Serpent Venom

Adventuring gear, poison (injury)

• Properties: Poison
• Cost: 200 gp

This poison must be harvested from a dead or incapacitated giant poisonous snake. A creature subjected to this poison must succeed on a DC 11 Constitution saving throw, taking 10 (3d6) poison damage on a failed save, or half as much damage on a successful one.

Source: Dungeon Master’s Guide p. 258. Available in the SRD