Prison of Blades CR 16
Type magic; Perception DC 35; Disable Device DC 35
Trigger visual (true seeing); Reset automatic (5 minutes)
Effect spell effects (forcecage, windowless cell, DC 20 Reflex save or be trapped inside for 13 rounds), two mage’s sword spells shaped to look like ranseurs attack anyone inside the cage for 13 rounds (Atk +19 melee [4d6+3/19–20]); multiple targets (all targets in a 10-ft. cube)
Pathfinder Campaign Setting: Dungeons of Golarion. © 2011, Paizo Publishing, LLC. Authors: Jason Bulmahn, Matthew Goodall, Brandon Hodge, Anthony Pryor, and Mike Shel.