Banish into Fable

A curse unique to Fey Storytellers, you attempt to seal away one creature you can see within range into a magic storybook, gaining control over their Written Story.

The target must be successfully Banished; then, their very essence must be drawn into the magic ink used to inscribe their story, which consumes that component, trapping them within a Magical Storybook. 

Banishment. The target must succeed on a Charisma saving throw or be banished into a harmless demiplane in the shape of a story. While there, the target is incapacitated, their story as it has been Written effectively frozen in time. The Storybook is permanently expanded to accommodate for the length of the creature’s story. You make all the decisions about the narrative style, but the target’s life events are accurately reflected within the text, as determined by the GM.

The Banishment lasts for one minute, until the caster loses concentration, or the storybook is destroyed, at which point the target reappears in an unoccupied space within 5 feet of the book.

Once a creature has been Banished for one minute, their story remains within the book for 30 days, although it can be inscribed into a new book as a typical fairy tale.

A Frozen Tale. If the spell lasts for one minute, the target must succeed on a Wisdom saving throw when the spell ends. If it fails this saving throw, it remains frozen within the story as inscribed within the storybook. At the end of 7 days, the target may attempt to make the saving throw again, repeating it every week. If the target fails 3 of these saving throws, they remain frozen within the story for a year and a day beginning at the point when the story was first written in the book. If the creature succeeds on 3 of these saving throws, they become immune to the effects of A Frozen Tale, at which point the target reappears in a space within 5 feet of the storybook or in the nearest unoccupied space if that space is occupied.. The only way to remove a creature prematurely from their frozen tale is via remove curse (targeted on the storybook), the wish spell, or if the book is completely destroyed.

Only a creature with an Intelligence of 4 or more may be affected by A Frozen Tale, although they may still be targeted for Banishment.

While a creature is frozen within their story, it may have ripples across the stories of others, with unknown effects on the world and the grand story.