Vox Disruption (Sabotage Action)
Codex Supplement: Alpha Legion, p. 19
When this Sabotage Action is successfully performed, select a single enemy unit within 12" of the model performing the Sabotage Action. Until the start of your next Shooting Phase, each time the affected enemy unit attempts to take act in the Movement Phase, Shooting Phase or Charge Phase, it must successfully pass a Leadership Test. On a failed Leadership Test, the affected enemy unit may not perform an action that Phase.