It has just been confirmed that you are the child of a god, with your newfound status as a demi-god, The Fates present you with a one-time choice to either accepting your divine nature or remain human.
If you accept your divine nature, the extent of both your powers and your lifespan will be dependent on the extent to which you are being worshiped. The longer you stay around a person, the more prone they are to worshipping you. Instead of mortal sustenance such as food, water, or air; you feed on the humans who worship you (your body slowly consumes the life force of people around you). The more you gain power (such as performing miracles, increased strength, speed, prolongued lifespan), the more your worshippers lose things like luck, extent of their happiness or even lifespan.
The choice between becoming a demi-god or remaining a human is an ireversible decision.