Stats & Training
Castform's stats barely vary. None sit in respectable range with no real gaps. It's a blank slate for EV investment. Worth 1 HP EV, medium-fast 1M XP curve to max.
This Pokémon can change its cells, taking different forms based on the temperature and humidity.
This Pokémon can change its cells, taking different forms based on the temperature and humidity.
Castform Weakness
Castform's Normal typing leaves it vulnerable to Fighting. It shrugs off Ghost-type attacks completely. Only 1 weakness makes it relatively easy to build around defensively.
| Damage | Types |
|---|---|
| 2x (Weak) | Fighting |
| 0x (Immune) | Ghost |
- Fairy type does not exist — Dragon has fewer checks
- Physical / Special split now per-move (introduced Gen IV)
In HeartGold & SoulSilver, Heracross can KO Castform with Close Combat (148-174%).
 Heracross BugFighting | B | |
Recommended Build AbilityGuts ItemChoice Scarf NatureJolly Moves
Damage vs Castform View Heracross builds →Close Combat 2x148-174%KO Megahorn74-87% Stone Edge41-49% | ||
HeartGold & SoulSilver Evolution
No evolution chain to worry about here. Castform is a standalone Pokemon with a decent partner pool for breeding through two egg groups. Eggs come out average hatch time. View every chain in the Evolution Chart.
How to Evolve
Breeding
Breed Castform easily with 31 breeding partners from the Indeterminate and Fairy egg groups. Pass egg moves like Amnesia, Disable, Future Sight and 3 more to offspring.
HeartGold & SoulSilver Castform Best Moveset
Forecast isn't flashy, but it matters. Combined with Life Orb for extra damage on every hit for a health trade and max HP and Sp. Atk EVs, Castform fills the special attacker slot reliably. Quiet nature finishes the spread.
Best Build
Castform best EVs are HP and Sp. Atk
Special Tank Moveset
- Weather Ball
- Flamethrower
- Hidden Power Psychic
- Substitute
Recommended Teammates
Moves
The natural movepool does the job, but Amnesia and Disable from the egg pool give Castform something extra. Pair those with Last Resort and Double-Edge for STAB and coverage across 8 types for reach, and the kit fills out nicely.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
Transfer Moves
How to Get Castform in HeartGold & SoulSilver
Castform doesn't appear in HeartGold & SoulSilver. Transfer it from Ruby, Emerald, or Sun to add it to your collection. Check the source games below for encounter details.
Castform is not available as a wild encounter in this game.
Catch in the wild in:
Then trade to HeartGold & SoulSilver.
Also found in:
Castform Guide
In HeartGold & SoulSilver, watch for Machamp (Fighting) when using Castform. They all hit it super-effectively with STAB. Only 1 weakness means fewer dedicated counters to worry about.
For HeartGold & SoulSilver, it depends on your team. Castform at 420 BST isn't a powerhouse, but the Normal coverage might be exactly what you're missing.
In HeartGold & SoulSilver, Castform has a 420 base stat total and ranks as D-Tier: outclassed by other options available in HeartGold & SoulSilver. It works best as a balanced. Weatherball with Life Orb is the standard set.
Forecast changes Castform's type and form to match the weather. That's the one you want on Castform. It's the only ability Castform has.
In HeartGold & SoulSilver, Normal typing gives Castform 1 resistances plus Ghost immunity. HP at base 70 is the top stat. 420 BST gives it a workable foundation.
Game Availability
Castform first appeared in Ruby & Sapphire and has been available in 13 games across 8 generations. Obtainable through wild encounters in most titles where it appears.
Click a game to view version-specific details
- Gen 1Y
Yellow - Gen 1RB
Red & Blue - Gen 2GS
Gold & Silver - Gen 2C
Crystal - Gen 3RSDebut
Ruby & Sapphire - Gen 3FRLG
FireRed & LeafGreen - Gen 3E
Emerald - Gen 4Pt
Platinum - Gen 4HGSS
HeartGold & SoulSilver - Gen 4DP
Diamond & Pearl - Gen 5BW
Black & White - Gen 5B2W2
Black 2 & White 2 - Gen 6XY
X & Y - Gen 6ORAS
Omega Ruby & Alpha Sapphire - Gen 7USUM
Ultra Sun & Ultra Moon - Gen 7SM
Sun & Moon - Gen 7LGPE
Let's Go Pikachu & Eevee - Gen 8SwSh
Sword & Shield - Gen 8PLA
Legends: Arceus - Gen 8BDSP
Brilliant Diamond & Shining Pearl - Gen 9SV
Scarlet & Violet - Gen 9LZA
Legends: Z-A - Gen 10WW
Winds & Waves