A REVIEW OF D20

When an amount is always 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 commonly taken to become zero or 1; As an example, in the event the dice roll determines the level of damage to a creature.[forty one][42