Stage Fire
COMPLEX HAZARD 12 +28 Stealth DC is 0, Initiative modifier is +28
Flames engulf the opera house's stage.
DC 27 Survival to extinguish two adjacent squares of fire (with a critical success extinguishing four adjacent squares); any water spell (such as from Create Water or Hydraulic Push) cast at the fire extinguishes two squares automatically, or 2d4 adjacent squares if the caster of the spell achieves a DC 30 result with a spell attack roll; Quench instantly extinguishes all fire within its 20‑foot burst.
Erupt in Flame
When this encounter begins, the fire erupts in a ring that encircles the entire stage, as shown by the dotted outline on the map. The stage fire then rolls initiative.
On its turn, the stage fire expands inward and outward by 5 feet, filling all adjacent squares with fire. Creatures within these squares take 4d6 fire damage (DC 30 basic Reflex), as do any creatures that enter a burning square. This fire damage can be inflicted on a creature only once per turn.
In addition, a creature that ends its turn in a burning square takes 8d6 fire damage (DC 30 basic Reflex); on a failed save, that creature also takes 1d6 persistent fire damage.
Pathfinder #190: The ChoosingOGL