@ChrisPerkinsDnD In the PHB in mentions vulnerabilities and how they work, yet I don't know a single creature or race that has one?
— Harley Mathieson (@Clockworkable) September 12, 2016
Some game effects impose vulnerability to damage. Some monsters like the flumph have vulnerabilities. #WOTCstaff https://t.co/egdQzP4z7O
— (((Chris Perkins))) (@ChrisPerkinsDnD) September 12, 2016