Drizzle() is a Pokémon ability introduced in the third generation.
Pokémon with Drizzle summon rain as they enter the battle. The effects are the same as Rain Dance though until the sixth generation, it lasted indefinitely. Now, it lasts 5 turns and can be extended to 8 turns with a Damp Rock. If there is another Pokémon with a weather ability, the slower one overrides the faster Pokémon's ability. If heavy rain, extremely harsh sunlight, or a mysterious air current is present, Drizzle will fail to activate.
Pokémon with Ability
As a Hidden Ability