Forecast in Pokémon Brilliant Diamond & Shining Pearl

Changes Castform’s form and type with the weather.

Castform becomes Fire-type Sunny Form in harsh sunlight, Water-type Rainy Form in rain, or Ice-type Snowy Form in hail. Other weather or weather suppression by Air Lock or Cloud Nine returns it to Normal Form. Losing or suppressing Forecast also returns it to Normal Form; regaining Forecast restores the eligible weather form. A Pokémon transformed into Castform retains the target’s form instead of changing with the weather.