From Pathfinder Society Special #3-98: Expedition Into Pallid Peril, which isn't enabled.

Enhanced Brown Mold

HAZARD 4

ENVIRONMENTAL FUNGUS

Stealth +15 (trained)

Description This unassuming fungus leeches heat out of the air.

Disable DC 22 Survival (trained) to safely remove the mold

AC 21; Fort +14, Ref +8

HP 46 (BT 23); Immunities critical hits, fire, precision; Weaknesses cold 15

Emit Cold (aura, cold)

5 feet. Enhanced brown mold deals 1d10+6 cold damage to nearby creatures.

Leech Warmth

Trigger Fire comes within 5 feet of the brown mold.

Effect The brown mold expands into every square adjacent to its space. As it grows, it pulls more heat from its surroundings, dealing 2d10+13 cold damage (DC 21 basic Fortitude save) to creatures within 10 feet after it expands.

Reset After expanding, the brown mold can't grow again for 1 day.

Pathfinder Society Special #3-98: Expedition Into Pallid PerilOGL