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VaultquakeHazard 11

Unique Complex Environmental 
Source Echoes in the Earth pg. 15
Complexity Complex
Stealth +0 to see the ley line energy retreating throughout the cavern
Description The retreating vaultline causes a series of cave-ins.
Disable DC 31 Arcana, Nature, Occultism, or Religion (master) to disperse the ley line’s power as it retreats, or DC 27 Survival (expert) to predict where rubble might fall next. The DC of the flat check for this round (see Routine) is increased by 4 on a success or by 8 on a critical success. Increasing the flat check DC to 21 or higher stabilizes the cavern, ending the hazard.
Disorienting Screech [reaction] (mental) Trigger The vaultline retreats. Effect Each creature in the area attempts a DC 30 Will save with the following effects. The hazard then rolls initiative.
SuccessThe creature is unaffected.
FailureThe creature is stunned 1 and stupefied 1 for 1 round.
Critical FailureThe creature is stunned 2 and stupefied 1 for an indefinite duration.

Routine (1 action) The GM rolls a DC 9 flat check to determine if a cave-in occurs. On a successful check, falling rubble deals 2d12+15 bludgeoning damage to a random PC (DC 30 basic Reflex save). On a critical success, the collapse deals 2d12+15 bludgeoning damage to all the PCs instead.
Reset After 4 rounds, the hazard ends automatically as the vaultquake subsides.

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