Tiamat's Malice

You manifest scales and claws reminiscent of your draconic ancestors. You gain the following benefits:

• Increase your Strength, Constitution, or Charisma score by 1, to a maximum of 20.
• Your scales harden. While you aren’t wearing armor, you can calculate your AC as 13 + your Dexterity modifier. You can use a shield and still gain this benefit.
• You have advantage on Intimidation checks, you can do this a number of times equal to your proficiency bonus per long rest.