Extreme Cold

HazardXDMGp. 682024

When the temperature is 0 degrees Fahrenheit or lower, a creature exposed to the extreme cold must succeed on a DC 10 Constitution saving throw at the end of each hour or gain 1 Exhaustion level. Creatures that have Resistance or Immunity to Cold damage automatically succeed on the save.

Raw data

{
  "name": "Extreme Cold",
  "page": 68,
  "__prop": "hazard",
  "source": "XDMG",
  "entries": [
    "When the temperature is 0 degrees Fahrenheit or lower, a creature exposed to the extreme cold must succeed on a {@dc 10} Constitution saving throw at the end of each hour or gain 1 {@condition Exhaustion|XPHB} level. Creatures that have {@variantrule Resistance|XPHB} or {@variantrule Immunity|XPHB} to Cold damage automatically succeed on the save."
  ],
  "trapHazType": "ENV"
}