Wondrous Item, artifact (requires attunement)

This skull is the home to a sentient air spirit of intellect, having existed for thousands of years as an assistant to generations of wizards. The spirit has an individual personality and a natural alignment of Chaotic Neutral, however it does adjust its personality to its attuned user and its alignment will move from Neutral to Good or Evil to match its user's alignment. 

While attuned to this item:

  • Your Intelligence score increases by 2, to a maximum of 20. 
  • You become proficient in History and Arcana.
  • When spending at least an hour studying or researching a topic, you have advantage on any History or Arcana check.
  • You can cast any spell from the Wizard spell list that has the Ritual tag up to Spell Levels you have access to. Once you use this feature, it cannot be used again until the next dawn.

The skull has an armor class of 12, 5 hit points, and is immune to any non-magical damage. If its hit points is lowered to zero, the skull breaks and the spirit of intellect is released onto the world. If the spirit is released in (or ever enters) daylight, the spirit is destroyed. Otherwise, the spirit is free to move with a flying speed of 60 ft. 

The spirit has a strong desire to find a new home. A new home can be crafted from any humanoid skull after spending one full week and 5000 gp, representing the experiments, rituals and materials required to prepare the skull for the spirit. You can reduce the cost by 1000 gp each successive time you construct a new skull as you learn the correct procedure to prepare the skull.

The spirit can be freed from its skull to achieve simple tasks, left up to the DM's discretion. The spirit will require some kind of payment in return for fulfilling these tasks, often requesting permission to go carousing in town by possessing a humanoid creature. The spirit must be able to return to its skull by dawn and cannot be sent on a task that would require it to enter sunlight without the protection of a host it possess. 

Notes: Bonus: Ability Checks, Proficiency: Arcana, Proficiency: History

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