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From Pathfinder #215: To Blot Out the Sun, which isn't enabled.

Silvered Retribution

COMPLEX HAZARD 9
Stealth +23 (master)
Description Pressure plates in the floor, wall, and ceiling of this hall trigger silver blades to protrude from the ceiling, slashing anything passing through the hall.

Disable DC 28 Thievery (master) to disable the pressure plates; two successes are required to disable the trap


Sudden Strikes
Trigger A creature steps on the floor or places pressure on the walls or ceiling of these two adjoining halls

Effect Silver blades erupt from the walls and wildly slash everything in the area, dealing 2d10+13 slashing damage (magic, silver) to all creatures in the area (DC 30 basic Reflex save). The trap then rolls initiative.
Routine (2 actions) The maze of blades continues to spin, jab, and slash, dealing 2d10+13 slashing damage (magic, silver) to all creatures in the area (DC 28 basic Reflex save).
Reset The trap deactivates after 1 minute and can be manually reset.
Pathfinder #215: To Blot Out the SunORC