The only way that I think that it would work would be to have it as a voodoo curse. This is something that would upset balance if it was able to be done on a regular basis. Make it a voodoo card, and a player could use it from time to time for some of the reasons mentioned above (i.e. holiday/vacation, sleep, nation payout, etc.).
Otherwise, I am -1 for making it an additional game feature.
Slindur