The Necrons can cause any star to go supernova [i]at will.[/i] :D

They just don't because that really screws up cosmic balance or... Something.  It was weird.

[quote=Raineh Daze]
So they stop playing nice and actually focus the Imperial Navy. If it's a slugging match, the Imperium [i]wins[/i]. They've got too many ships, and something that threatening would have them actually focus the insanity that is its disparate forces.
[/quote]

Or they just crash an entire Space Marine chapter into it like they did to the World Engine. XD