Natural resistance is an ability possessed by Guild Lords, Prophecies bosses, and bosses from Istan which reduces the duration of hexes and conditions on them by half.
Notes
While this ability is in general beneficial, certain skills that have secondary effects upon hex/condition termination can exploit the half-duration caused by this ability, turning it into a liability, such as Wastrel's Worry, Wastrel's Collapse,Lighting Surge, or Shatterstone.