Mark of Tiamat's Champion

Your soul belongs to Tiamat, as your physical form embodies Her chromatic draconic essence. Patches of your scales now have different chromatic colors: red, white, black, blue, and green. You receive the following effects:

• You have grown a second, small draconic head on your shoulder. This gruesome growth is one of the five chromatic colors of Tiamat, but a different color from your original scales. It has its own personality and occasionally whispers telepathically into your mind. It is a chaotic evil entity with an Intelligence of 16, a Wisdom of 13, and a Charisma of 18, and it shares your hit points. It has hearing and darkvision up to 120 feet. While you have this feat, you gain the following flaw: "Sometimes cruelty is necessary, and sometimes it can even be its own reward."
• You gain a flying speed of 30 feet with your new dragon-like wings.
• Your savage draconic visage is unsettling to others, imposing disadvantage on Persuasion and Deception checks.
• When you use your Breath Weapon, you can choose for it to originate from your original essence or embrace the chaos of Tiamat. If you embrace the chaos, roll on the Breath Weapon table below to determine the damage type:
  

  D6	Damage Type
  1	Acid
  2	Lightning
  3	Fire
  4	Cold
  5	Poison
  6	Necrotic