Nightmare Shroud (One per army) — 30 points
The Nightmare Shroud may be activated in the Shooting phase instead of firing a weapon. Every enemy unit with a model within 12" of the Necron Lord must take a Morale check as though they had taken 25% casualties. All the normal exceptions apply, ie, units that will never fall back are immune to the Nightmare Shroud.
Errata — Chapter Approved: Codex: Necrons Q&A (v2.0): If an enemy unit in close combat with Necrons is hit by the Nightmare Shroud and falls back (this happens in the Shooting phase), the Necrons it was fighting cannot advance to finish it off that same phase — that would disrupt the normal sequence of play too much. They can, however, still shoot at or assault the fleeing unit afterwards if it remains in range.