Wondrous Item, Very Rare

This map has been used to plan numerous break-ins in places considered impenetrable. By placing this large sheet of parchment on top of another, you can use an action to speak its command word and copy the contents of a scroll onto it. If you copy a page while another is already stored, the previous one disappears to make room for the new one.

As a bonus action, you can use a different command word to temporarily erase the writings, creating the illusion that it is a blank scroll.