Press Your Luck is a Fluxx promo card that can be used in any version of the game. It reads:
"Reveal the top cards of the Draw Pile one at a time. At any point, you may stop and add the cards you revealed to your hand. However, as soon as you draw a Keeper or Creeper, you must stop. Place that card in front of you and discard all of the other cards you revealed."
This card was released to celebrate and promote the launch of IceDice, a press-your-luck game using Looney Pyramids.