Self-Mutilator

You are fascinated by self-harm, but it's not the pain that pleasures you - rather, it's the horrific result on your own body.

Once per day, you can permanently remove a hit die from your maximum hit points, covering your body in scabs and scars. This process toughens the skin, and in return, you gain the following benefits:

• You gain a permanent +1 bonus to your AC, which counts as natural armor. You only benefit from natural armor when you are wearing no armor.
• You gain a permanent +1 to your Constitution score. This method can't raise your Constitution score beyond its maximum.