Poison Crafter

If you have proficiency with a poisoner’s kit, you can craft a variety of poisons. You can spend two hours to craft a poison, provided you have materials worth at least the cost per dose of the poison on the Poison Crafting table, which are consumed in the creation process.

Your knowledge of poison affects the finished product. When your crafted poison forces a creature to make a saving throw, the poison save DC = 8 + your proficiency bonus + your Intelligence modifier. When a creature takes poison damage from your crafted poison, it takes additional poison damage equal to your Intelligence modifier.