Actually, Tiny kidnapped monsters attacking the PCs would be hilarious! But I do prefer the Small limit instead.
Agreed.
As mentioned before, we don't
really need to figure out the spatial mirror or "transport trap", since those are more scenario-specific scenery.
We could stat up the
scry mirror, since all the kamerel spellcasters have that spell prepared and it crops up a lot in the adventure.
The original spell description is:
Tales From the Infinite Staircase
SCRY MIRROR: Not nearly as powerful as a magic mirror spell, a scry mirror is limited to looking upon an area already shown in a mirror somewhere. The target mirror must be within 10 miles per level of the mirror’s creator and the user must be aware of its exact location and position.
No spells can be cast through a scry mirror. Once the scrying attempt is finished, the mirror shatters. It takes a full day to create a scry mirror—although once created, they last up to 3 weeks + 1 week per level or HD total of the creator.
The
magic mirror referred to above is a 4th level Wizard spell. It's pretty much the arcane version of the
scrying spell in 3E. Here's the 2E Player's Handbook spell description:
Magic Mirror
(Enchantment, Divination)
Range: Touch
Components: V, S, M
Duration: 1 rd./level
Casting Time: 1 hr.
Area of Effect: Special
Saving Throw: None
By means of this spell, the wizard changes a normal mirror into a scrying device similar to a crystal ball. The details of the use of such a scrying device are found in the DMG (in Appendix 3: Magical Item Descriptions, under the description for the crystal ball).
The mirror used must be of finely wrought and highly polished silver and cost not less than 1,000 gp. This mirror is not harmed by casting the spell, but the other material components—the eye of a hawk, an eagle, or even a roc, and nitric acid, copper, and zinc—are used up.
The following spells can be cast through a magic mirror: comprehend languages, read magic, tongues, and infravision. The following spells have a 5% chance per level of the caster of operating correctly: detect magic, detect good or evil, and message. The base chances for the subject to detect any crystal ball-like spell are listed in the DMG (again, in Appendix 3: Magical Item Descriptions, under the description for the crystal ball.
So, in 3E terms,
scrying mirror is basically the
scrying spell with a really impressive duration but its magical sensor is fixed to the location of a mirror somewhere within 10 miles per caster level. Plus, it uses a mirror as a disposable material component instead of a reusable focus.
Shall we stat that up?
Hmm, comes to think of it. Is a
scrying mirror fixed to one particular mirror when cast, or can the caster switch the sensor from mirror to mirror? In the adventure, there's a location ("5. More Empty Rooms") that says:
Nen Itan, their overall leader, watches through a
scry mirror (he has many) to monitor the exits and the progress of any non-kamerel that he knows are within Timaresh.
That suggests the viewpoint is switchable, since he use
a scry mirror (e.g. a single casting) to look at many exits and follow the progress of one or more target creatures.