Greetings, Gamora. I am Loki of Asgard. I can and will aid you, at your convenience.
As for how, I am able to cast illusions with ease. It is nothing more than a spell woven over your person so that others will see you as a mundane human. Those which already know your visage will see through the illusion. You won't feel it after it is set in place.
I ask for only half a day to gather supplies to create a bottled mist that you may wish to carry on your person, should the illusion fade for some unforeseen reason. That should afford you ample time to seek me out.