Thieves & Kings
Serpent Venom is a natural poison, harvested from a dead or otherwise incapacitated giant poisonous snake, and is commonly encountered among assassins, due to its relative ease in acquisition among black markets. It’s color is almost always a “bile green”, and this color tends to give away the fact any weapons coated with serpent poison are so equipped.
Effects : As an injury poison, any creature that takes slashing or piercing damage from an envenomed weapon or piece of ammunition is exposed to its effects. A creature subjected to this poison must succeed on a DC 11 Constitution (Poison) saving throw, taking 10 (3d6) Poison damage on a failed saving throw, or half as much on a successful one.
This poison may be harvested and purified to create a single Serpent Poison dose, provided the character has proficiency with a Poisoner’s Kit, but they also grant their bonus to any check to extract the poison; one must also have access to a giant snake or other poisonous serpent in order to attempt the harvesting. If the creature is either dead or otherwise incapacitated, harvesting requires d6 minutes followed by a DC 20 Intelligence (Nature) check to succeed. On a failed check, the attempt does not succeed. On a failed check by DC 5 or more, the character is subjected to the poison’s effects.
The poison has a market value of roughly 2000 sp, per dose.