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v0.25.0 · 27 October 2026

The Spellbook: pages, runes and the mentor

How the Spellbook works in The Ember Depths 0.25: page picks at levels 4, 9, 14 and 18, runes that change a skill, the class mentor and mastery bonuses.

Your seven core skills stay exactly as they are. On top of them, from level 4 you build a Spellbook: extra skills, called pages, that you choose. Each page has runes that change how it plays, so the same page can power very different builds.

Page picks

  • When. You pick a page at levels 4, 9, 14 and 18. Each pick offers up to 3 pages you don't own yet, and you take one.
  • How many. A class uses only as many picks as it can always fill with at least two real choices, so a class with fewer pages has fewer picks. A pick you haven't made yet waits for you on the hero sheet's Spellbook tab.
  • The mechanic. Your first page switches on your class's signature mechanic (the Classes Reborn page lists them all).
  • No book for hirelings. Sellswords don't get a Spellbook; the pages are for your heroes.

Runes

  • Every page has 2 or 3 runes, unlocking as the skill gains mastery ranks 2, 5 and 8.
  • Only one rune is active per page. Choose it on the hero sheet's Spellbook tab.
  • Runes change behaviour, not just numbers: a wider spiral, a burst where a hammer ends, a single boss-breaking blow, a heal for the whole party.

Page mastery

Page skills have no A/B mastery perks. Instead they gain a flat +30% power at mastery ranks 4 and 8, besides their runes.

The class mentor

  • A page you passed over can be bought from your class mentor for 30 gold × your level squared: 480 gold at level 4, 12,000 at level 20.
  • The mentor only sells while every pick still to come keeps at least two choices.
  • Changing class (possible only up to level 5) forgets your pages and refunds what you paid the mentor; the confirm dialog says so.

Every class's Spellbook

Pages and page picks per class
ClassPagesPage picks at
Fighter7levels 4, 9, 14 and 18
Barbarian7levels 4, 9, 14 and 18
Paladin7levels 4, 9, 14 and 18
Monk7levels 4, 9, 14 and 18
Dread Knight7levels 4, 9, 14 and 18
Rogue7levels 4, 9, 14 and 18
Ranger7levels 4, 9, 14 and 18
Bard7levels 4, 9, 14 and 18
Druid7levels 4, 9, 14 and 18
Wizard8levels 4, 9, 14 and 18
Sorcerer7levels 4, 9, 14 and 18
Cleric7levels 4, 9, 14 and 18
Warlock9levels 4, 9, 14 and 18
Necromancer9levels 4, 9, 14 and 18

See also