Bright Mirror Trap
In a dark room, a frame on the wall contains a mirror. When dim light falls on the metal, it begins to glow.
When bright light falls on the mirror, a Failure is triggered.
Exploration. While in dim light , the mirror’s glow correlates to the amount of light that falls upon it. A creature that makes an Arcana or History check recalls that dangerous energy imbalances are sometimes associated with such glowing mirrors.
Magical Effect. This is a magical effect created by evocation magic. Casting dispel magic on the mirror requires a spellcasting ability check and triggers a Success.
Mirror. Turning the mirror towards the wall or covering it with an opaque object such as a cloth prevents light from falling on it. The mirror is a 600-pound object with AC 10 and 1 hit point. Breaking it triggers a Critical Failure. Using a second mirror to reflect the metal’s light back at it also destroys the mirror without triggering a Critical Failure.
- A creature can make a Strength check to remove the mirror from the wall and set it down without breaking it.
Potential Outcomes
Critical Failure. As Failure, but it creates a 60-foot sphere of burning light centered on the mirror.
Failure. A 30-foot cone of burning light shines from the metal. Each creature in the area makes a Constitution saving throw , taking 24 (7d6) radiant damage on a failed save or half damage on a success. The trap is then disabled for 24 hours.
Success or Critical Success. The trap is permanently disabled.