Pokepedia
Generation III Ability

Effect Spore

Effect, usage, and Pokémon with this ability.

Effect Spore is a Pokémon ability introduced in Generation III. Has a 30% chance of inflcting either paralysis, poison, or sleep on attacking Pokémon on contact.

Full effect

Whenever a move makes contact with this Pokémon, the move's user has a 30% chance of being paralyzed, poisoned, or put to sleep, chosen at random. Nothing is done to compensate if the move's user is immune to one of these ailments; there is simply a lower chance that the move's user will be affected.

Contact with the Pokémon may inflict poison, sleep, or paralysis on the attacker.

Pokémon with Effect Spore

11 Pokémon