Sigilian Star Charts

#wondrous-item #legendary (requires attunement by a spellcaster)

One of the greatest treasures to have come from the legendary city of Sigil, these charts are thought to have belonged to the Lady of Pain, herself, before they were stolen away during the Faction War. This stellar atlas possesses the following properties:

While holding these charts, you know the banishment, demiplane, plane shift, and teleport spells.
The maps will always show the current layout of the multiverse and planes, updating every day at dawn. While holding them, you can make a DC 25 Intelligence (Investigation) check to try and locate any world or plane in existence as long as you know the location's name or ruling entity. If you fail this check, you suffer 1 level of exhaustion and the charts cannot be read again until the next dawn.
If you use this item to discover the location of a plane while holding these maps, you do not need to possess a forked rod attuned to that plane to travel there with the plane shift spell for 24 hours.