Phantom Pox Fluid (Ingested). This poison is created using materials that must be harvested from dead bodies that carry infectious plagues. 24 hours after a creature is subjected to this tasteless, sweet-smelling (ingested) poison, it must make a DC 17 Constitution saving throw. On a failure, the target takes 31 (9d6) poison damage, it gains one level of exhaustion, and its maximum hit points are reduced by the amount of damage that it took. On a success, it takes half as much damage and suffers no other effects. A creature with reduced maximum hit points repeats the saving throw with disadvantage at the end of each long rest, restoring its hit point maximum on a success. Any effect that removes a disease allows the creature’s hit point maximum to return to normal without requiring a successful saving throw. Creatures that are immune to disease are immune to this poison.

Ingested. A creature must swallow an entire dose of ingested poison to suffer its effects, which may be delayed by digestion time. The dose can be delivered in food or a liquid. The DM may decide that a partial dose has a reduced effect, such as advantage on the saving throw or dealing only half damage on a failed save.

Notes: Damage: Poison, Exhaustion, Damage, Debuff, Deception, Consumable