 This can either be the top card of the discard pile (so long as it is not a "power card"), or the top card of the draw pile.Anyone who takes a card from the discard pile uses it to replace one of his or her face down cards, and puts that card on the discard pile.If a player draws a number card from the draw pile, they may either use it to replace one of the face-down cards, or place the drawn card directly in the discard pile.