Black Hand mentioned that those who cheated death for whatever reason--like, for instance, the Hawks, or Ollie--were somehow "in the way." If this is Nekron gathering power, that makes sense--every soul he loses, the further from our reality he goes.
Making me wonder if they'll bring back that "open wound in space" that Nekron had been exploiting. Given the predilection for guck and splatter in GLC, I imagine they will, in MUCH more detail.