The player with this card saved has exclusive use of the White 12-sided die which may be rolled and substituted for the roll of any other 12-sided die (except the Zodiac die) any time during play. For example, suppose that the player with The White Stuff has a bunny in The Bunny Circle that is given a Random FTB. The player rolls the Green, Blue and White 12-sided dice. The value on the White 12-sided die may be substituted for either the roll of the Green 12-sided die or the roll of the Blue 12-sided die.
The White Stuff may only be used once per any card consequence. In the example before, the White 12-sided die could not have been rolled separately for both the Green and the Blue 12-sided dice. Also, neither the Red Timid Bunny nor the White Pawn will allow a re-roll of the White die.