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Archives of Nethys
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Archives of Nethys

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General Hazards | Adventure-Specific Hazards | Weather Hazards

Lapidarium Defense GridHazard 20

Complex Magical Trap 
Source A Name that Means Death pg. 152
Complexity Complex
Stealth +40 (master) to recognize the chamber as a deadly magical trap
Description The crystal lattices on the walls activate in turn, each projecting a hard-light grid of uniform, 6-inch-wide cells. The glowing grids then briskly sweep across the chamber in sequence, dicing organic matter they touch into precise cubes.
Disable Thievery DC 40 (master) or Arcana DC 37 (expert) to physically or magically sabotage one of the lattices. Deactivating or destroying all four lattices deactivates the hazard.
AC 45; Ref +30
Lattice Hardness 30, Lattice HP 110 (BT 55) per lattice; Immunities critical hits, precision damage, object immunities
Activate [reaction] Trigger A creature moves at least 10 feet into the room; Effect A transparent, hard-light barrier springs up across the lapidarium entrance. The barrier allows organic material to enter the area but not exit until the southernmost lattice is deactivated. The lattice on the west wall flares with light, and the hazard rolls initiative.
Routine (2 actions) On each of the hazard’s actions, a grid sweeps across the lapidarium in the following repeating sequence: west, north, east, south. A lattice that has been deactivated continues to use one of the trap’s actions when its turn in the sequence is reached, but it no longer generates a grid.
Sweep [one-action] A grid generated by a lattice on one side of the room moves 30 feet to the opposite side, striking everything in its path. Contact with the grid inflicts 16d8 force damage, with a DC 41 basic Reflex save. A character who makes a successful DC 39 Perception check to Seek after observing at least one Sweep notices that a 10-foot gap momentarily appears in each grid just before it reaches the pillar in the center of the room, making the two spaces adjacent to the pillar and facing toward the active lattice safe from each Sweep.
Reset The trap resets immediately once no living creatures occupy the lapidarium.
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