Bracelets - Magnetic

He realized the "roadside mystic" hadn't sold him a trinket; they had sold him a key. Now that he had unlocked the door to the Earth’s magnetosphere, something on the other side was pulling back. If you’d like to see where this leads, tell me:

The (a rival magnet-user, a sentient field, or a government agency) MAGNETIC BRACELETS

As the machine’s magnets ramped up, the bracelet didn't just pull; it vibrated with a frequency that bypassed his skin and resonated in his marrow. A blinding flash of violet light filled his vision. When the technician pulled the bed out, the room was empty. He realized the "roadside mystic" hadn't sold him