Enchant Crossbow Bolt (Opal) is a spell that allows Opal bolts to be enchanted, making them Opal bolts (e) and imbuing them with a special effect called Lucky Lightning. Lucky Lightning adds a small chance to cause extra damage. One cast imbues up to 10 bolts.

This spell is available at Magic level 4, giving 9 experience. It requires 1 Cosmic rune, and 2 Air runes to cast.

You can experiment with the max hit of the Lucky Lightning effect on our Ranged Max Hit Calculator.