Assisting and Detracting Rolls

There are times when someone may be attempting to help you perform an action, or when you perform some kind of action to prepare you for another, such as studying a manual before attempting to operate a machine, or checking your knowledge of pressure points before attempting a strike. This could also be done against you, for example, one person using a spell against another person's spell to counter it. These types of actions use a different scale than a Difficulty Rating. Rather than being a plus or minus one bonus or penalty per rank, Assisting and Detracting rolls work on the following scale:
Success Rank of Assisting / Detracting Roll	Bonus / Penalty to Following Roll
Critical Failure 	-3
Failure 	-2
Poor 	-1
Fair 	0
Good 	+1
Excellent 	+2
Exceptional 	continue adding +1 to previous rank
The initial roll's success rate will assist (or detract from) the following roll based on this chart. For example, Bruce is in a martial arts tournament, and before attacking his foe he waits and scopes him out for an opening. He makes a Good-ranked Focus roll. Checking the chart above, we see that a Good is worth 1 rank of bonus, so when he makes his attack roll, he can add 1 rank to its success. If Bruce had gotten a Poor, this would mean his bumble actually detracted from his attack (for example, he misjudged something and attacked a spot that was more protected than he thought it was). A good GM should always give the opposition a chance to counter this with an Assisting roll of his own.
Category:Core Rules