Scribe weather symbols [823]
----------------------------
Usage:  USE 823 <spell>

Required aura:  two points
Required item:  blank scroll [84]
Time to cast:   seven or more days

Transcribe the given spell onto a blank scroll.  The blank scroll will
be consumed, and a new unique scroll will be produced.  The scroll will
permit one character to learn the spell from the scroll.

Example:

    USE 823 nnnn       # make a one-time study scroll for spell nnnn

Only Weather magic [820] spells may be scribed with this skill.

The spell must be known by the character in order to be written.
The character will still know the spell after it has been scribed.

This spell requires as much time to cast as the skill takes to learn.
It takes two weeks to write a spell which requires two weeks of study
to learn.