Biomancy - manipulation of the body

• bones
• muscles 
• organs

bleeding -  additional 1d6 damage every round that a bloody wound is not healed.

perfect body

Unarmed Strike - due to your increased muscle mass, you may add your constitution modifier to attack rolls and damage rolls of your unarmed strikes, this ability also grants you a 1d6 for the attack.

Removal of sense - at a number of times equal to your constitution modifier, you may restrict a sense from an individual, to do so, the individual must roll a DC x consitution save, on a fail, the caster can choose which sense to restrict, for up to 3 rounds.

Bone Manipulation - as an action, a number of times equal to your consititution modifier, you can touch a creature and manipulate their bones, either to damage their skeletal structure or to ruin their body's foundation. (damage - con save/ 8d6 piercing damage + bleeding)

Roids - as a bonus action you may add your constitution modifier to the attack rolls and damage rolls of one creature who uses physical attacks (1 round). 

Bone Blade - as a bonus action, you may turn your own bones into a sword, that you may attack with, it has a magical +1 to hit and damage, as well as being a 1d8+STR+CON for damage.

you missed - as a reaction you may shift your vital organs and skin to lessen the damage taken, take half damage from a single source once per turn.

Enter the description for how legendary actions work for your monster here.

Legendary Action Name (Costs # Actions). Enter the description for your legendary action.