User blog comment:Xilinoc/Ch. 600 - SNIPE/@comment-5693502-20141008195917/@comment-24913480-20141008204616

I don't remember the effects of time on zanpakuto's ever being mentioned in the manga but it is a good question. And while I admit that world breaking remark I made about Nimaiya's power was just a joke, it could be indeed true. We know Yamamoto at full power could wipe out Soul Society (inhabitants AND dimension, or at least, most of it) so it isn't that far fetched to think a Royal Guard could do the same or more. And about that sword glow: it might not be a glow, might mean nothing, might be everything. Whatever it is, it is bad news for the quincies.