hothie said:
To answer the original question, I think the player should re-roll the correct number of dice, regardless of the original roll. Same with the floor question, re-roll it.
But to bring up another point, I was just reading a thread that talked about probabilities, and it's important to consider that each die roll is an individual event. Whether you rolled all blanks on the first roll or not has no bearing whatsoever on your re-roll. And in the original example, the defender rolled 3 dice instead of 2. The probability is actually higher for rolling blanks with 2 dice than it is for rolling blanks for 3 dice.
The math, for those who wish to see it.
# of blanks on 1 die: 3 (note: it's actually 2 on an attack die)
# of sides on 1 die: 8
Probability of rolling a blank on 1 die: 3/8, or .375
Probability of rolling all blanks with 3 dice: (3/8)^3, or 27/512, or .052734
Probability of rolling all blanks with 2 dice: (3/8)^2, or 9/64, or .140625
So, I guess my point is, if the original roll was all blanks, the re-roll has a better chance of being all blanks than the original roll was. And either way, the 2 rolls are individual events, so the first roll doesn't affect the second roll at all. Just remember, Karma isn't a ***** unless you are…
Myself: In the case of too many dice rolled, normally reroll entirely. The exception would beif you have some idea that someone is doing it deliberately, or wouldn't play fair (ie that they would point it out if they remembered they had done it wrong afterwards and it was negative to them, but wouldn't do the same if they realised but the overall result was positive to them). In that case: stick with it if was a total fail, or possibly remove them starting with positives if you have mixed results. However, I wouldn't make this the normal approach, as I don't like very adversarial relationships and rules in games. They are only necessary in adversarial settings (ie formal competitions and the like), and otherwise I play as if I am playing with friends.