How do you evolve castform?

Castform doesn't evolve. It's a unique Pokémon that can change its form based on the weather.

Here are the different forms of Castform:

* Normal Form: The default form of Castform.

* Sunny Form: Appears when the weather is sunny.

* Rainy Form: Appears when the weather is rainy.

* Snowy Form: Appears when the weather is snowy.

To change Castform's form, simply enter a different weather condition. It will automatically transform!