Mimir 5e
Wonderous item, Rare (Requires Attunment)
The skull-shaped device is filled with knowledge. The device weighs 5 pounds and is covered with subtle etchings of planar sigils.
As a bonus action, you can toss the device into the air, whereupon it floats at a distance of 1d3 feet from you and you can access its properties. While the mimir is floating, a creature other than you can use an action to grasp or net the device, either by making a successful unarmed strike against AC 22 or a successful DC 22 Dexterity (Acrobatics) check. You can use a bonus action to seize and stow the device.
The device has AC 22, 25 hit points, immunity to poison and psychic damage, and resistance to all other damage. It is considered an object that is being worn while it is floating near you.
Esoteric Knowledge. While the device is floating, you can use an action to cast Legend Lore from the device. The device speaks the revealed lore aloud. Once this property has been used, it can’t be used until the next dawn.
Planar Knowledge. The device knows the basic, useful information about the planes existence. While the device is floating, it verbally answers questions you or anyone you designate poses to it about that topic. It knows the information about the planes in the Dungeon Master’s Guide, as well as the basic information about the gate-towns of the Outlands (presented in chapter 3 of this book (Sigil and the Outlands)).
Commentary by Sam West, Twitter: @CrierKobold
If you’re new in Sigil and feel completely out of your depth, fear not. There is a helpful guide you can seek out to get ou all the information you could ever need about this wacky world of multiverse travel and bizarre cosmology: a Mimir!
Activating or deactivating the skull is done as a bonus action, making it quick and easy to break out in combat when you need to know where this strange looking portal goes to before jumping into it!
Legend Lore cast with this skull doesn’t require any components to use, meaning you aren’t expected to shell out 250 gold for the fun facts about legendary figures!
There is a robust amount of information out there about the planes; the exact limitations to this lock it to the DMG and Sigil and the Outlands, but you’re DM likely will also stack it with any other information they need to communicate to you about their version of these places.
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