[Hallow's Inn] Book of Lost Souls (Patreon)

Wondrous item, rare (requires attunement)

If you consider yourself a Krick-army knife of useful skills, but lack one particular facet in your arsenal, the book of lost souls could be for you. This book allows you to immerse yourself in slain creatures’ knowledge, potentially learning something that can help you in your adventures. The tricky part is finding a worthy soul, and capturing it!

Soultrap. As a bonus action, you can open this book and proffer it forward, shining its inner light on a creature you can see within 30 feet of you. If the target is CR 11 or lower, it must succeed on a DC 15 Charisma saving throw or become soulbound to the book for the next minute. A creature that succeeds on the saving throw is immune to this book’s Soultrap property for the next 24 hours.

The book can store a maximum of three souls. If a creature dies while it is soulbound to this book and on the same plane of existence as the book, and the book doesn’t contain its maximum number of souls, the creature’s soul becomes trapped within the book indefinitely. You can release a trapped soul as an action, or another creature can release a soul with the wish spell. A creature whose soul is trapped with the book can’t be brought back to life by any means.

Souldelve. As an action, you can open the book and stare into its depths, looking into one of the souls stored in the book that you choose. Make an Intelligence (Arcana) check contested by the soul’s creature’s Charisma (Deception) check. If the creature’s soul wishes to aid you, you automatically succeed on this check. On a failure, you take psychic damage equal to the trapped soul’s CR. On a success, you can choose either Knowledge or Proficiency.

• Knowledge. You learn something the creature knew in life. You can ask the GM one question that can be answered with a yes or no. If the soul knows the answer, the GM must answer truthfully. If the creature doesn’t know, you receive ‘unclear’ as an answer.
• Proficiency. You learn all the skills with which the creature was proficient and choose one of them. For the next minute, you have proficiency with that skill.

------------------

Uncommon variant: Reduce the DC to 13, the CR to 6, and the number of souls that can be stored in the book to one.

Very rare variant: Increase the DC to 16, the CR to 16, and the number of souls that can be stored in the book to four.

Legendary variant: Increase the DC to 17, the CR to 21, and the number of souls that can be stored in the book to five.

Download Here