The Dice of Death & Dismemberment(TM) are a quick and easy upgrade that brings fear & excitement back to your combat encounters. The Critical Hit Dice are brutally unforgiving. Characters will walk away from combat changed. That is, if walking is still an option! The Fumble Dice cause even the bravest heroes to embarrass themselves by tripping, flinging their weapon across the room, or backstabbing their very best friend.fun.