Expert Collector of Crazy Bone Silvers Expert Collector > Page: 28 Acquiring Req.: Collect at least 50 Crazy Bone Silvers. Reward: When collecting Crazy Bone Silvers, the Collectable Item is doubled. Crazy Bone Silver Lv 30 Crazy Bone Silver's Natural Enemy Natural Enemy (21-30) > Page: 20 Acquiring Req.: Kill at least 51 Crazy Bone Silvers. Reward: Killing Crazy Bone Silvers grants you bonus XP. Crazy Bone Silver Lv 30 Legendary Crazy Bone Silver Hunter Natural Enemy (21-30) > Page: 20 Acquiring Req.: Kill at least 119 Crazy Bone Silvers. (Crazy Bone Silver's Natural Enemy Title is required.) Reward: Killing Crazy Bone Silvers grants you bonus XP. Crazy Bone Silver Lv 30