Forgotten Ruler's Natural Enemy Natural Enemy (21-30) > Page: 23 Acquiring Req.: Kill at least 51 Forgotten Rulers. Reward: Killing Forgotten Rulers grants you bonus XP. Forgotten Ruler Lv 23 Legendary Forgotten Ruler Hunter Natural Enemy (21-30) > Page: 23 Acquiring Req.: Kill at least 119 Forgotten Rulers. (Forgotten Ruler's Natural Enemy Title is required.) Reward: Killing Forgotten Rulers grants you bonus XP. Forgotten Ruler Lv 23