Karma is a PC resource frequently gained by performing good deeds or as some other form of reward. It can be lost by performing wicked deeds, particularly in the pursuit of treasure or shortcuts.
Some special cards and Gear require spending Karma to play. Additionally, in life-or-death scenarios, PCs can spend Karma to recover upon being defeated, extend round limits, and various other scenario-dependent effects. These plays reflect the heroic spirit, hidden power, or divine blessings possessed by the PC protagonists.
Karma cannot be spent if it is at 0 or less, but other effects that would cause loss of Karma can push it into negative values. Until Karma is positive again, it cannot be used.