The Librarian

Only Choose this Subclass if starting at Level 3 +

You have made a pact with an enigmatic being that collects knowledge above all else. Whether it is a dragon with an unusual hoard, a fiendish purveyor of dark secrets, or the second face of a god of knowledge, your patron desires to know everything — and maybe, so do you. Your pact grants you the chance to learn far beyond your mortal scope, and as long as you seek what your patron does not yet know, such knowledge will remain within your reach.

Level 3: Expanded Spell List

The magic of your patron ensures you always have certain spells ready; when you reach a Warlock level specified in the Librarian Spells table, you thereafter always have the listed spells prepared.

Warlock Level	Spells
3rd	Detect Magic, Identify, Detect Thoughts, Silence
5th	Detect Past, Speak With Dead
7th	Arcane Eye, Divination
9th	Legend Lore, Skill Empowerment

Level 3: Sworn Scholar

You can choose to use Intelligence, instead of Charisma, as your warlock spellcasting ability. If you choose to use Intelligence, all warlock features and Eldritch Invocations that reference your Charisma modifier use your Intelligence modifier instead. You must make this choice when you gain this feature. In addition, you learn one language of your choice and become proficient in your choice of two of the following skills: Arcana, History, Nature, or Religion.

Level 3: Meticulous Chronicling

You create a grimoire of all knowledge with your patron’s guidance. The grimoire weighs 10 lbs and its contents shift depending on the topic you choose to research when opening it.

When you finish a rest during which you spent at least 1 hour consulting your grimoire, you can choose any one language and one skill. Until you consult the grimoire again, you can speak, read, and write the chosen language and are proficient in the chosen skill.

Additionally, the grimoire contains a wealth of information regarding the process of scribing scrolls. While you have possession of your grimoire, you can create spell scrolls in half the time and at half the cost. In addition, you can create a spell scroll for any spell that is of a level you can cast with your pact magic spell slots, even if you don’t know it and the spell isn’t on the warlock spell list. You can cast any spell from a spell scroll as if it were on the warlock spell list.

If your grimoire is destroyed or lost, you can replace it with 8 hours of writing and 25 gp worth of paper and magical inks. When you do, your old grimoire turns to dust.

Level 6: Librarian’s Favor

Your patron’s favor allows you to navigate the hallowed silence of halls of knowledge. You gain resistance to thunder damage and can ignore the verbal components of spells you cast.

Level 10: Voracious Learner

Your proficiency bonus is doubled for any ability check you make using the skills you gained proficiency in with your Sworn Scholar and Meticulous Chronicling features.

In addition, you can read all written languages. When you read a book, scroll, or other text that would normally take you longer than 1 hour to read completely, it only takes you 1 hour to read it completely.

Level 14: Thirst for Knowledge

You can snatch magic out of the air and add it to your personal library. When a creature you can see within 60 feet casts a spell, you can use your reaction to interrupt it. If the spell is 5th level or lower, the spell fails and you immediately scribe a spell scroll containing the spell. If the spell is 6th level or higher, make an ability check using your spellcasting ability. The DC equals 10 + the spell’s level. On a success, the spell fails and has no effect.

Once you use this feature, you can’t do so again until you finish a long rest, unless you expend a use of one of your arcanum spells to use this feature again.