SPELL_ENCHANTWEAPON

Usage       : cast enchant weapon <weapon>
Accumulative: No
Duration    : Permanent
Level       : Level 12 mage
Mana Usage  : 100

This spell will enchant non-magical weapons only. A weapon without any
applies is considered non-magical. To determine if a weapon is suitable
for enchantment, IDENTIFY it.

The enchantment will modify the weapon as:

Level    Hit Roll    Damage

 0..17     +1         +1
18..19     +2         +1
20..24     +3         +2
25..29     +4         +3
30..31     +5         +4

Alignment also plays a part in using this spell. If the player enchanting
it is evil, the weapon becomes Anti-Good. If the player enchanting it is
good, the weapon becomes Anti-Evil. If the player enchanting it is
neutral, there is no alignment restriction on the weapon being enchanted.