Blackdamp is a corrosive gas that often collects deep in mines
Blackdamp exposure will be noticed immediately.
Breathing will become hard and all exhaustion checks are made at disadvantage
The effects of blackdamp exposure vary based on the severity
The exposed individual must make a Con save each round or gain a temporary level of exhaustion and the poisoned condition.
Blackdamp poisoning will inflict x necrotic damage for the next x rounds.
In addition blackdamp causes extremely coughing fits, making communication difficult, imposing disadvantage on most ability checks and preventing any spellcasting that requires a verbal component.
Recovery from Blackdamp
- Potion of Dark Air will prevent the development of the condition, though it will not remove the poisoned effect once it is inflicted
- Lesser Restoration will remove the poisoned condition but not prevent it from being reacquired