By drinking this fuzzy lemon lime tasting concoction your soul is symbiotically linked with a minor sex Deity.
*You may change your appearance, age, and gender as you wish starting off. With a body in perfect health and fitness.
*Your body runs off hentai/porn logic. STDs are no longer a concern, your genital can be as big as you want and not cause you any problems, people around you follow more of a porn logic than common sense, such as forcing a partner to orgasm multiple times will see them following in love with you, ect. This effect grows in strength in relation to your Deities' power.
*You may design your sex deity to appear to you as whatever you wish, gender, species, and basic personality and relationship to yourself.
*Comes with a physical object or item that serves as a connection to the physical world for your entity, and it produces sounds and communicate with you through this item.
*While it starts off weak, it may grant you a Boon to start. This Boon can come in many forms, perhaps granting a superpower, modifying or amplifying an existing power you have from another source, a magical item, a subtle wish such as a lewd law in the world, ext.
*In general, this starting Boon can be either be manifested at the strongest possible way the Entity can grant at this time or be granted at a weaker state but grows in power over time. For example, wishing to be a flying brick would make you strong enough to lift tanks and fly at moderate airplane speeds. A weaker gift would have you start at lifting ten tons and resistant to modern firearms but will eventually grow in power to true comic book top tier in level. The weaker an ability starts off, the more it can grow over time.
*By engaging in sexual acts and other forms of offerings, your Deity grows in power and what he can give you in the form of boons and miracles. Existing powers can be made stronger or remove limitations. Country perhaps even worldwide modification of society in lewd ways, ext.
*In general, the more of a significance a partner is in some way, whether a celebrity, leader, well known superhero, or perhaps even "the stories main character" the more favor and power it gives your Deity. Or by how tantalizing or erotic the "conquest" is, such as a family of a beautiful woman and her three equally beautiful daughters.
*At any time, your Deity and you can meet in an astral pocket, which is where your soul is bound to in case of death by the way. Here you can interact physically with the Deity but sex with him/her/it does not grant the Deity more power, although it may enjoy the act very much.
*Outside of sexual favors and methods, you could choose to title your Patron God of nearly any domain or concept and grow their power in a manner that makes sense for that patron god. Want a God of Battle that grows as you defeat more powerful/important foes? God of Games, Adventure, Death, ext. As long as the general guidelines of favor and boons are used nearly any concept is viable.
*The Deity can bring you back to life if killed, in either bringing you back at a safe place, or placing you back your body at an earlier time, ect.
*Resurrection is tiring for your Deity and unless it possesses a truly awesome amount of power will reduce their powers considerable, if they have to they can hold your soul to their charge enough, so in effect nothing can really kill you, if keep your soul in their pocket dimension for a while.
*Your Deity can also reincarnate you in this world or any other universe you can think of. Allowing a form of multiversal travel. In general, same rules apply as bringing you back to life, but they can always give you a starting Boon. You can pick exactly how and when you reincarnate, such as the general scenario your born in, what race, if you're the sibling of a specific person, ect.