Gem tracer

Gem tracer was a powerful spell commonly used by dragons.

Effects
This spell was used to create a permanent link to an object or item by using a focus. The focus acted like a locate object spell but with unlimited range. It also allowed the creature holding the focus to scry the enspelled object.

Components
In addition to verbal and somatic components, this spell required a focus, a gem with a value of 100 gp or more.

History
According to legend, this spell was created by the dragon whose hoard was first raided.