Ability · Gen 3 · 11 Pokémon
Effect Spore
30% chance of poison/paralysis/sleep on others making contact with this Pokemon.
30% chance a Pokemon making contact with this Pokemon will be poisoned, paralyzed, or fall asleep.
Effect Spore was introduced in Generation 3. 11 Pokémon and forms can have it (3 as a hidden ability).
Best Pokémon with Effect Spore
Ranked by usage in public Pokémon Showdown battles (Champions VGC first, then National Dex OU, SV OU and Champions Singles), with how many of each Pokémon's sets actually run Effect Spore.
Pokémon with Effect Spore
As a regular ability (8)
Paras
Parasect
Shroomish
Foongus
Morelull
ShiinoticAs a hidden ability (3)
Gossifleur
EldegossEffect Spore FAQ
What does Effect Spore do?
30% chance a Pokemon making contact with this Pokemon will be poisoned, paralyzed, or fall asleep.
Which Pokémon have Effect Spore?
11 Pokémon and forms can have Effect Spore, 3 of them only as a hidden ability: Vileplume, Paras, Parasect, Shroomish, Breloom, Foongus, Amoonguss and Morelull and more.
Is Effect Spore a hidden ability?
It depends on the Pokémon. Vileplume, Gossifleur and Eldegoss have it as a hidden ability, while Paras, Parasect, Shroomish, Breloom and Foongus can have it as a regular ability.
What are the best Pokémon with Effect Spore?
By competitive usage, the most used Pokémon that can have Effect Spore are Vileplume (#136 in Champions VGC, 6.1% run Effect Spore), Amoonguss (#134 in National Dex OU) and Breloom (#157 in National Dex OU).
Effect text from Pokémon Showdown (MIT); which Pokémon have it from Showdown's Pokédex, cross-checked against PokéAPI. Unofficial fan site.