Expert Collector of Frost Thieves Expert Collector > Page: 8 Acquiring Req.: Collect at least 50 Frost Thieves. Reward: When collecting Frost Thieves, the Collectable Item is doubled. Frost Thief Lv 45 Frost Thief's Natural Enemy Natural Enemy (41-50) > Page: 3 Acquiring Req.: Kill at least 132 Frost Thieves. Reward: Killing Frost Thieves grants you bonus XP. Frost Thief Lv 45 Legendary Frost Thief Hunter Natural Enemy (41-50) > Page: 3 Acquiring Req.: Kill at least 308 Frost Thieves. (Frost Thief's Natural Enemy Title is required.) Reward: Killing Frost Thieves grants you bonus XP. Frost Thief Lv 45