Add a subrule to “Remedies”, called “Stories”:-

Every family in Zahndorf has its own encouraging or cautionary tale about folk medicine. If they have not yet done so during the current dynasty, a Villager may privately contact the Doctor asking to recall such a story. In response, the Doctor should select a secretly random Remedy, and then select either its “Cure” or “Cause” quality in a secretly random manner (even if it cures or causes nothing): the Doctor then privately informs the Villager of that quality.

In “Numbers and Variables”, after “This value must be determined by an appropriate DICE roll in the GNDT, unless otherwise specified.” add:-

If a selection is explicitly specified as being “secretly” random, the Villager making this determination may do so using a private method of their choosing, instead of the GNDT.