A creature can hold its breath for a number of minutes equal to 1 + itsConstitution modifier (minimum of 30 seconds).
When a creature runs out of breath or is choking, it can survive for anumber of rounds equal to its Constitution modifier (minimum of 1round). At the start of its next turn, it drops to 0 hit points and isdying, and it can't regain hit points or be stabilized until it canbreathe again.
For example, a creature with a Constitution of 14 can hold its breathfor 3 minutes. If it starts suffocating, it has 2 rounds to reach airbefore it drops to 0 hit points.
More Rules
Explore other rules in the same category
Falling
A fall from a great height is one of the most common hazards facing anadventurer. At the end of a …
Vision and Light
The most fundamental tasks of adventuring---noticing danger, finding hidden objects, hitting an enemy in combat, and targeting a spell, toname …
Blindsight
A creature with blindsight can perceive its surroundings without relyingon sight, within a specific radius. Creatures without eyes, such asoozes, …
Blindsight
Many creatures in fantasy gaming worlds, especially those that dwell underground, have darkvision. Within a specified range, a creature withdarkvision …
Truesight
A creature with truesight can, out to a specific range, see in normal and magical darkness, see invisible creatures and …