enchant arrow

Help on spell enchant arrow:

Spell point cost: 45 (6%)
Casting time (0%): undefined, no combat points in casting. (600)
You have an estimated chance of 82% to succeed casting this spell.
Casting process is verbal.
Intelligence, Wisdom and Archery help in casting this spell.
Elements: Air  0, Earth  0, Fire  0, Water  0, Magic +1, Antimagic -1.
Affiliated stats:
         Primary: wisdom
       Secondary: intelligence
        Tertiary: constitution

This enchant spell imbues normal arrows and other ammunition with lasting
magical durability and sharpness, so that a part of every hit strikes as
pure magic. Each piece of ammunition can hold only one such enchantment.
The spell can be cast on multiple arrows by placing them inside a quiver
and casting the spell on the quiver. Note that you will lose mana for
each arrow you enchant. Unlike the leyline shot skill, this spell does
not release spells through your shots - it strengthens the ammunition
itself.