R: [dice]x100 ft; T: point in space; D: concentration
Summon an invisible sensor to a point in space you designate. You do not need line of sight. If you have something to scry onto, like a mirror, pool, clouds, or bonfire, you can see what the sensor sees.
At 2 [dice], you can hear through the sensor.
At 3 [dice], you can speak through the sensor.
With a flawless crystal ball, the range is [dice] miles. These are rare and worth up to 3000d.