
Water
- Abilities
- ForecastCastform transforms with the weather.
- Hidden ability
- —
- Capture
- Gender
- 50.0% female
- Egg groups
- Fairy / Amorphous
- Growth
- Medium Fast
- EV yield
- 1 HP
- Wild held item
- Mystic Water, Mystic Water
| HP | 70 | |
|---|---|---|
| Attack | 70 | |
| Defense | 70 | |
| Sp. Atk | 70 | |
| Sp. Def | 70 | |
| Speed | 70 | |
| Total | 420 |
Where to find it
Seen only in battle. Castform takes this form in battle in rain. It can't be kept in this form.
Evolution
Does not evolve.
Level-up moves
“On evolution” moves are learned when this Pokémon evolves. Open a move for its full effects and any special behavior in this hack.
| Level | Move | Type | Category | Power | Accuracy | PP | Effect and notes |
|---|---|---|---|---|---|---|---|
| 1 | Tackle | Normal | Physical | 40 | 100 | 35 | A physical attack in which the user charges and slams into the foe with its whole body. |
| 10 | Water Gun | Water | Special | 40 | 100 | 25 | Blasts the target with water. Does not burn the target. |
| 10 | Ember | Fire | Special | 40 | 100 | 25 | The foe is attacked with small flames. It has a 10% chance to burn the target. |
| 10 | Powder Snow | Ice | Special | 40 | 100 | 25 | The user attacks with a chilling gust of powdery snow. 10% chance to freeze the target. |
| 15 | Headbutt | Normal | Physical | 70 | 100 | 15 | The user sticks out its head and charges. It has a 30% chance to make the foe flinch. |
| 20 | Rain Dance | Water | Status | — | — | 5 | The user summons a heavy rain for 5 turns. Water-type moves become 1.5 times stronger. |
| 20 | Sunny Day | Fire | Status | — | — | 5 | The user intensifies the sun for 5 turns. Fire-type moves become 1.5 times stronger. |
| 20 | Hail | Ice | Status | — | — | 10 | The user summons a hailstorm lasting 5 turns. It damages all Pokémon except Ice types. |
| 25 | Weather Ball | Normal | Special | 50 | 100 | 10 | An attack move that varies in power and type depending on the weather. |
| 35 | Hydro Pump | Water | Special | 110 | 90 | 10 | Blasts the target with a huge volume of water. |
| 35 | Fire Blast | Fire | Special | 110 | 85 | 5 | The foe is hit by an intense blast of all-consuming fire. It has a 10% chance to burn the target. |
| 35 | Blizzard | Ice | Special | 110 | 70 | 5 | A howling blizzard is summoned to strike the foe. It has a 10% chance to freeze the target. |
| 45 | Hurricane | Special | 110 | 70 | 10 | The user wraps the foe in a fierce wind. It may confuse the foe. |
TMs and HMs
| TM / HM | Move | Type | Category | Power | Accuracy | PP | Effect and notes |
|---|---|---|---|---|---|---|---|
| TM03 | Water Pulse | Water | Special | 60 | 100 | 20 | The user attacks with a pulsing blast of water. It has a 20% chance to confuse the foe. |
| TM07 | Hail | Ice | Status | — | — | 10 | The user summons a hailstorm lasting 5 turns. It damages all Pokémon except Ice types. |
| TM10 | Hidden Power | Normal | Special | 60 | 100 | 15 | A unique attack that varies in type and intensity depending on the Pokémon using it. |
| TM11 | Sunny Day | Fire | Status | — | — | 5 | The user intensifies the sun for 5 turns. Fire-type moves become 1.5 times stronger. |
| TM13 | Ice Beam | Ice | Special | 90 | 100 | 10 | The foe is struck with an icy-cold beam of energy. It has a 10% chance to freeze the target. |
| TM14 | Blizzard | Ice | Special | 110 | 70 | 5 | A howling blizzard is summoned to strike the foe. It has a 10% chance to freeze the target. |
| TM17 | Protect | Normal | Status | — | — | 10 | It enables the user to evade all attacks for 1 turn. Its chance of failing rises if used in succession. |
| TM18 | Rain Dance | Water | Status | — | — | 5 | The user summons a heavy rain for 5 turns. Water-type moves become 1.5 times stronger. |
| TM21 | Frustration | Normal | Physical | var. | 100 | 20 | A full-power attack that grows more powerful the less the user likes its Trainer. |
| TM22 | Solar Beam | Grass | Special | 120 | 100 | 10 | The user gathers light on turn 1, then blasts a bundled beam on turn 2. |
| TM24 | Thunderbolt | Electric | Special | 90 | 100 | 15 | A strong electric blast is loosed at the foe. It has a 10% chance to paralyze the target. |
| TM25 | Thunder | Electric | Special | 110 | 70 | 10 | A wicked thunderbolt strikes the foe. It is more accurate in rain. 30% chance to paralyze the target. |
| TM27 | Return | Normal | Physical | var. | 100 | 20 | A full-power attack that grows more powerful the more the user likes its Trainer. |
| TM30 | Shadow Ball | Ghost | Special | 80 | 100 | 15 | The user hurls a shadowy blob at the foe. 20% chance to lower its Sp. Def by 1 stage. |
| TM32 | Double Team | Normal | Status | — | — | 15 | By moving rapidly, the user makes illusory copies of itself. Raises its evasiveness by 1 stage. |
| TM34 | Shock Wave | Electric | Special | 60 | — | 20 | The user strikes the foe with a quick jolt of electricity. This attack cannot be evaded. |
| TM35 | Flamethrower | Fire | Special | 90 | 100 | 15 | The foe is scorched with an intense blast of fire. It has a 10% chance to burn the target. |
| TM37 | Sandstorm | Rock | Status | — | — | 10 | A 5-turn sandstorm is summoned to hurt all Pokémon except Rock, Ground, and Steel types. |
| TM38 | Fire Blast | Fire | Special | 110 | 85 | 5 | The foe is hit by an intense blast of all-consuming fire. It has a 10% chance to burn the target. |
| TM42 | Facade | Normal | Physical | 70 | 100 | 20 | An attack whose power is 2 times higher if the user is poisoned, burned, or paralyzed. |
| TM44 | Rest | Psychic | Status | — | — | 5 | The user goes to sleep for 2 turns. It fully restores the user’s HP and heals any status problem. |
| TM45 | Attract | Normal | Status | — | 100 | 15 | The user charms a foe of the opposite gender. The foe has a 50% chance of being unable to act. |
| TM46 | Thief | Dark | Physical | 60 | 100 | 25 | The user attacks and steals the foe’s held item simultaneously. It can’t steal if the user holds an item. |
| TM53 | Energy Ball | Grass | Special | 90 | 100 | 10 | The user fires power drawn from nature. 10% chance to lower the target’s Sp. Def by 1 stage. |
| TM58 | Endure | Normal | Status | — | — | 10 | The user endures any attack with at least 1 HP. Its chance of failing rises if it is used in succession. |
| TM70 | Flash | Normal | Status | — | 100 | 20 | The user flashes a light that lowers the foe’s accuracy by 1 stage. It can also light up caves. |
| TM72 | Avalanche | Ice | Physical | 75 | 90 | 10 | Hurls hailstones at the target. Has a 30% chance to make the target flinch. |
| TM73 | Thunder Wave | Electric | Status | — | 90 | 20 | A weak electric charge is launched at the foe. It causes paralysis if it hits. |
| TM77 | Psych Up | Normal | Status | — | — | 10 | The user hypnotizes itself into copying any stat change made by the foe. |
| TM82 | Sleep Talk | Normal | Status | — | — | 10 | While it is asleep, the user randomly uses one of the moves it knows. |
| TM87 | Swagger | Normal | Status | — | 85 | 15 | The user enrages the foe into confusion. However, it also raises the foe’s Attack by 2 stages. |
| TM90 | Substitute | Normal | Status | — | — | 10 | The user makes a copy of itself using 1/4 of its HP. The copy serves as the user’s decoy. |
| TM101 | Scald | Water | Special | 80 | 100 | 15 | Scalds the target with boiling water. May burn the target. |
Move tutors
| Move | Type | Category | Power | Accuracy | PP | Effect and notes | Tutor location, cost and requirements |
|---|---|---|---|---|---|---|---|
| Hurricane | Special | 110 | 70 | 10 | The user wraps the foe in a fierce wind. It may confuse the foe. | Route 32 · Cost: Free Requirements: Route 32: the Hoppip blown away by the storm (→ Hurricane tutor) | |
| Icy Wind | Ice | Special | 55 | 95 | 15 | The user attacks with a gust of chilled air. Lowers the target’s Speed by 1 stage. | Route 20 · Cost: Aspear Berry ×1 Route 20 |
Egg moves
| Move | Type | Category | Power | Accuracy | PP | Effect and notes |
|---|---|---|---|---|---|---|
| Amnesia | Psychic | Status | — | — | 20 | The user empties its mind to forget its concerns. Raises its Sp. Def by 2 stages. |
| Clear Smog | Poison | Special | 50 | — | 15 | Throws a special lump of mud at the target, resetting its stat changes. |
| Cosmic Power | Psychic | Status | — | — | 20 | The user draws on a mystical power from space. Raises its Defense and Sp. Def by 1 stage. |
| Disable | Normal | Status | — | 100 | 20 | For several turns, this move prevents the foe from using the move it last used. |
| Future Sight | Psychic | Special | 120 | 100 | 10 | The foe is struck by a hunk of psychic energy 2 turns after this move is used. |
| Guard Swap | Psychic | Status | — | — | 10 | The user employs its psychic power to switch changes to its Defense and Sp. Def with the foe. |
| Hex | Ghost | Special | 65 | 100 | 10 | A relentless attack that deals heavy damage to a foe with a status problem. |
| Reflect Type | Normal | Status | — | — | 15 | The user reflects the foe’s type, becoming the same type. |
The official site of the Origin HeartGold English translation. Patches are published only on our GitHub releases.
A free, non-commercial fan project. Not affiliated with or endorsed by Nintendo, Creatures Inc., GAME FREAK inc. or The Pokémon Company.
© 2026 Origin HeartGold English translation team. Guide text: all rights reserved — see licence.