Necron AA Obelisk 150 Points
Unit: 1-3 AA Obelisk
Type: Immobile Vehicle
Armor: F(12), S(12, R(12), Living Metal
BS:4
Weapons: 4 Turret Mounted long-barreled Gauss AA Cannons
Long-barreled, AA Gauss Cannon: Range (12"-64"), Str (6), AP (4), Heavy (1), AA Mount, Gauss
Special Rules:
Phase Shift Generator - All units with the Necron special rule with at least one model within 6" receive an 5+ invulnerable save.
Deep strike as Monolith.
Now it's only 4 shots at BS4 with no re-rolls for misses.