Minuscule parasites known as throat leeches infect the water in Chult's forests, swamps, and rivers. Any giant or humanoid that swallows tainted water must succeed on a DC 12 Constitution saving throw or be infested with throat leeches. Immediate symptoms include throat inflammation and shortness of breath. After hours, the infected character gains 1 level of that can't be removed (except as described below) until the disease is cured. At the end of each long rest, the infected creature must repeat the saving throw. On a failed save, the creature's increases by 1 level; on a successful save, the creature's decreases by 1 level. If a successful saving throw reduces the infected creature's level of below 1, the creature recovers from the disease.
Throat Leeches
Condition
Status Effect
Throat Leeches
This condition changes how a creature can act, move, perceive, or interact with the world until the condition ends.
Rules
2
sections
Effects
Explorers can avoid contracting throat leeches by drinking only rainwater or water that's been boiled or magically purified.