Gheist Storm

While an enemy unit is within Dread range of
this model, each time that unit is selected to
shoot or charge it must perform a Dread test. If
that test is failed, then until the end of the phase:
•Models in that unit may only make range
attacks against the closest eligible target or Chaos
Knights unit.
•If that unit declared a charge against any
Chaos Knight unit's, any charge rolls made for
that unit are halved.