Survivor
You are well-versed in surviving in hostile environments, even thriving where others are sure to perish. You gain the following benefits:
- You require only half of the food and water normally required for a creature of your size.
- You can withstand extreme temperatures indefinitely, and you automatically pass saving throws made against extreme heat and cold equal to your Constitution or Wisdom modifier, whichever is lower. After this time, you must make saving throws as normal until you long rest in a comfortable temperature.