By consuming this essence you will recive severeal boons
*First you get to choose if you want to either create or use an already existing Alien race.
*If you choose to create a Alien race, then all it's characteristics will be up to you. that is to say how long they can live, how many genders there are, their powers and so on and so fort.
*You can be as detailed as you want too be, whether that is just one sentence or a whole paragraph is up to you.
*Once you have made your race you will have to determine where you stand in relation to your creation, maybe you at the absolute peak, or maybe you're just an average member or maybe just maybe you are the weakest. it's all up too you. (this is limited by the actual power and limits of your race, which means you cant make an average joe race and then say you're god)
*Optionally if you want some more work you can also design their society, their culture, tech level, social norms etc. you also get too decide where they exist and live, as well as how wide spread they are. yet again how detailed you are is up too you.
*Finally since you will probably want too be a part of you alien race´s society you're gonna have to decide on your position in said society, you can the god-king or just a lowly peasant its all up too you.
*If you decide to go for an already existing species then feel free too choose any alien race, with one limit
*The limit is as that they have to actually be an ALIEN race so you can't just choose elves or a race that is basically humans but in name.
*Once you have chosen you race, all you have too do is determine how powerful you are in relation to them. (this is limited by the actual power of said race, cant be god in a non god race
*Finally if you want too you can either go too the home world of your race and live there or you can bring them here, as a bonus you also get too choose you position on their society.