By consuming this Essence you begin to tap into an exalted force, a fundamental level of existence that raises you from mere flesh and blood to a sort of idealized embodiment of action and capability.
*The first thing this Essence does is purge all weaknesses. Regardless of your prior condition you gain a strong healthy body of your ideal appearance.
*You are exceptionally resistant to environmental hardships and illness, you can survive on a vastly reduced amount of sustenance or sleep - although you still need some - and you do not age past the prime of life (save possibly cosmetically, if you so choose) and will revert to the prime of life if already beyond that age.
*You can perform any action that you have the capability to do with ease and grace. So long as you have the mental focus and ability to take any action at all, even for just a moment, you can keep acting without any regard for physical or mental endurance. Supernatural limitations such as a finite mana pool or whatever still apply.
*You possess miraculous aptitude and inherent mastery for any action you could attempt without other supernatural powers. Even without training you would already have skill and knowledge equal to a truly amazing athlete, scientist, artist, warrior, scholar, or other professional in any such field, and specialized training or study only enhances this further.
*In addition, your every action has this extra something of flawlessness and cinematic competence. You have perfect balance, perfect execution unless your attempt is actively interfered with, and perfect timing. Any action you attempt is completed in the earliest of the following timespans that seems even vaguely plausible under the circumstances; practically instantly, at just the right time, or just barely in the nick of time.
*On top of your preternatural skills and execution, your raw physical and mental ability is raised to superhuman levels. You have strength like a bear's, speed like a striking snake's, a mind like a living computer, senses enhanced as if by machinery, and all the rest of it. Even if your mundane power already exceeded human limits - i.e., if you already were a bear or suchlike - you'd still at least double your strength and/or potence from this Essence.
*Lastly, you gain total conscious control over your body and mind - every muscle, every sinew, every tiny little portion. Your body becomes supernaturally light and agile, and you can practically run on top of grass or balance on a thread. Your mind becomes equally precise, effortless, and controlled. Thinking is always fun and easy, and you can do things like perfectly index and reorganize your memories, actively practice rationality, consciously regulate your emotions, build and model independent perspectives in your head, think coherently about many things at once, etc.