User blog comment:Lord Loss/Monster Appreciation Day: Royal Ludroth/@comment-4659568-20111229184729

Not sure if this place is the right spot for this kind of question, but it relates to this monster. It is about upgrading the Ludroth bow in 3G, and you need 4 of some bone (has a purple skeleton icon), and I can't find anything about it. Was only curious if anyone happened to know what it is, wanting to upgrade the bow.