This is a Creeper that works in any Fluxx deck (not recommended for decks that do not include ways to get rid of Creepers).
It reads, "You cannot win unless conditions say otherwise. The player who drew this card chooses a word. This card is instantly moved to anyone who speaks that word thereafter."
This card was published in 2012 as a peel-off promo postcard to promote the release of Cthulhu Fluxx. In 2020 it was reprinted as a single loose promo.