When Petal Stone withdrew, Onyx took a limped step back on her three hooves, her focus fixed on the one that displayed the bangle. The fur around it stood on end due to a small electrical shock, which symbolized the forging of the link between the two. She couldn't help but smirk. It always made her flare with excitement whenever she encountered a new sort of magic, and while the band didn't look like much, it wielded a power beyond most unicorns' capabilities. Not hers, of course, but most. So long as the world continues to produce such objects, my hunger for new magical knowledge will never be satiated. But it will make my life an interesting one- and if all goes as planned, I'll have all the time of eternity to discover more.
Planting her last hoof down, the mare shrugged at Petal's inquiry. "I have no schedule to keep, nor a place to stay within this town." She calmly stated. "I have an abode in the Crystal Empire." That no one knew about, of course. If anypony was aware of her little hideout beneath the library, there would be dire consequences. The place was filled with ancient artifacts and tomes of Dark Magic- the Crystal Ponies no doubt wanted absolutely nothing more to do with such. Not that anypony else really did either. "But I believe it would be wiser to practice my magic elsewhere." Even if it was of the Light, the power the amulet contained was enough to attract a lot of unwelcome attention.
Speaking of which.. "Now, then. The amulet- where are you keeping it?"