Apollo/Diana may unleash pestis at will. To impose a pestis on a region, Apollo/Diana places the palus pestis (the fen of infirmity) on that region's banner. Only one pestis may occur at any time. A pestis may be imposed only during an aestas (or the motus period immediately prior) and it may not last longer than one aestas. Once pestis has been placed upon a region, all mortal players must flee that region. All provisions of motus apply to players fleeing a pestis. Once Apollo/Diana has removed the pestis at or before the end of the aestas, players may return to the region at will.
War is the greatest plague that can afflict humanity, it destroys religion, it destroys states, it destroys families. Any scourge is preferable to it.
Martin Luther