Bloody Enhancement

Using the vial of blood, you enhance one of six abilities for the duration. 

Strength. All melee attacks you make automatically succeed and are critical. 
Dexterity. Your walking speed increases by 20 ft. and aren't affected by difficult terrain.
Constitution. You regain all your hit points and become resistant to all damage.
Intelligence. All spell attacks you make automatically succeed and are critical.
Wisdom. You are immune to the Blinded, Charmed, Deafened, and Frightened conditions and have advantage on saving throws against being Petrified.
Charisma. Every creature that can see you must make a Wisdom saving throw against your spell save DC or take 6d12 psychic damage and become frightened of you.