Drips of Goopligos

You learn to call on disgusting poison to serve your commands. You gain the following benefits:

• Increase your Intelligence or Charisma score by 1, to a maximum of 20.
• When you roll poison damage for a spell you cast, you can reroll any roll of 1 on the poison damage dice, but you must use the new roll, even if it is another 1.
• Whenever you cast a spell that deals poison damage, you can cause purple mist to surround you until the end of your next turn. The poison don’t harm you or your possessions, and smells rancid within 30ft of you. While the poison is present, any creature within 5 feet of you that hits you with a melee attack takes 1d4 poison damage.