The developers have elaborated on this a little bit in some of the Q&A sessions they have done. At this point, they're planning on implementing a system they call "talents," which will (based on a random % chance) assign certain characters dormant supernatural abilities during character creation.
The player won't know their character has the ability to unlock this power, and in many cases may go their entire life without realizing their character had access to a talent. However, if they happen to trigger some special condition that awakens the talent (which may vary depending on which talent it is,) their character will then be able to develop and make use of the power they were randomly assigned at birth.
You can read a little more about it here on the CoE Wiki; obviously the game is in early development right now and many things are subject to change and tweaking, but so far, that's what we know about how talents are supposed to work.