Medusa - Stage 2 (Self Lapification)

Boons:

• Self Lapification: As a reaction when you take damage, you temporarily transform the outer layer of your skin to stone. You gain 25 temporary hit points per transformation level, which take as much of the triggering damage as possible. After you take the damage, you gain resistance to all forms of damage and you gain immunity to psychic and poison damage when you are still lapidified. Your speed is reduced to 0, and you are Petrified. All these effects end when you lose all temporary hit points or when you choose to end this feature at the start of any subsequent turn.
  
  You can take this reaction once every long rest.

 Flaw:

• Hideous Appearance: Your true form is hideous, whether due to your connection to curses or your tenuous ties to other realities.
  
  Although your appearance isn't necessarily scary, your form seems unnatural to normal creatures. Regardless of your true form, you are horrific to behold. You can suspend this form and manifest the appearance of the creature you once were, but this is taxing and requires concentration. This form is not permanent, and moments of stress are likely to reveal your true nature Your true form may be revealed in the following situations:
  • Becoming Bloodied
  • Concentrating on a spell
  • Gaining the Unconscious condition
  • Entering hallowed ground
  • Choosing to reveal yourself.
  In these events, or times of other extreme emotional or physical stress, a GM can call for a Constitution Saving Throw with a DC based on your current Transformation Stage:
  Stage 1: DC 10
  Stage 2: DC 13
  Stage 3: DC 16
  Stage 4: DC 20