[quote=arowne97]
but...necrons pull themselves back together when revived.
[/quote]

It wouldn't stop them from resembling them self in fact it would improve that ability. The dust would affect them in other ways for example the Automaton gain sentience due to being expose to a large amount of dust.

[quote=Mtntopview]
What is the dust!?
[/quote]
[hider=The Dust.]Created by the Endless the dust are Nano-machines and Nano-computers designed to maintain their society. Some used these infinitesimally small machines to help maintain their biological bodies, while others used constructs of these Nano-elements -- known collectively as "Dust" -- as virtual bodies once they uploaded themselves. The technology was sufficiently advanced to self-replicate itself and self-assemble. While individual motes of Dust had very limited computing power, the ability to "talk" and network was built in. As a result, "clouds" of Dust could form extremely sophisticated systems. Two versions of the dust the first is manipulating the physical world: Improving building and transportation systems, attacking crop diseases, cleaning and sterilizing living spaces, etc. The other was to Dust to aid in communication and transport. It was refined to provide virtual bodies, pass electronic signals, collect and store energy, etc. But after the fall of the Endless civilization much knowledge on who to use the dust was lost. But some of people can become infected by the dust allowing them to gain supernatural powers the cravers can use it in a limited amount using mostly to augment their bodies.[/hider].