Add a new Rule titled ‘Manipulation’:

Twice every seventy-two hours, a Traveler may Attract another Traveler towards emself, afterwards posting a notice to the front page. If D is the distance in years between the two Travelers (taken to be a positive quantity), let M be defined as I*DICE(3I)/DICE(D^2), rounded up to the nearest integer, where I is the Influence of the Attracting Traveler.  If the Attracting Traveler has a later date then the Traveller being Attracted, the increase the latter’s TL by M years, but not past the TL of the Attracting Traveler. If the Attracting Traveler has a earlier date then the Traveller being Attracted, then decrease the latter’s TL by M years, but not past the TL of the Attracting Traveler.

Twice every seventy-two hours, a Traveler may Repel another Traveler away from emself, afterwards posting a notice to the front page. If D is the distance in years between the two Travelers (taken to be a positive quantity), let N be defined as I*DICE(2I)/DICE(D^2), rounded up to the nearest integer, where I is the Influence of the Attracting Traveler. If the Attracting Traveler has a later date then the Traveller being Attracted, the decrease the latter’s TL by N years. If the Attracting Traveler has a earlier date then the Traveller being Attracted, then increase the latter’s TL by N years, but not past the TL of the Attracting Traveler.