By drinking this Essence you get the following benefits:
*You become the living embodiment of the Xeelee, masters of all baryonic matter.
*You instantly gain all the knowledge of the Xeelee, across their infinite timelines, going back to a few seconds after the Big Bang.
*You immediately gain all the capabilities of a Xeelee nightfighter, the basic Xeelee spacecraft. Vastly more intelligent than an Earth computer, capable of traveling at .5c sublight, to crossing the universe with amazing speed or even traveling back in time with hyperdrive hops (and thus cloning yourself). You can take a point-blank explosion greater than all the energy the Sun has ever outputted and only be mildly inconvenienced.
*(Acausal) Time travel is second nature to you, you can go as far back as a few millennia after the Big Bang and you can pass information to your past selves (who you can merge with) at will, changing the future. You can even create time loops or go back and engineer your own species' evolution.
*If you want, you can also choose to shape a new body made of Xeelee Construction Material; nigh-invulnerable material immune to all electromagnetic radiation and capable of converting energy (even sunlight) to more of itself to heal in a 100% efficient conversion. Your body-and your body alone- loses the weakness that XCM has to other weapons. You can still maintain a human appearance if you want, but you are far beyond human in reality.
*You can create more XCM with the same speed as a Xeelee flower by just willing it. Or, with more effort, bud off Xeelee flowers that do the conversion for you.
*You can also create an Anti-Xeelee, a lifeform that travels backwards in time, and guarantees that your projects and time loops won't be interfered with even if you jump ahead or into another universe.
*If you want, you can start with a set of "Sugar Lumps": ships containing Xeelee who travel backwards in time or to new universes to shape how the universe and their species evolved. They will consider you their leader and follow your lead in all things.
*All major Xeelee construction projects are available to you. You can create a vastly smaller version of Bolder's Ring, which allows you to travel to alternate universes.
*You gain the ability to destroy dark matter and dark matter entities. At first only within range of a single hyperdrive hop, but you can eventually build weapons to do it across a universe. You can dial this to only affect specific dark matter organisms.
*You gain a natural facility with black holes, which function as Xeelee habitats and factories.
*You're much better at recognizing that the other, more primitive baryonic species are sentient than the canonical Xeelee.