This rule allows the Conductor to reward players for interesting choices they make or fun scenarios that play out. If a player fails in a hilarious way the Conductor can choose to grant them a Fool Die. Conversely, if a player succeeds in doing something in an incredibly epic fashion, the Conductor can choose to grant them a Cool Die.
The player can use a Cool or Fool die to roll an additional d6 to a Skill or Power roll of their choice, even after seeing the result.
They hold on to the die until they use it but cannot have more than 1 Cool and 1 Fool die at the same time.