Onyx bolts can be enchanted through the spell Enchant Crossbow Bolt (Onyx) by a player with level 87 Magic. The spell enchants 10 onyx bolts at a time, and once they are enchanted they become enchanted onyx bolts and gain a special ability. Elite Treasure Trails may also feature 12 onyx bolt tips as a reward. Ninja implings can be looted for 4 tips or 2 bolts. Up to 73 tips or 57 bolts can be looted from a kingly impling. The rare drop table may also drop these in stacks of 150 at a time.