Drizzle
Effect:
The weather changes to rain when this Pokémon enters battle for 5 turns (8 when holding Damp Rock item).
If multiple Pokémon with this ability, drought, sand stream, or snow warning are sent out at the same time, the abilities will activate in order of Speed. Each ability's weather will cancel the previous weather, and only the weather summoned by the slowest of the Pokémon will stay.