THE ULTIMATE GUIDE TO DICE

When an total should be to be subtracted, the notation is nds-c or nDs-c; so 3d6-4 instructs the player to subtract 4 from the results of rolling 3d6. If the results of a modified dice roll is destructive, it is frequently taken to become zero or a single; As an example, when the dice roll decides the quantity of damage to a creature.[forty one][42