Time Scry

You crush the gemstone and use it to fill the hourglass, and then set the hourglass. For the duration of the spell, as an action, you may manifest a still image illusion of the location around you from the past by specifying the length of time in the past you wish to view. You may look back into the past a number of years equal to 100 times your proficiency bonus plus one. (100x(Prof+1)). You cannot look into the future. When the spell is cast you may choose any number of creatures you can see within 30 ft. that will also be able to see the images you manifest. If you move more than 150ft from the location the spell was cast the spell ends.