Similar in use to the Drama Deck from TORG, but made for D&D/Pathfinder, they allow a player to salvage a run of crappy luck with a one-time use card. And they can be given out as rewards for good roleplaying or being clever without worrying about breaking the game.
7th Sea's Drama Dice mechanic, whereby whenever a player uses a card to improve a roll, that resource is turned over to the Game Master to be used to make the players' lives more complicated.
Everyone who plays D&D or Pathfinder really should consider backing this project -- and it's already fully funded, so you aren't going to get a broken heart by supporting a lost cause! I am looking forward to getting my hands on some and seeing what kind of change it brings to a game.
Go to their Kickstarter page and see what else you can unlock!