Although it never saw competitive play during its lifespan in the Standard format, this card was eventually banned from all official Pokémon events in the Expanded format on September 1st, 2015. This is due to Forest of Giant Plants making it possible to use its Ability, Giant Fan, multiple times in one turn, potentially clearing the opponent's field and defeating them before they could do anything in that match; this combination of cards created an undesirable playing environment, prompting the ban.
Origin
Whirlwind is a move in the Pokémon games that Shiftry can learn. This card's Pokédex entry comes from Pokémon Black and White.