Book of the Loremaster

Wondrous item, uncommon (requires attunement)

This digest-sized book contains a seemingly random collection of words, phrases, and strange mnemonic aids to help focus your aid and recall.

Each day when you complete a long rest, you can select one Intelligence-based skill in which you are proficient. You gain double your normal proficiency bonus with that skill. In addition, once per day you can consult the book of the loremaster for 1 minute, following which you can gain advantage on a single Intelligence check. You cannot use this ability again until you complete a long rest.