Demon Bile

Demon’s bile is biological in nature, and if left in an open area unchecked, even a small amount of it can begin growing. Demon’s bile that covers an area begins growing in earnest, expanding at a rate of about 5 feet per day.

Demon’s bile attracts vermin, and those that wallow in it (as well as some other creatures exposed to it) often grow in size, and gain fiendish abilities.

Additionally, demon’s bile that covers a 10-foot-by-10-foot area or greater has a chance to spew forth fiendish vermin every few days.

Any good-aligned damage, damage from cold iron weapons, or radiant energy damage destroys it.

Additionally, anyone who ingests demon’s bile must make a Constitution Save DC 14 or begin hearing buzzing sounds which eventually drive them mad, taking 1 Wisdom damage until the disease is cured or has run its course.. At the end of each long rest, the infected creature may make another save, losing another point of Wisdom on a failed save. For every 2 points of Wisdom lost, the infected creature's alignment shifts closer to Chaotic Evil. If the infected creature becomes Chaotic Evil, they gain the following flaw.
"I will work to increase the influence of the Abyss and its Demon Lords."

Treatment

If the infected target makes two consecutive constitution saving throws, they are cured of the Demon Bile. Any changes in alignment will remain with the creature, but Wisdom is restored at the rate of 1 point per long rest.

Type

Supernatural

Rarity

Rare