Ethereal Library of Ioun

You take the time to reach out to the mystical, legendary library of the seeing mistress. While casting this spell you enter a trance that lasts 10 minutes and cannot be interrupted by any outside stimuli other than damage forcing a concentration check. During this trance your conciousness is transported to the realm of Ioun. This library contains knowledge on all worlds of the Forgotten Realms, including those your campaign may not be a part of, and looks as such. The library is an astral like sea of shelves and shelves of books. Time in this space moves at the ratio of 1 minute in the real world = one day from the caster's perspective in this trance.

You may ask 3 questions while in this plane of existence. You will be teleported to the right area in the library containing all pertinent information regarding the subject you asked about in the form of easily understandable but ridiculously detailed books. How much secrets the caster can uncover from investigating that area of the library is up to the DM's discretion. A simple question might have one answer and as such requires no check, they simply find the answer they're seeking, perhaps represented by a single note peaking out from a book. Information on a broad topic may require a check of some sort like an Intelligence (Investigation, Arcana, or History) check to find, decipher, or understand the knowledge held here in a useful way.

Once either the 3 questions are up or the DM thinks it's been long enough, the caster's conciousness is transported back to their body with the knowledge they uncovered. Physical objects from the library cannot be taken with the caster. If the caster is taken out of the trance early via failing concentration or counterspell, the caster doesn't retain any knowledge they gained during the spell and is forced back into their body. Upon the successful completion of this spell, the spell cannot be used again for a month.