This spell allows the Caster to broadcast a tightly focused beam of ultrasonic sound that penetrates deeply into any material. The reflected sound gives the caster a reasonably accurate picture of the interior of the material being observed. He can peer within mechanisms to see how they function, or look for injuries or malignant growths inside a being. The sound beam is extremely short ranged, losing most of its effectiveness after a few meters.
This little-used spell allows the caster to hear and converse in the ultrasonic range. This can be useful when listening for sonar use, or when several mages need to converse in privacy. Normal humans will hear nothing beyond a slight high-pitched whining sound when the caster speaks.
The caster creates a globe of murkiness which overwhelms all normal fires or lights in an area. (These are not actually extinguished, but their light output is greatly reduced.) The caster holds a small tinder which is consumed to ash.
By appealing to a creature's subconscious delights and whims the caster causes the being to begin dancing and frolicking uncontrollably, to the near exclusion of other activities.
The caster instigates a powerful ultrasonic burst. This will only harm solid, rigid surfaces, such as walls, wall spells, metal, stone, etc.