Board Thread:Warhammer 40k General Discussion/@comment-46.162.84.254-20130704080553/@comment-14745711-20140708025238

Yes but they would never do that because it would cause a cosmic imbalance. But in reply to Callum's previous statement, Tyranids cannot use necrodermis to replace biomass. Plus on a fully active tomb world EVERYTHING can be sterilised. Thus if the attacking nids get disintegrated (which is what Necron weapons do) then they have no biomass that they can use. Besides Necron spaceships can just blast the Tyranids apart through overwhelming fire power. And the Necrons will always have a power source. Unless the Tyranids blow up the stars, stop the wind from blowing etc.

The thing necrons have to fear, is the Tyranids eating everything before they are ready to fight back on a major scale. The Silent King is already trying to rally his people to destroy the nids before they become too dangerous. Whichever race is more powerful will only be decided by futures events, and we will never know how those turn out.