Goblin Poison

History
Originally used for hunting, this poison is rather weak. Goblins coat their arrows in a dark black paste made from rotroot. Within moments, of entering a creatures blood steam, it will start to feel a burning pain spreading through it's body. When the races started attacking each other for territory, the goblins turned it into a weapon to use against their attackers. With enough liquids and rest, the effects can be cured within a few days, but there are other, faster acting methods of treating a creature. These come in the form of a very specific antidote known as Goblin Poison Antidote.

Ingredients

 * Water
 * Rotroot
 * Urine
 * Empty vial

Steps

 * Urinate in pot
 * Add rotroot
 * Boil rotroot in urine for 15 minutes
 * Remove rotroot and boil for another 10 minutes
 * Allow to cool down
 * Pour into vial
 * Wash pot with water

Game mechanics
Used as a weapon coating, a creature affected by the poison has disadvantage on attack rolls. A constitution save of DC 13 can be made when the creature is initially affected by the poison. If the creature fails it's save, it is affected by the poison for 1d4 days. After every long rest the user can repeat the save and on success, the effect ends.