Forbidden Obelisk

Adapated from Genuine Fantasy Press

Level 4 Conjuration

(Druid)
Casting Time: Action
Range: 30 feet
Components: V, S
Duration: Concentration, up to 1 hour
You summon forth a 10-foot-tall, 5-foot-wide obelisk covered in runic inscriptions at an unoccupied space within range. The obelisk occupies the space and can be attacked or moved by creatures, but is Immune to all damage, hovers, and is considered an object for all intents and purposes. The obelisk lasts for the duration.
Any time a creature that can see ends its turn or moves into a space within 10 feet of the obelisk, it must make a Wisdom saving throw to resist trying to read the inscriptions. On a failed save, the creature has the Blinded condition for 1 minute or until the spell ends. On a successful save, for 1 minute or until the spell ends, the creature has Advantage on all Ability Checks and Saving Throws it makes that uses Wisdom. At the end of each of its turns, a Blinded creature can make a Wisdom saving throw, ending the effect on itself on a success.
Once a creature has read from the obelisk, it can't do so again for the next hour.
Using a Higher-Level Spell Slot. The distance in feet that a creature must be from the obelisk to read it is increased by 5 feet for each Spell Slot level above 4. For example, 15 ft. (level 5), 20 ft. (level 6), and 25 ft. (level 7).