The Dice of Death & Dismemberment™ is a simple upgrade to any RPG, bringing 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 back-stabbing their very best friend.