I've seen Bone Shards get some discussion in the testing thread and on Reddit but I didn't see a thread here.
This can support sacrifice/Aristocrats and can be a discard outlet for reanimator. I support aristocrats and have been thinking of playing it. Black has gotten a lot of good removal lately so it has a lot of competition but its a pretty unique card that works in multiple decks. I might cut my last Doom Blade variant (Heartless Act) for it.