Doppelganger. When this 3-foot-diameter mirror weighs 40 pounds. If the mirror is hanging on a vertical surface and you are within 5 feet of it, you can look into the mirror and take an action to speak the command word to activate it. When you do so, the mirror creates the effects of the simulacrum spell with you as the replicated target. The simulacrum is an NPC under the GM’s control that must follow your commands to the best of its ability, but it strives to twist your commands to bring you misery. The simulacrum preferably does so subtly or in secret. When the simulacrum is reduced to 0 hit points or after 1 hour, it disintegrates into ash and embers. Once the mirror is used to create the simulacrum, it can’t be used in that way until 10 days have passed.

Curse. This mirror is cursed. Using this mirror curses you until you are targeted by a remove curse spell or similar magic. While cursed and the mirror’s ability is available to use, you must succeed on a DC 15 Wisdom saving throw or activate it. On a success, you become immune to the urge for 24 hours. After the 6th time you have used this mirror, the simulacrum is no longer forced to obey your commands, but it usually does so to keep up the facade.