Primeval Thule: Bearer of the Black Book Background for D&D 5th Edition

I'm a HUGE fan of Primeval Thule by Sasquatch Game Studio!

Backgrounds here are based on the Narratives in Primeval Thule, so they will gain abilities as a character levels.  I've made the decision to treat them as backgrounds because they fill a similar niche as 5E's backgrounds, but allow abilities to be gained as you level to reflect the high action and deep peril of the setting.

Also, some of the abilities require the expenditure of a resource, for this reason and for how dangerous the setting is, each character gains the Lucky Feat for free and may take the Lucky Feat one additional time.

Bearer of the Black Book  

Skill Proficiencies (1st level): You are Proficient in Arcana, History, and Religion.

Langauges (1st level): Common and any three.

Tools Proficiencies (1st level): Quill and ink and astrolabe.

Remembrance (1st level):  As an action, spend a Luck point and can consult the Black Book to regain the use of a spell you cast in the previous round. The spell must be at least one level lower than the highest-level spell you can cast.

Ritual Insight (6th level): The Black Book can act as a focus and material component for any divination spell. The book is not consumed when used as a material component in this way.
Optionally, this is a feat and can only be taken if you have this background and are at least 4th level, also gain +1 Wisdom.

Secret Legend (10th level): Once per day, you can cast legend lore for free (no component or focus cost) by simply consulting the book.
Optionally, this is a feat and can only be taken if you have this background and are at least 8th level, also gain +1 Intelligence.