We'll Be Back!
(Rule)Description: Any model with the Necron special rule that is reduced to 0 wounds, or would otherwise be removed as a casualty, is instead laid on its side to show that it's damaged. At the start of every Necron turn, damaged Necrons with 6" of a model of the same type may self-repair. On a roll of 1-3, remove the model as normal. On a 4-6, the Necron is repaired and stands back up with 1 Wound remaining and joins the closest unit of the same type.
A model cannot self-repair if it was destroyed by a close combat weapon that allows no Armour saves or any weapon whose Strength is twice the Toughness of the Necron. Models destroyed due to a failed 'Death or Glory' attack may not be repaired by any means.
Necron Lords do have need to have another model with 6" in order to self-repair.