You've all lost the point of my thread. Your telling me there are seven Void Dragon shards like the one the Emperor faced. Go back and read what happened. Seven. So what's going on with them?
Can you direct me to where somebody mentioned a specific number of any shard?
They on vacation? I'm saying that that thing is too powerful.The most powerful psyker in the history of the materium couldn't destroy a weakned fraction of the Void Dragon. He had to put together an elaborate prison with supernatural guardians to keep it contained.
A fraction of its mind, not its power. Remember, each shard still possesses the near unlimited power of its forebear, it is reasonable to assume that this would include their inherent resilience. The Dragon Shard was at a reduced mental capacity, not reduced power. You keep harping on about the thing being too powerful to make sense, ignoring our repeated answers that the shards DO NOT HAVE THE WIT TO USE THEIR FULL POTENTIAL. Their minds and memories are what was fractured remember? This was precisely the necons' plan, not to destroy them, but to make them more manageable.
The C'tan, to my knowledge do not have the technology to create a prison like the one on mars. It's ridiculous enough to think the C'tan gave the Necrons the tech to destroy them but to imprison them as well would be ludicrous. The enemy they were both fighting were warp based and nothing like the C'tan, why would they give the Necrons tech to destroy or imprison them?
The necrons were capable of brilliant science even before the c'tan gave them further knowledge. It is not unfeasible to think they could modify certain technologies to better work on the c'tan. Remember the gk use tesseract labyrinths to imprison daemons? Maybe following the intervention of the eldar gods, the labyrinths were designed by the c'tan to imprison their enemies? Again, I wouldn't put it past the necrons to input their own innovations should it prove advantageous.
The shard that was in Nightbringer was more believable. Weakened but still powerful, the Nightbringer had wasn't a night omnipotent fraction. I highly doubt that if even one of the Void Dragon's shards were to awaken or return, at what we saw it capable of in Mechanicum, anything in the Imperium or Necron forces would be able to stop it from taking out Mars's defenses and unite with the other shard there. Waaaay too powerful.
You're assuming it has the knowledge of being shattered into shards, or even knowledge of the necrons. This particular Dragon Shard seemed wholly obsessed with its defeat at the hands of the Emperor, and it even had trouble remembering that with clarity. Again, unlimited power means little under the restrictions of having such restricted knowledge of what it really is and what it can do.
The Dragon Shard would have been capable of warping the entire planet, reducing the Emperor to subatomic ash and bleeding the life from the Earth's sun. If it was a threat, it would have defended itself more vigorously. The fact that it didn't lends credence to its inability to perceive things on the scope it once could.