsNo. 219of 1,248 by printed HP GX cardsNo. 382of 601 by printed HP

This cardHoopa-GX 166Team Up190 HP

Printed HP

The ceiling of this archive is 380 HP — 190 HP above this card.

Highest printed HPMega Emboar ex 273Ascended Heroes380 HP

What stands out on Hoopa-GX 166

Hit points 190 HP puts it in the 190~230 band, where 6.6% of 17,290 cards with printed HP sit.
Energy It returns 53 damage per Energy card against 49.0 for cards whose cheapest attack costs 1.
Weakness A Fighting attack printed at 95 damage or more removes it in a single turn.

Hoopa-GX 166 at a glance

What it is. A Darkness Pokémon card with 190 HP printed as Basic GX, printed in Team Up.
What it can do. 3 attacks printed on the card, the strongest at 160 damage for 3 Energy.
What it fears. A Fighting weakness at ×2, which means 95 printed damage is enough to remove it.
What it costs to move. 3 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 Hoopa-GX 166 cost, and what do they hit for?

The card prints 3 attacks. The strongest asks for 3 Energy and returns 160 damage, which is 53 damage for every Energy card attached.

Hoopa-GX 166 — every printed attack, its cost and its damage
Attack	Energy cost	Cards of Energy	Printed damage	Damage per Energy	Effect
Rogue Ring	1 Darkness	1	—	—	Search your deck for up to 2 cards and put them into your hand. Then, shuffle your deck.
Dark Strike	3 Darkness	3	160	53	This Pokémon can't use Dark Strike during your next turn.
Devilish Hands-GX	3 Darkness	3	—	—	Choose 1 of your opponent's Pokémon-GX or Pokémon-EX 6 times. (You can choose the same Pokémon more than once.) For each time you chose a Pokémon, do 30 damage to it. This damage isn't affected by Weakness or Resistance. (You can't use more than 1 GX attack in a game.)

Retreating costs a further 3 Energy, discarded from this card, and that cost is paid on top of anything in the table.

Rogue Ring1 Energy card

Dark Strike3 Energy cards

Devilish Hands-GX3 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.

Dark Strike 3 Energy160 damage for 3 Energy — 53 per Energy card160

Bars are printed damage against this card's own highest attack (160).

Back to summary

How does Hoopa-GX 166 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.

Hoopa-GX 166 — Team Up — Hoopa-GXTeam Up 166

No.2,047by HP in the archive

Hoopa-GX 166 prints 190 HP, which puts it at number 2,047 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).

92% on printed damage — it out-hits that share of the 16,246 cards that print damage

Top 12%Where it sits on printed HP

This card190 HP
Middle half of the archive60–130 HP
Strongest GX card300 HP

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

This card prints 190 HP, which is 50% 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

130~18015.5%2,679 cards

190~230 — this card6.6%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 190 HP.

Cards in the 190~230 band typically print 132 damage and ask 2 Energy to retreat.

Hit points — where this card sits
Group	Share	Value
~70	38.6%	6,669 cards
80~120	33.1%	5,725 cards
130~180	15.5%	2,679 cards
190~230 — this card	6.6%	1,148 cards
240~280	3.3%	567 cards
290~330	2.4%	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

70~12021.8%3,535 cards

130~180 — this card9.0%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 160.

Cards in the 130~180 band typically have 198 HP and ask 2 Energy to retreat.

Top printed damage — where this card sits
Group	Share	Value
~30	42.7%	6,938 cards
40~60	22.0%	3,566 cards
70~120	21.8%	3,535 cards
130~180 — this card	9.0%	1,461 cards
190~250	3.8%	621 cards
260+	0.8%	125 cards

Cheapest attack cost — where this card sits

01.8%304 cards

1 — this card54.4%9,392 cards

226.4%4,565 cards

314.7%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 1 Energy.

Cards whose cheapest attack costs 1 typically have 93 HP and print 49 damage.

Cheapest attack cost — where this card sits
Group	Share	Value
0	1.8%	304 cards
1 — this card	54.4%	9,392 cards
2	26.4%	4,565 cards
3	14.7%	2,533 cards
4	2.4%	421 cards
5	0.3%	47 cards

Retreat cost — where this card sits

05.3%914 cards

149.3%8,503 cards

228.6%4,926 cards

3 — this card12.6%2,168 cards

44.2%729 cards

17,240 cards carry a retreat cost. This one costs 3 Energy to retreat.

Cards with a retreat cost of 3 typically have 150 HP and print 99 damage.

Retreat cost — where this card sits
Group	Share	Value
0	5.3%	914 cards
1	49.3%	8,503 cards
2	28.6%	4,926 cards
3 — this card	12.6%	2,168 cards
4	4.2%	729 cards

No. 2,047of 17,290

That is where Hoopa-GX 166 stands highest on HP — number 2,047 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.

Every card in the archive — 20,444 cards No. 2,047 of 17,290 by HP · No. 1,069 of 16,246 by damage · top by HP: Mega Emboar ex, 380

top 7% on damage
Darkness cards — 1,249 cards No. 219 of 1,248 by HP · No. 98 of 1,170 by damage · top by HP: Mega Gengar ex, 350

top 8% on damage
GX cards — 601 cards No. 382 of 601 by HP · No. 175 of 594 by damage · top by HP: Moltres & Zapdos & Articuno-GX, 300

top 29% on damage
Team Up — 198 cards No. 28 of 156 by HP · No. 20 of 146 by damage · top by HP: Magikarp & Wailord-GX, 300

top 13% 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 190 HP~~middle half 60–130 HP~~
this card 190
Top printed damage 160 damage~~middle half 20–90 damage~~
this card 160

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 printed as GX

601 on record

Cards in the same HP band

1,148 of 17,290 (6.6%)

Cards with this much printed damage

1,461 of 16,246 (9.0%)

Counted from the card files this site reads, one card at a time.

Open the group this card falls into

Back to summary

Is Hoopa-GX 166 efficient for the Energy it asks for?

Printed damage on its own says nothing — a 160 damage attack that needs 3 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

Hoopa-GX 166 — this card53.0160 damage for 3 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 1 typically return 49.0 damage per Energy card. This card returns 53.

Damage per Energy card, across the whole archive
Group	Share	Value
1 Energy	49.0	49 damage typical
2 Energy	32.5	65 damage typical
3 Energy	34.7	104 damage typical
4 Energy	27.8	111 damage typical
5 Energy	41.8	209 damage typical
Hoopa-GX 166 — this card	53.0	160 damage for 3 Energy

2501250 damage

012345 Energy

Typical for that Energy cost 6 groupsDark Strike 160 / 3

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 Hoopa-GX 166.
Group	Typical printed damage	Damage per Energy card	Cards in this group
Cheapest attack costs 0 Energy	45	—	304
Cheapest attack costs 1 Energy	49	49	9,392
Cheapest attack costs 2 Energy	65	33	4,565
Cheapest attack costs 3 Energy	104	35	2,533
Cheapest attack costs 4 Energy	111	28	421
Cheapest attack costs 5 Energy	209	42	47
Dark Strike	—	53	—

This card, per Energy card

53 damage

Typical for a 1 Energy attack

49.0 damage

Difference

+4.0 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 160 is read as high or low rather than merely large.

Back to summary

Is Hoopa-GX 166 strong for a GX card?

GX cards are built large to begin with, so measuring this one against the whole archive mixes up what the mechanic gives it with what the card itself gives it. Measured inside its own group, the two come apart.

Hit points190 HPtypical for the group is 214 HP — this card is 11% below

Top printed damage160 damagetypical for the group is 133 damage — this card is 20% above

Retreat cost3 Energytypical for the group is 2 Energy — this card is 50% above

The group is every GX card in the archive — 601 of them. Each figure is compared with what that group typically prints, not with the archive as a whole.

Back to summary

What does being a Darkness card do for Hoopa-GX 166?

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 1,884 Fighting cards carry that type A Fighting attack printed at 95 damage is enough to remove this card in one turn.

Hoopa-GX 166 · Basic GX 190 HP Its hardest attack is printed at 160 damage.

Takes double from this card — no group most often prints a Darkness weakness This type gains nothing automatic from the weakness rule.

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

Darkness — this cardmost often weak to Fighting7.2%1,249 cards

Dragonmost often weak to Fairy3.1%530 cards

Fairymost 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
Group	Share	Value
Psychic	13.5%	2,335 cards
Water	14.1%	2,435 cards
Colorless	12.6%	2,173 cards
Fire	9.1%	1,574 cards
Fighting	10.9%	1,884 cards
Lightning	8.8%	1,520 cards
Grass	13.8%	2,387 cards
Metal	5.4%	925 cards
Darkness — this card	7.2%	1,249 cards
Dragon	3.1%	530 cards
Fairy	1.4%	237 cards

Darknessweak to Fighting

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

What being a Darkness card is worth

No group in the archive most often prints a Darkness weakness, so this type gains nothing automatic from the weakness rule. Going the other way, Darkness cards are themselves most exposed to Fighting.

Every energy type in the archive

Back to summary

What knocks out Hoopa-GX 166 in one hit, and what does it knock out?

Weakness doubles the damage a Fighting attack deals to this card, so the bar it has to clear is 95 printed damage rather than 190.

Cards that remove it in one attack

492

Cards it removes in one attack

934

Fighting damage needed to knock it out

Counted across the whole card archive. 190 HP against a Fighting weakness at ×2 decides all three figures.

Removes it in one attackSandslashMega Evolution 69100 damage

×2Fighting weakness · 95 printed damage is enough
100 damage becomes 200 against this card

This cardHoopa-GX 166Team Up 166190 HP

Why this card was picked to stand opposite

Of the 490 cards in the archive that can remove Hoopa-GX 166 in a single attack, this one clears the bar by the smallest margin — 100 printed damage against a bar of 95. 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.

Hoopa-GXweak to Fighting ×2

Hoopa-GXresists Psychic -20

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

What the Psychic resistance changes

Damage from Psychic 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.

Fighting cards that remove Hoopa-GX in one attack
Card	Set	HP	Printed damage	After weakness
Mega Lucario ex (77)	Mega Evolution	340	270	540
Mega Lucario ex (160)	Mega Evolution	340	270	540
Mega Lucario ex (179)	Mega Evolution	340	270	540
Mega Lucario ex (188)	Mega Evolution	340	270	540
Mega Lucario ex (113)	Ascended Heroes	340	270	540
Toxtricity ex (100)	Paradox Rift	260	270	540

190 HP against a Fighting ×2 weakness means any Fighting attack printed at 95 damage or more is enough. 492 cards in the archive clear that bar.

Shadow Rider Calyrex VMAX TG18 — Astral Radiance Trainer Gallery

320 HP Shadow Rider Calyrex VMAX [TG18]

Shadow Rider Calyrex VMAX TG30 — Astral Radiance Trainer Gallery

320 HP Shadow Rider Calyrex VMAX [TG30]

320 HP Hatterene VMAX [66]

Hatterene VMAX GG47 — Crown Zenith Galarian Gallery

320 HP Hatterene VMAX [GG47]

320 HP Dragapult VMAX [93]

320 HP Dragapult VMAX [197]

Cards this one removes in a single attack

934 cards in the archive are weak to Darkness 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 can you use instead of Hoopa-GX 166?

Every card below asks a deck for the same kind of slot, so the comparison is between what they print, not what they cost.

Cards that fill the same slot as Hoopa-GX 166
Card	Set	HP	Top damage	Retreat
Umbreon-GX	Hidden Fates Shiny Vault	200	90	2
Umbreon-GX	Sun & Moon	200	90	2
Darkrai-GX	Hidden Fates Shiny Vault	180	130	2
Yveltal-GX	Forbidden Light	180	100	2
Umbreon-GX	Sun & Moon	200	90	2
Darkrai-GX	Burning Shadows	180	130	2

This card itself is 190 HP, 160 top damage and 3 retreat, and every card here is Darkness like 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 Hoopa-GX 166 in Team Up?

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.

300 Magikarp & Wailord-GX [160]

300 Magikarp & Wailord-GX [161]

240 Pikachu & Zekrom-GX [162]

240 Ampharos-GX [163]

240 Gengar & Mimikyu-GX [164]

240 Gengar & Mimikyu-GX [165]

250 Incineroar-GX [167]

170 Cobalion-GX [168]

250 Latias & Latios-GX [169]

250 Latias & Latios-GX [170]

270 Eevee & Snorlax-GX [171]

Brock's Grit [172]

Cards printed either side of this one

These are the cards numbered either side of #166 in Team Up. 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 Hoopa-GX 166, 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.

The rule printed on this card

“Pokémon-GX rule: When your Pokémon-GX is Knocked Out, your opponent takes 2 Prize cards.”

Prize cards your opponent takes when it is knocked out

Every knockout carries the opponent 2 steps closer to winning, and that is the cost of putting this card on the field whatever it cost to buy.

Rulebook clauses that apply to Hoopa-GX 166
Clause	What the rulebook says	Cards it applies to	Share of the archive
Weakness	Some Pokemon have Weakness or Resistance to Pokemon of certain types, marked in the lower-left corner of the card.	16,744 cards	81.9%
Retreat	Retreat your Active Pokemon (only once per turn).	17,244 cards	84.3%
Energy per turn	You can attach Energy just once each turn!	17,180 cards	84.0%

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.

Hoopa-GX 166 — tournament formats
Format	Status	What that means
Standard	Not listed	This card is not listed for this format
Expanded	Legal	Can be played in this format
Unlimited	Legal	Can 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 February 1, 2019.

Back to summary

Hoopa-GX 166 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, Dark Strike, needs 3 Energy attached. Energy attaches once a turn, so that attack waits 3 turns from an empty card.
That works out at 53 damage for every Energy card attached.
Moving it out of the active spot costs 3 more Energy, discarded from the card itself.

Where its HP stands, cut four ways

Every card in the archiveNo. 2,047 of 17,290

Darkness cardsNo. 219 of 1,248

GX cardsNo. 382 of 601

Team UpNo. 28 of 156

What actually removes it

A Fighting attack printed at 95 damage removes it in a single turn — that is the bar, not its 190 HP.
492 cards in the archive clear that bar.
Going the other way, it removes 934 cards in one attack.
Damage from Psychic attacks is reduced before it is applied, so an attack that clears the bar on paper may still fall short.

Back to summary

Hoopa-GX 166 card record

Hoopa-GX 166 — the printed record, field by field
Hit points	190 HP	Type	Darkness
Weakness	Fighting ×2	Retreat cost	3 Energy
Card type	Basic GX	Pokédex number	#720
Set	Team Up	Card number	166 of 181
Series	Sun & Moon	Released	February 1, 2019
Rarity	Rare Ultra	Illustrator	5ban Graphics
Tournament legality	Unlimited and Expanded only
Printed rule	Pokémon-GX rule: When your Pokémon-GX is Knocked Out, your opponent takes 2 Prize cards.

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

Back to summary

What does Hoopa-GX 166 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

$14.27

Read on

August 14, 2026

One figure only — the price record, the daily chart and the marketplaces live on the price page.

Hoopa-GX 166 priceOne year of daily prices, every print variant, and where to buy it.Open the price page

Back to summary

Hoopa-GX 166 — frequently asked questions

How much damage does it take to knock out Hoopa-GX 166?

Hoopa-GX 166 has 190 HP and a Fighting weakness at ×2, so a Fighting attack printed at 95 damage or more removes it in one turn. Any other type has to print the full 190.

What is the strongest attack on Hoopa-GX 166?

Dark Strike, printed at 160 damage for 3 Energy — 53 damage per Energy card. This Pokémon can't use Dark Strike during your next turn.

What is the retreat cost of Hoopa-GX 166?

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

Can Hoopa-GX 166 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.

What does the rule on Hoopa-GX 166 mean?

The card reads “Pokémon-GX rule: When your Pokémon-GX is Knocked Out, your opponent takes 2 Prize cards.” That sentence is printed on the card itself, so it applies wherever the card is played.

Does this page say how good Hoopa-GX 166 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.

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.

Pokémon TCG Data — openly published card files (card text, HP, attacks, weakness, retreat cost, illustrator credits) github.com

TCGdex card database — openly licensed card files (set membership and card numbering) github.com

Back to summary

Hoopa-GX 166 — what does this card actually do?

What does Hoopa-GX 166 do in a game?

Hoopa-GX 166 performance summary

What it can do

Where it stands

Hoopa-GX 166 at a glance

What do the attacks on Hoopa-GX 166 cost, and what do they hit for?

How does Hoopa-GX 166 compare with every other card?

Is Hoopa-GX 166 efficient for the Energy it asks for?

Is Hoopa-GX 166 strong for a GX card?

What does being a Darkness card do for Hoopa-GX 166?

What knocks out Hoopa-GX 166 in one hit, and what does it knock out?

What can you use instead of Hoopa-GX 166?

Which other cards share the Pokémon behind Hoopa-GX 166?

What was printed next to Hoopa-GX 166 in Team Up?

Which rules apply to Hoopa-GX 166, and where can it be played?

Hoopa-GX 166 in depth — what these figures add up to

What it asks a deck for

Where its HP stands, cut four ways

What actually removes it

Hoopa-GX 166 card record

What does Hoopa-GX 166 cost?

Hoopa-GX 166 — frequently asked questions

How much damage does it take to knock out Hoopa-GX 166?

What is the strongest attack on Hoopa-GX 166?

What is the retreat cost of Hoopa-GX 166?

Can Hoopa-GX 166 be played in a tournament?

What does the rule on Hoopa-GX 166 mean?

Does this page say how good Hoopa-GX 166 is in a deck?

Where these card facts come from

Before you rely on these figures

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