Mirror of Doom (5e Equipment)
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Wondrous Item, artifact (requires attunement)
The Mirror of Doom was wrought by the Umbral Queen ruling the Shadow Elves of Caer Sidi, a symbol of her malice and vanity.
The Mirror is crafted with a pewter handle and backing with intricate engraving, while the reflective surface seems to be a silvery metal that never burnishes or scratches, and all reflections appear dimmed and shadowy.
Shadow Crossing. Once per week, when on the Material Plane, the wielder may use the mirror to cause a doorway or other bounded portal whose reflection is held by the mirror to become a crossing to the Shadowfell, or if on the Shadowfell, the mirror may be used in similar fashion to create a crossing to the Material Plane. The precise location the portals lead to is determined by the DM.
Spells. When an attuned wielder of the mirror holds it before them with the reflective surface exposed, you can use an action to cast one of the following spells (save DC 18) from it: mirror image, phantasmal killer, project image, weird.
Once you use the mirror to cast a spell, you can't cast that spell again from it until the next sunset.