Board Thread:Speculation House/@comment-1839918-20160301193534/@comment-25396609-20160319030717

ChishioKunrin wrote: Well, I think they confirmed somewhere that Raven's blades are Dust blades, so it is possible that Adam's sword is a Dust blade. In which case, his sword has fire properties.

Ravens are pretty obviously dust, given she has a rotating sheath with multiple of several colors.

I notice dust systems with rotating components are VERY common, come to think of it.