On the Crippled God's Island, after Iron Bars kills Rhulad, Withal says to him "They were broken blades, I think. Those black shards. From some kind of narrow-bladed, overlong knife. Two of them, black and brittle. Just pieces, really. I wonder where he collected them from?"
Referring to the black shards within the sword. Do we have any idea what those blades were? I'm normally pretty good at piecing this stuff together but I can't think of any answers.
ETA - My only real guess is that they were possibly the daggers that Scabandari used to stab Silchas Ruin in the back.
This post has been edited by Followthehollow: 23 February 2017 - 05:16 PM