Certain battle rules restrict the use of Pokémon with Drizzle.
- Drizzle Clause: Pokémon are not allowed to have the Drizzle Ability.
- Drizzle-Swim Clause: A team cannot have a Pokémon with the Drizzle Ability and another Pokémon with the Swift Swim Ability.
- Weather Ability Clause: A team cannot have a weather-setting Ability and an Ability that boosts Speed when that weather is active. This includes the combinations of Drizzle and Swift Swim, Drought and Chlorophyll, and Sand Stream and Sand Rush.
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