anything within the realms of laws of physics. So things like attracting money or love, shutting up rumors are real, but werewolves, invisibility, or flying aren't real.
Now as to this rumor of flying. Is flying, without mundane help, possible? Yes and no. Your physical body cannot zoom through the air without some help, but you can go on to studying AP or astral projection which from what I read basically equates.
Invisibility? Also, a rumor, but you can focus an energy of 'camouflage' about you in a similar manner to psychic shielding.This won't stop cameras from catching you though. Also, people won't not see you. It'll be like they just gaze over you.
Most of these things will become apparent and obvious with study and working. I suggest thinking could this happen without magic? You can move beyond this with experience. No I do not mean that the impossible becomes possible.