Onyx bolts (e)

Onyx bolts (e) can be created by tipping Rune bolts with Onyx bolt tips and then enchanting them with the Lvl-6 Enchant spell from your Normal spellbook.

These bolts have a 20% chance on hit to hit an additional 10 to 20 damage, and heal your character for 20% of the total damage dealt.

They give +101 ranged strength and can be used with high level crossbows.