Esoteric Endurance

Your form has been hardened by battle, experience, and experimentation. You are now able to use your form to intimidate foes and deal extra damage. When you take this feat you gain the following benefits:

• Your Constitution score increases by 2 but cannot exceed 20.
• You gain proficiency in the Intimidation skill.
• Once per short rest, as a part of your attack action you can expend one hit die to deal additional damage to an opponent. Roll the die, add your Constitution modifier, and deal damage equal to the total (minimum of 1).