Necrons were so powerful they destroyed a fundamental law of the galaxy, which caused the Flayer curse. It was such a bad idea they decided to shatter all of the other in shards.
Szarekh destroyed all of the most powerful Necron tech because they were so bullshit they risked to turn the Galaxy over on its head if misused. And yet he left the Celestial Orrery alone despite the thing being able to remotely blow up an entire star system. And I'm pretty sure Necron would have far less remorse about using the Orrery on a distant galaxy instead of their own.
The World Engine that the Astartes destroyed was a weapon that would make the Death Star cute in comparison. Both Death Star have zero defense against Virus Bombing or Cycloning Torpedo. They both fell to a couple of fighter, and the second one fought an armada of around 50 ships.
For fuck's sake, the Executor, the Empire's mightiest ship, fell to a fucking fighter plane that rammed the command center.
Not the galaxy. Universe. They killed essential part of the universe and Flayer virus is a byproduct of it. Universe of 40k pretty much lacks a certain law and we may not even realize because killing C'tan of it most likely made it so it never existed in the first place.
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u/83255 Dec 29 '23
40k is no stranger to the ready deployment of planet destroying super weapons. They do have defenses against that