By drinking the essence of the black hole you gain several abilities:
*You gain the ability to instantly break apart any matter that touches you down to the subatomic scale and absorb it. By absorbing matter you can increase your mass, durability, strength, size and all other abilities you obtained from this essence. You can reduce your size and mass at will if you wish.
*You gain fully control over your gravitational field changing its strength and range at will, your gravitational field will grow in power and range until you become a universe level destroyer.
*Together with your gravity field you will gain the ability to generate a field that can decrease the flow time around you.
*Once you reach enough mass you gain the ability to fire a relativistic jet, a beam of ionic matter at the speed of light that have a effectively infinite range.
*You body become immune to the passage of time with your never aging or becoming ill, your mind is also improved giving you effective infinite memory and instantaneous recall. You senses also doesn't work as before allowing you to 'see' without light and 'hear' without air.