Venomoth (Jungle 29/64)

Once during your turn (before your attack), you may change the type of Venomoth to the type of any other Pokémon in play other than Colorless. This power can't be used if Venomoth is Asleep, Confused, or Paralyzed.

Grass Grass
Venom Powder

Flip a coin. If heads, the Defending Pokémon is now Confused and Poisoned.