You must hold the Feldspar up to a source of natural light (sun, moon, star, or creature, any natural phenomenon which isn't man made) and make an intelligence saving throw against a 10 spell DC. If successful, the stone becomes enchanted. Looking through it will cause it to project divinatory sensations into your mind of the room or area in front of you if you are in a dungeon or settlement, or the next most proximate 500ft cube of the open road if you are travelling. Alternatively, holding the stone up to the light and speaking the name of an object you have held, a creature you have met or destination you have visited, will cause the stone to reflect all the light around it in a 10 ft radius into a focussed beam in the direction of that person, place or object.
If you fail the save your feldspar becomes clouded and you must wait until taking a short or long rest to try again.
* - (a piece of Tolliver's Feldspar which can be reused for subsequent castings.)
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