During downtime between adventures, a character
can use the crafting rules in the Player's Handbook to
create basic poison if the character has proficiency with
a poisoner's kit At your discretion, the character can
craft other kinds of poison. Not all poison ingredients
are available for purchase, and tracking down certain
ingredients might form the basis of an entire adventure.
A character can instead attempt to harvest poison
from a poisonous creature, such as a snake, wyvern, or
carrion crawler. The creature must be incapacitated or