Eusebio's Mind Palace

You enter a medatative state and form a dreamlike area in your mind where one second on the outside is one hour on the inside, you can bring up to three willing creatures with you. While inside creatures have advantage on all Investigation and Insight checks. If you take damage while concentrating on this spell there is no check and the spell automatically ends. The inside of the palace resembles a library of all your memories and a comfortable wooden table with four chairs.