Dark Gloom

Its pollen has such a strong smell that it even confuses itself at times.

Pokemon Power — Pollen Stench: Once during your turn (before your attack), you may flip a coin. If heads, the Defending Pokémon is now Confused; if tails, your Active Pokémon is now Confused. This power can't be used if Dark Gloom is Asleep, Confused, or Paralyzed.

Poisonpowder (10): The Defending Pokémon is now Poisoned.