This slender piece of white chalk is held in a steel handle, and any attempt to remove it from its handle proves fruitless. The handle has a red button on its underside. Created by the Keeper of Secrets as an implement of destruction, this item's power was greatly diminished when its mistress was sealed away. Recovered by a powerful angel who was irreparably injured, the chalk was imbued with a second sentience through that angel's sacrifice.

Sentience. The Demiplanar Chalk is a sentient lawful evil item with an Intelligence of 30, a Wisdom of 22, and a Charisma of 25. It has hearing and truesight out to a range of 120 feet.

Although the item is capable of communicating telepathically with its wielder, as well as speak, read, and understand all languages, it always chooses inaction, for reasons only it knows.

Personality. An inscrutable and deadly nagpa named Tinker lives inside this item, and is the only inhabitant capable of communicating through it. It bides its time, waiting for something beyond comprehension. Additionally, a powerful solar named Familiar cohabitates the item, forever blinded and rendered incapable of flight by its injuries.

Dormant

Even when not attuned to this item, any person holding it has access to the following abilities:

• You can use an action to draw a doorway in the air with the chalk, whereupon the doorway opens, casting the demiplane spell in your space. Once the chalk has been used this way, it can't be again for one hour. Time spent in demiplanes doesn't count towards recharging this ability. You can't connect the shadowy door to a demiplane that wasn't created with this chalk.
• While inside a demiplane created with this chalk, you can use an action to push the red button on its handle and cast the plane shift spell without requiring components, but you can only use the spell to send willing targets to a teleportation circle on the Great Hunt Material Plane, the sigil of which you must know.

While attuned to this item, you gain the following additional benefits:

• You have advantage on saving throws made to resist being banished to other planes of existence.
• You can use a bonus action to teleport the chalk to your pocket, or to your hand, or to a similar location on your person.

Notes: Advantage: Saving Throws