Mystic Writing

By casting this spell, the wizard inscribes a message of up to 25 words upon a solid surface, using a special pigment. Any interruption of the inscription process prevents completion of the message, but does not affect words already inscribed. The words glow for one round after they are written, and then fade out. They reappear when a detect magic spell is cast upon them, or when a specified event takes place within 10 yards of the location. When the mystic writing is triggered, it remains for one round and then vanishes.

Triggering events might include the arrival of a certain creature or type of creature known to the caster, a certain date, or events such as “when moonlight strikes this stone,” or “when a bard stands here and plays an elven ballad.” Spells cannot be incorporated into mystic writing. The spell lends itself to permanency.

The material component is the special pigment, which costs 200 gp per application.

Notes: Uncommon spell. (Updated from Polyhedron Newszine.)