Castform
Best Graded Castform Cards: Collector & Investor Guide
By Kyle Eggleston · Published May 13, 2026

Castform is a niche favorite with real collector appeal because it sits right at the heart of Pokémon's weather-themed mechanics and the experimental design of the EX era. While it has never been a marquee chase Pokémon like Charizard or Pikachu, Castform built a loyal following through memorable Ruby & Sapphire-era printings, Deoxys-era artwork, and later characterful appearances in modern sets. For graded collectors, Castform is the kind of Pokémon that rewards careful set knowledge. Its best cards span English EX-era releases, Diamond & Pearl-era secret rares, and a standout Black & White full art. PSA, BGS, and CGC slabs matter here because condition sensitivity, low submission volume, and scarce population data can make high-grade examples much harder to replace than raw copies suggest.
Why Castform Cards Are Worth Collecting
Castform cards appeal to a very specific kind of Pokémon TCG collector: people who appreciate set history, unusual mechanics, and artwork that captures the experimental side of the game. The Pokémon's connection to weather forms gave designers a lot to work with during the EX era, which is why some of its most interesting cards come from that period rather than from ultra-modern chase sets.
That niche status is actually part of the appeal. Castform collectors often end up building compact, highly curated runs rather than endless master sets, and graded examples can be surprisingly tough to source in top condition. For collectors who enjoy population scarcity, unusual holo patterns, and under-the-radar slab targets, Castform is a smart specialty lane.
What Makes a Graded Castform Card Valuable?
- Grade (PSA 10 commands highest premiums)
- Set and era (vintage vs modern sets)
- Rarity and print run
- Population report scarcity
- Recent sold comps on eBay
- Japanese vs English versions
- PSA 10 vs raw comparison
The Best Graded Castform Cards to Collect
1. Castform ex - EX Deoxys 97/107
Castform ex is the centerpiece of any serious Castform collection and easily the most iconic slab target for the species. As an EX-era ultra rare from EX Deoxys, it combines period-correct nostalgia, stronger demand from EX collectors, and the kind of surface and edge sensitivity that makes PSA 10 copies notably tougher than raw listings might imply.
English copies usually get most of the spotlight because EX Deoxys remains a highly collected set, but Japanese collectors also track the equivalent release closely. If you're buying one slab first, this is the card that best represents Castform's top-end collector market.
2. Castform - Great Encounters 95/106
The secret rare from Great Encounters is one of Castform's most visually distinct cards and a favorite among Diamond & Pearl-era collectors. Numbered outside the main set, it carries the extra appeal that many species collectors look for when they want something scarcer than a standard holo or regular rare.
Because this card comes from a mid-2000s set with dedicated set-builders, PSA 10 demand can be stronger than many casual collectors expect. Centering and foil quality are worth close inspection before buying.
3. Castform - Boundaries Crossed 146/149
Boundaries Crossed gave Castform its standout full art-style appearance, and this secret rare remains one of the best modern-era options for graded collectors. It has broad appeal because it crosses over between Castform species collectors and Black & White secret rare fans.
PSA 10 copies can command a meaningful premium over raw because silver-bordered Black & White secret rares often show wear more easily than binder photos reveal. For collectors who prefer display appeal, this is one of the easiest Castform cards to recommend.
4. Castform - EX Delta Species 35/113
EX Delta Species is a beloved set among collectors, and Castform's appearance here gives species collectors a card tied to one of the most creative eras in the hobby. While it is not the flashiest Castform on paper, its set context adds real long-term collectibility.
In high grade, this card benefits from crossover demand from Delta Species enthusiasts who enjoy even the non-holo and uncommon slots from the set. It is a smart pickup when building a broader EX-era Castform run.
5. Castform - Holon Phantoms 34/110
Holon Phantoms remains one of the most recognizable late EX-era expansions, and Castform's card from the set fits nicely into a weather-and-Holon themed niche. It is the kind of slab that advanced collectors appreciate because it is not obvious, but it belongs in a serious species portfolio.
PSA 10 examples can be harder to locate than raw supply suggests simply because fewer collectors bothered grading lower-rarity EX-era cards years ago. That submission gap can support stronger relative scarcity today.
6. Castform - EX Hidden Legends 31/101
EX Hidden Legends offers one of Castform's early English appearances and helps anchor the Pokémon in its most important collecting era. The card is affordable in lower grades, which makes it a practical entry point for collectors who want a graded EX-era example without jumping straight to Castform ex.
Top-grade copies still matter, though. Early 2000s print quality, edge wear, and off-centering can make gem mint examples more selective than many buyers assume.
7. Castform - EX Emerald 47/106
Castform from EX Emerald is a natural target for collectors focused on Hoenn-era Pokémon and weather-themed artwork. It may not carry the same headline status as the EX Deoxys ultra rare, but it is an important supporting card in a complete graded Castform lineup.
Collectors should compare English and Japanese availability when possible, since regional supply can shift pricing more than expected on niche species cards. Clean reverse holo copies can also attract attention from set-focused buyers.
8. Castform - EX Crystal Guardians 45/100
EX Crystal Guardians is a well-liked late EX-era set, and Castform's inclusion keeps it relevant for species collectors trying to cover the full stretch of ADV and PCG releases. This card often flies under the radar, which is exactly why patient graded buyers can sometimes find value.
The best approach here is to buy the card in the highest eye appeal you can afford rather than chasing a label alone. Print lines and whitening are common pitfalls on era-appropriate copies.
9. Castform Sunny Form - Legends Awakened 49/146
Legends Awakened expanded Castform's identity by giving one of its weather forms a dedicated card in the Diamond & Pearl era. That makes Sunny Form especially interesting for collectors who want more than just the base form represented in a species collection.
As a graded pickup, this card is more about completeness and form-specific appeal than headline value. It pairs well with the set's other Castform forms when building a themed slab display.
10. Castform Rainy Form - Legends Awakened 50/146
Castform Rainy Form is another strong companion piece from Legends Awakened and a fun target for form collectors. It is not usually the first Castform card buyers chase, but it becomes much more important once a collector starts assembling a complete graded weather-form lineup.
Because many surviving copies were binder-kept rather than slabbed, PSA 10 population can stay relatively thin. If you collect for visual variety, this and Sunny Form make the species much more interesting in a display case.
Vintage vs Modern Castform Cards
Castform's earliest and most important cards generally come from the EX era, where set nostalgia and lower surviving gem-mint volume give slabs more long-term collector weight. Modern and later-era cards like the Boundaries Crossed secret rare offer stronger visual punch and often broader appeal to newer buyers, but for pure species credibility, EX-era Castform cards still form the backbone of the market.
How to Track Castform Card Prices
Use eBay sold listings, PriceCharting, and PSA pop reports to gauge value. Slabfolio lets you look up graded card prices, upload your slab, and track your portfolio in one place.
FAQ
What is the rarest Castform card?
For most collectors, Castform ex from EX Deoxys is the key rarity and the most important English Castform card to own in high grade. The Great Encounters secret rare and Boundaries Crossed secret rare are also major chase pieces.
Is PSA 10 Castform worth buying?
Yes, if you collect niche species, EX-era cards, or low-pop slabs. Castform is not a mass-market character, but that often makes top-grade copies more condition-sensitive and harder to replace than raw prices alone suggest.
How do I find Castform card prices?
Check eBay sold listings for real transaction history, compare with PriceCharting where available, and review PSA population reports to understand grade scarcity. Slabfolio can help track individual slabs and monitor portfolio value over time.
Prices as of Oct 21, 2026
- 1
Castform ex PSA 10
EX Deoxys · 2005 · 97/107
Castform ex is the defining Castform chase card from the EX era and the species' most important English ultra rare. It is collected both by Castform specialists and by EX Deoxys set builders, giving it broader demand than most Castform cards.
Prioritize clean holo surfaces and strong centering, because EX-era ex cards can show flaws quickly in a slab.
- 2
Castform PSA 10
Great Encounters · 2008 · 95/106
This Great Encounters secret rare is one of Castform's most sought-after non-EX cards and a standout from the Diamond & Pearl era. Its out-of-set numbering gives it extra cachet with rarity-focused collectors.
Check for silvering, edge wear, and centering before paying a PSA 10 premium.
- 3
Castform PSA 10
Boundaries Crossed · 2012 · 146/149
Boundaries Crossed delivered one of the most visually memorable Castform cards, making it a favorite for display-oriented collectors. It also benefits from crossover interest from Black & White secret rare collectors.
Surface scratches and whitening on the back are common issues on this era's secret rares.
- 4
Castform PSA 10
EX Delta Species · 2005 · 35/113

Castform's EX Delta Species appearance ties the Pokémon to one of the hobby's most creative and beloved set concepts. Even as a lower-rarity card, it matters for serious species completists.
Buy the cleanest copy you can find, since fewer low-rarity EX-era cards were graded historically.
Estimated value: $2.39
- 5
Castform PSA 10
EX Holon Phantoms · 2006 · 34/110

Holon Phantoms remains a respected late EX-era set, and Castform's card here fits neatly into weather and Holon-themed collections. Its appeal comes from set prestige and relative grading scarcity rather than raw rarity.
Population can be thin in gem mint, so be patient and compare recent auction results carefully.
Estimated value: $2.98
- 6
Castform PSA 10
EX Hidden Legends · 2004 · 31/101

This early EX-series Castform is an important foundational card for the species in English. It is often one of the first graded EX-era copies collectors pick up when building a Castform run.
Do not overlook subtle edge whitening, which can keep otherwise sharp copies out of PSA 10 holders.
Estimated value: $3.81
- 7
Castform PSA 10
EX Emerald · 2005 · 47/106
EX Emerald gives Castform another core Hoenn-era appearance and helps round out the species' main ADV-era checklist. It is a quieter card, but one that serious set and species collectors consistently recognize.
Reverse holo versions can deserve separate attention if you want a more challenging sub-collection.
- 8
Castform PSA 10
EX Crystal Guardians · 2006 · 45/100

Castform from EX Crystal Guardians is a useful late-era ADV pickup and a natural addition to a complete graded species lineup. Its value comes more from completion and scarcity in top grade than from hype.
Eye appeal matters here, so choose a slab with a clean front even if multiple PSA 10s are available.
Estimated value: $0.43
- 9
Castform Sunny Form PSA 10
Legends Awakened · 2008 · 49/146

Legends Awakened gave dedicated spotlight to Castform's weather forms, and Sunny Form is one of the most recognizable of the trio. It is especially attractive to collectors who want a more visually varied Castform display.
Try to collect the weather forms together, since the trio displays better and can be easier to trade as a matched set.
Estimated value: $2.85
- 10
Castform Rainy Form PSA 10
Legends Awakened · 2008 · 50/146

Castform Rainy Form complements Sunny Form and broadens the species' collecting story beyond standard base-form cards. It is a strong graded target for form collectors and Diamond & Pearl-era specialists.
Matched centering and presentation across multiple form slabs can matter more than buying them one at a time.
Estimated value: $4.01
Frequently asked questions
What is the rarest Castform card?
For most collectors, Castform ex from EX Deoxys is the key rarity and the most important English Castform card to own in high grade. The Great Encounters secret rare and Boundaries Crossed secret rare are also major chase pieces.
Is PSA 10 Castform worth buying?
Yes, if you collect niche species, EX-era cards, or low-pop slabs. Castform is not a mass-market character, but that often makes top-grade copies more condition-sensitive and harder to replace than raw prices alone suggest.
How do I find Castform card prices?
Check eBay sold listings for real transaction history, compare with PriceCharting where available, and review PSA population reports to understand grade scarcity. Slabfolio can help track individual slabs and monitor portfolio value over time.
Whether you're building your first graded Castform collection or managing a larger Pokémon card portfolio, tracking real market movement matters. Slabfolio helps collectors organize slabs, monitor values, and follow graded card price changes over time.
Related guides

Best Graded Swalot Cards: Collector & Investor Guide
Swalot is not a headline Pokémon in the way Charizard or Pikachu is, but that is exactly why it attracts a certain kind of collector.

Best Graded Delcatty Cards: Collector & Investor Guide
Delcatty is a niche favorite in the Pokémon TCG, but it has real collector appeal thanks to its strong presence in the EX era and a handful of memorable competitive and artwork-driven releases.

Best Graded Grovyle Cards: Collector & Investor Guide
Grovyle has a smaller card catalog than headline stars like Charizard or Pikachu, but that is exactly why it appeals to focused collectors.

Best Graded Zigzagoon Cards: Collector & Investor Guide
Zigzagoon is a commons-and-completist favorite that quietly spans several important Pokémon TCG eras.

Best Graded Aron Cards: Collector & Investor Guide
Aron is a small Steel-type with a surprisingly deep collector niche.

Best Graded Cradily Cards: Collector & Investor Guide
Cradily is one of the most distinctive Fossil Pokémon in the TCG, pairing unusual artwork with a smaller, more specialized collector base than many headline species.