Expert Collector of Rattlevipers Expert Collector > Page: 42 Acquiring Req.: Collect at least 50 Rattlevipers. Reward: When collecting Rattlevipers, the Collectable Item is doubled. Rattleviper Lv 66 Legendary Rattleviper Hunter Natural Enemy (61-70) > Page: 7 Acquiring Req.: Kill at least 539 Rattlevipers. (Rattleviper's Natural Enemy Title is required.) Reward: Killing Rattlevipers grants you bonus XP. Rattleviper Lv 66 Rattleviper's Natural Enemy Natural Enemy (61-70) > Page: 7 Acquiring Req.: Kill at least 231 Rattlevipers. Reward: Killing Rattlevipers grants you bonus XP. Rattleviper Lv 66