Castform does not evolve; instead its ability, Forecast, reshapes it to fit the weather. Harsh sunlight turns it into the Fire-type Sunny Form, rain into the Water-type Rainy Form and hail into the Ice-type Snowy Form, and in any other conditions it stays in its Normal-type default. No other Pokémon can have Forecast, and Castform was the first Pokémon able to switch back and forth between forms. It is tiny: 0.3 meters tall and 0.8 kilograms.
Castform debuted in "Unfair Weather Friends" with a Trainer named Bart, and it cycled through every one of its forms before the episode ended. In Alola, an Ally Castform backed up a Totem Lurantis against Ash during the Lush Jungle trial in "Currying Favor and Flavor!," shifting into its Sunny Form before a Tackle from Rowlet finished it.
Castform's cards have followed its gimmick closely. Hidden Legends (2004) printed Rain Castform, Snow-cloud Castform, Sunny Castform and a plain Castform as four separate cards, all by Sumiyoshi Kizuki, and Delta Species (2005) did the same with art by Miki Tanaka. Legends Awakened (2008) repeated the full set of four with a different artist on each form, and Chilling Reign (2021) did it again as Commons.
Between those, Holon Phantoms (2006) printed Holon's Castform by Mitsuhiro Arita, and Lost Origin gave the plain form a Trainer Gallery card in 2022. Surging Sparks (2024) singled out the Sunny Form, printing it as a Common and as an Illustration Rare by Narano numbered above the set's 191 cards.
Part of the first four-form Castform run, illustrated by Sumiyoshi Kizuki.
The Normal form card that completes Hidden Legends' four-card Castform set.
From the second four-form Castform run, illustrated by Miki Tanaka.
A Holon-themed Castform illustrated by Mitsuhiro Arita.
An Illustration Rare of the Sunny Form, illustrated by Narano.
Castform first appeared in Hidden Legends (2004), which printed its Rain, Snow-cloud, Sunny and plain forms as four separate cards illustrated by Sumiyoshi Kizuki.
No. Castform does not evolve; it changes between its Normal, Sunny, Rainy and Snowy forms with its ability Forecast instead.
Hidden Legends (2004), Delta Species (2005), Legends Awakened (2008) and Chilling Reign (2021) each printed all four forms as separate cards.
| # | Card | Set | Year | Rarity | Price | 30D | |
|---|---|---|---|---|---|---|---|
| 1 | Snow-cloud Castform | Hidden Legends | 2004 | Rare | — | $10.25guide | -0.5% |
| 2 | Castform Sunny Form | Surging Sparks | 2024 | Illustration rare | Holo | $6.97guide | -8.7% |
| 3 | Rain Castform | Hidden Legends | 2004 | Rare | — | $6.54guide | +5.5% |
| 4 | Sunny Castform | Delta Species | 2005 | Rare | — | $5.82guide | +5.1% |
| 5 | Sunny Castform | Hidden Legends | 2004 | Rare | — | $5.71guide | +1.4% |
| 6 | Rain Castform | Delta Species | 2005 | Rare | — | $5.49guide | +4.8% |
| 7 | Snow-cloud Castform | Delta Species | 2005 | Rare | — | $5.42guide | +8.6% |
| 8 | Holon's Castform | Holon Phantoms | 2006 | Uncommon | — | $5.03guide | +0.8% |
| 9 | Castform Snow-cloud Form | Legends Awakened | 2008 | Uncommon | — | $3.87guide | +3.2% |
| 10 | Castform | Hidden Legends | 2004 | Uncommon | — | $3.29guide | +3.8% |
Ranked by each card’s main print in near-mint raw condition. 1st Edition, Shadowless and other versions are priced on each card’s page. The table updates live.
The most valuable Castform card is Snow-cloud Castform from Hidden Legends, released in 2004. All 23 Castform cards carry a market value, and they span the years 2004 to 2025. The ten leading cards hold 80 percent of the total value, so the top of the ranking carries most of the weight in Castform card value, with Hidden Legends and Delta Species prints filling much of it.
Snow-cloud Castform from Hidden Legends (2004) leads the most valuable Castform cards, ahead of the next card by 1.4 times. It is a Rare from the EX era. Second is Castform Sunny Form from Surging Sparks (2024), an Illustration rare, a full-art style of card where the artwork extends across the card. Third is Rain Castform from Hidden Legends (2004), another Rare, followed by Sunny Castform from Delta Species (2005), also a Rare.
The EX era supplies nine of the twenty-five leading Castform cards, with Sword & Shield next at six, Diamond & Pearl at four, Scarlet & Violet at two, and Sun & Moon and Mega Evolution at one each. The newest era's leader is Mega Absol ex from Mega Evolution (2025), sitting 16th overall. All ten of the top ten and all twenty-three of the cards counted among the top twenty-five are modern, where modern means every era after the WOTC era.
Among the ten most valuable Castform cards, six are printed Rare, three are Uncommon and one is an Illustration rare. Widening to the leading twenty-five, the mix is seven Common, seven Uncommon, six Rare, and one each of Double rare, Holo Rare and Illustration rare. Castform cards in this ranking are therefore mostly standard rarities rather than the chase rarities found for many other species.
Castform ranks 717th of 1020 species with priced cards by the value of its single leading card, and 413th of 753 by the combined value of its ten leaders. The single top card sits well down the field, while the ten-card total lands closer to the middle. The Castform card market is built on a spread of older EX-era prints from Hidden Legends and Delta Species rather than one standout card.
Written from market data as of October 29, 2026; the table updates live.

ポワルン
Normal
Castform is the Normal type Weather Pokémon that switches between Normal, Sunny, Rainy and Snowy forms with its ability, Forecast. On cards it has been printed in all four forms across four different sets, from Hidden Legends in 2004 to Chilling Reign in 2021.
Castform Sunny FormSurging Sparks · 195$6.97+5.3%47Quant score47 / 100
Mega Absol exMega Evolution · 086 · Holo$0.700.0%88Quant score88 / 100
CastformLost Origin Trainer Gallery · TG11$1.88-22.3%50Quant score50 / 100
Snow-cloud CastformHidden Legends · 25 · Normal$10.250.0%44Quant score44 / 100
CastformChilling Reign · 121 · Normal$0.230.0%45Quant score45 / 100
Castform Sunny FormChilling Reign · 22 · Normal$0.29-3.3%89Quant score89 / 100
Rain CastformHidden Legends · 23 · Normal$6.540.0%69Quant score69 / 100
Holon's CastformHolon Phantoms · 44 · Normal$5.030.0%61Quant score61 / 100
CastformHidden Legends · 30 · Normal$3.290.0%71Quant score71 / 100
Castform Rainy FormChilling Reign · 33 · Normal$0.16+6.7%44Quant score44 / 100
CastformBrilliant Stars · 116 · Normal$0.160.0%88Quant score88 / 100
Castform Snowy FormChilling Reign · 34 · Normal$0.19+5.6%82Quant score82 / 100
Castform Sunny FormSurging Sparks · 020 · Normal$0.120.0%79Quant score79 / 100
CastformGuardians Rising · 105 · Normal$0.210.0%63Quant score63 / 100