Darkside Mirror 14
Complex Magical Mechanical Trap
Stealth: +24 (master) to notice it isn’t a regular mirror
Description: A magic mirror replaces characters with evil mirror duplicates from another dimension.
Disable: Thievery DC 34 (legendary) to retrieve a creature from the other dimension within 10 minutes of the switch (possible only if their mirror duplicate is dead), Thievery DC 39 (master) to permanently the mirror once all mirror duplicates are dead, or dispel magic (7th level; counteract DC 32) to counteract the mirror for 1 minute and prevent additional replacements during that time
AC: 34 Fort: 25 Ref: 20
Hardness: 1 Hp: 4 (BT 2), the mirror can’t be damaged while any mirror duplicate is alive
Reflection of Evil (arcane, conjuration, teleportation) Trigger: A non-evil creature is reflected in the mirror Effect: The mirror absorbs the creature into the mirror, replacing it with an evil mirror duplicate (DC 34 Reflex to avoid being absorbed into the mirror), and rolls initiative.
Reset: The mirror is always ready to absorb creatures into the other dimension. Ten minutes after a creature is sucked into the mirror, if an ally doesn't rescue the creature with Thievery, it reaches the other dimension, where it might be captured or killed. In the mirror dimension, it counts as a mirror duplicate, so the denizens of the other dimension can't destroy the mirror on their side while the absorbed creature is there. These dimensions are alternate realities, not planes, so even spells like plane shift can't reach them.
Source: Core Rulebook pg. 528 2.0