Expert Collector of River Goblin Rangers Expert Collector > Page: 3 Acquiring Req.: Collect at least 50 River Goblin Rangers. Reward: When collecting River Goblin Rangers, the Collectable Item is doubled. River Goblin Ranger Lv 21 Legendary River Goblin Ranger Hunter Natural Enemy (21-30) > Page: 1 Acquiring Req.: Kill at least 119 River Goblin Rangers. (River Goblin Ranger's Natural Enemy Title is required.) Reward: Killing River Goblin Rangers grants you bonus XP. River Goblin Ranger Lv 21 River Goblin Ranger's Natural Enemy Natural Enemy (21-30) > Page: 1 Acquiring Req.: Kill at least 51 River Goblin Rangers. Reward: Killing River Goblin Rangers grants you bonus XP. River Goblin Ranger Lv 21