Survival & Environmental Rules

At the end of a 24-hour period without sleep, you must succeed on a DC 10 Constitution saving throw or suffer 2 levels of exhaustion.
For each additional 24 hours without sleep, increase the DC by 5 (DC 15, DC 20, etc.).
After a successful sleep, the DC resets to 10.

A character requires 1 pound of food per day to stay healthy.
A character can go 1 full day without food with no ill effects.
Eating half a pound of food grants advantage on the next Constitution saving throw against starvation (see below).

After the first day without food:

At the end of each additional day without a full pound of food, the character must succeed on a DC 15 Constitution saving throw or suffer 1 level of exhaustion.
Consuming a full day’s worth of food (1 pound) resets the starvation counter to zero.

Invisibility, Darkness, and Hiding

Hearing Radius:
- Each creature is assumed to have a 60 ft. hearing radius.
- A creature automatically knows the location of all creatures within that radius unless they are silent and hidden.
Attacking an Unseen Target:
- A creature in invisibility, magical darkness, or full darkness can still be attacked if within another creature’s hearing radius.
- Attacks follow the Attacking an Unseen Target rule (disadvantage on attack rolls).
- Spells or features that require seeing the target cannot be used.
Movement Through Darkness:
- Moving through magical darkness, full darkness, or while blinded counts as difficult terrain.
When Both Creatures Cannot See Each Other:
- RAW: The attacker has both advantage (target is unseen) and disadvantage (cannot see target), which cancel out.
- House Rule: Instead, both creatures have disadvantage on attack rolls against each other, representing mutual confusion.