collective minimum or maximums from multiple rolls
REROLLS are the world’s way of saying “you basically got this man” or “nah your gonna straight whiff that thang”.
REROLLS point specifically to a RESULT ROLL, POTENCY ROLL, or both of them.
A positive REROLL means you ROLL that many additional times, and then take the highest option.
1d4 with a REROLL of +1, i roll 2d4 and get 1 & 4, i take 4
A negative REROLL means you ROLL that many additional times, and then take the lowest option.
1d4 with a REROLL of −1, i roll 2d4 and get 1 & 4, i take 1