Greater scrying

Greater scrying was a divination spell that spied on a subject from a distance. It was an improved form of the scrying spell.

Effects
As the name said, it worked like scrying, but functioned for a number of hours rather than minutes and only took several seconds to enact, not an hour.

Furthermore, a number of spells could be cast through the sensor without fail: detect chaos, detect evil, detect good, detect law, detect magic, message, read magic, and tongues.