---

publish: true
aliases:

• Fulminating Treatise
  created: 2026-03-09T12:15:34.134-04:00
  modified: 2026-03-09T12:15:34.134-04:00
  published: 2026-03-09T12:15:34.134-04:00
  tags:
• ttrpg-cli/compendium/src/5e/tce
• ttrpg-cli/item/attunement/required
• ttrpg-cli/item/gear/spellcasting-focus
• ttrpg-cli/item/rarity/rare
  cssclasses:
• json5e-item
  obsidianUIMode: preview

---

Fulminating Treatise

Wondrous item, spellcasting focus, rare (requires attunement by a wizard)

• Weight: 3.0 lbs.

This thick, scorched spellbook reeks of smoke and ozone, and sparks of energy crackles along the edges of its pages. When found, the book contains the following spells: contingency, fireball, gust of wind, Leomund’s tiny hut, magic missile, thunderwave, and wall of force. It functions as a spellbook for you.

While you are holding the book, you can use it as a spellcasting focus for your wizard spells.

The book has 3 charges, and it regains 1d3 expended charges daily at dawn. You can use the charges in the following ways while holding it:

• If you spend 1 minute studying the book, you can expend 1 charge to replace one of your prepared wizard spells with a different spell in the book. The new spell must be of the evocation school.
• When one creature you can see takes damage from an evocation spell you cast, you can use your reaction and expend 1 charge to deal an extra 2d6 force damage to the creature and knock the creature prone if it is Large or smaller.

Source: Tasha’s Cauldron of Everything p. 128