Scrying (spell)

Scrying was both an arcane and divine magic spell that allowed the caster to view a subject at great distance and possibly across the planes of existence. The effect was very similar to using a crystal ball but with differences in scope, duration, and components. Newer versions of this spell allowed the caster to hear as well as see the subject.

This spell has been known by many names throughout history. It was originally invented by the archwizard Anglin of Seventon in &minus;1939 DR and called Anglin's mirror because it changed an ordinary mirror into a scrying device. Over time, Anglin's name was dropped and this spell became known as magic mirror. Clerics received a similar spell they called magic font because it used a basin of holy water as the scrying surface. Druids (and some clerics) had a more limited version they called reflecting pool for the same reason.

Effects
For all versions of this spell, the chance of success was increased by knowledge of the subject. If the subject was a location, then scrying was much more likely to succeed if the caster had been to the location rather than having a picture or having it described to him or her. If the subject was a sentient being, then the more familiar the caster was with the person the better. Additionally, having a personal possession, something that was worn by the subject, or an actual piece of the subject (hair clipping, a vial of blood, etc.) also improved the chance for success.

The early versions of this spell allowed the caster to see the subject but not hear what was being said or done at the subject's location; however, they did allow viewing across other planes of existence (difficult, but possible). Later versions added auditory scrying but the latest version was limited to subjects on the same plane as the caster.

The casting time for this spell was typically one hour,   but the latest version reduced this down to ten minutes. The viewing time for the earlier versions of this spell depended on the chance of success (which was directly related to familiarity with the subject) and could be as low as ten minutes once a day to as high as one hour three times per day. A later version gave a number of minutes proportional to the level of the caster. The newest version was limited to ten minutes as long as the caster maintained concentration.

Sensory organ
The scrying spell worked by creating a sensory organ that was an adjunct of the caster's sight and, if the spell allowed, hearing, even if the caster was visually or hearing impaired. Thus, any enhancements to the caster's senses, such as darkvision, see invisibility, comprehend languages, tongues, and read magic, operated through the scry. If the subject was a location, then this sensor was stationary at that location, otherwise it followed the subject for the duration of the spell.

Casting spells through the scry
All but the newest version of this spell allowed a limited set of other spells to be cast through the connection to the sensory organ and operate at the observed location. The higher the level of the caster, the better the chance that these spells would succeed. Over the ages, the spells that could be attempted through a scrying were: detect chaos, detect evil,  detect good,    detect illusion, detect law, detect magic,    and message.

Detection and thwarting
For the earliest versions of this spell, creatures that had sufficient intelligence had a small chance every minute to notice they were being observed. This chance increased with intelligence and experience level. A later version simplified this to the same chance for all beings with average or better intelligence. For the newest version, creatures that could see invisible objects could see the sensor as a floating orb about the size of a human fist. Once detected, the sensor could be dispelled by dispel magic.

Scrying was blocked by antimagic field, sheets of lead, mind blank, and nondetection. Other methods included the wardmist spell, a weirdstone, and even the semi-precious gemstone tchazar caused scrying to be blurred within a two foot (sixty centimeter) radius.