Soreth opened his mouth only to close it again with a look of confusion. "Uh...hold on, I don't even really think about it so much anymore..." He tapped a claw against the side of his jaw before pointing at the mirror. "Go touch the surface. It'll help you connect your energies. After that, you just need to clear your mind and focus. I know it sounds really simple and obvious, but that's the basic gist of it." 

Taking another bite of the sandwich, he stood up and walked to the side of the mirror. "This might be a little tricky, since I doubt that you've seen the dungeons yet. Normally, you'd have to spend some time and extra energy searching, but I can help with that. Here, just start the process and I'll give it a command to direct it."