Flyers. That is All.

It shouldn't come as any surprise that Flyers are the new dominant unit in 40k.  During 5th the dominant units were super cheap, high firepower MSU units and highly destructive Death Stars.  If you've played any games against a flyer heavy army, especially Necrons, then you should know what I am talking about.  A lot of players are sitting around hoping that Flakk missiles will save them with