The Arcanum Celestis Grimoire is an artifact of profound magical potency, steeped in mystery and shrouded in celestial light. This massive tome is bound in midnight-black leather adorned with intricate, golden etchings that form constellations and arcane sigils. When opened, its pages glow faintly, as if imbued with the light of distant stars, and they seem to turn themselves at the will of the reader.
The book's magic is derived from the Stellar Weave, the threads of magic that bind the planes of existence together. It is said that the Arcanum Celestis Grimoire was created by a coalition of ancient celestial beings and mortal archmages who sought to preserve their knowledge against the ravages of time.
The tome contains an infinite number of pages, allowing its user to inscribe spells without limit, making it the ultimate repository for a spellcaster’s knowledge. The spells inscribed in the book resonate with celestial energy, amplifying their power and precision.
Properties and Bonuses
- Infinite Repository:
- The grimoire has an unlimited number of pages for inscribing spells. Spells written in this book do not count toward the total number of spells the spellcaster can normally prepare.
- Celestial Empowerment:
- While attuned to the grimoire, the user gains the following benefits:
- +3 bonus to spell attack rolls.
- +3 bonus to spell save DCs.
- Advantage on saving throws against spells and other magical effects.
- While attuned to the grimoire, the user gains the following benefits:
- Starlit Wisdom:
- The grimoire grants proficiency in the Arcana skill, or doubles your proficiency bonus if you are already proficient.
- Light of the Heavens:
- As a bonus action, the user can emit a radiant light from the grimoire in a 30-foot radius for 10 minutes. This light counts as sunlight, dispels magical darkness, and grants all allies in the area temporary hit points equal to 2d10 + your spellcasting ability modifier. This ability can be used once per long rest.
- Plane-Touched Spellcasting:
- While attuned to the grimoire, you can prepare and cast the following celestial-themed spells without expending a spell slot:
- Lesser Restoration (2 charges)
- Guardian of Faith (4 charges)
- Wall of Light (5 charges)
- Crown of Stars (7 charges)
- The grimoire has 15 charges and regains 1d10 + 5 charges daily at dawn.
- While attuned to the grimoire, you can prepare and cast the following celestial-themed spells without expending a spell slot:
Spells Contained Within
The Arcanum Celestis Grimoire comes pre-inscribed with the following spells:
- Cantrips: Light, Sacred Flame, Guidance, Mage Hand
- 1st Level: Shield, Magic Missile, Detect Magic
- 2nd Level: Enhance Ability, Misty Step, Moonbeam
- 3rd Level: Counterspell, Daylight, Glyph of Warding
- 4th Level: Banishment, Arcane Eye, Greater Invisibility
- 5th Level: Wall of Force, Legend Lore, Dawn
- 6th Level: Sunbeam, Chain Lightning, Contingency
- 7th Level: Mordenkainen’s Magnificent Mansion, Plane Shift, Fire Storm
- 8th Level: Antimagic Field, Sunburst, Maze
- 9th Level: Gate, Wish, Prismatic Wall
These spells cannot be erased, but additional spells can be freely added by the user.
Lore and History
The Arcanum Celestis Grimoire is believed to have been created in the celestial planes, entrusted to a mortal archmage known only as Solivir the Radiant. Solivir was a champion of the balance between light and dark, using the grimoire to seal planar rifts and fend off incursions of aberrations and fiends. After Solivir's disappearance, the tome vanished, only to resurface sporadically across the ages, sought after by spellcasters for its limitless potential.
It is said that the grimoire contains more than just spells. Some pages whisper celestial secrets to the attuned user, while others show glimpses of distant planes or possible futures. Those who wield the Arcanum Celestis Grimoire must tread carefully, for its power is immense, but so too is the weight of its responsibility.
Legends tell of adventurers who have used its light to save entire worlds—and of those who have been consumed by their ambition, lost among the endless pages of arcane knowledge. Will you be the next to bear this celestial burden?
Notes: Bonus: Spell Attacks, Bonus: Spell Save DC, Advantage: Saving Throws, Twice Proficiency: Arcana, wizard or spellcaster with the Ritual Caster feat, Utility, enchantment
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