New power source

Mouse said, again in what sounded like perfectly clear English, "Funny. Now restore them."
Lea turned to look at the big dog and said, "Do you dare to give me commands, hound?"
"Not your hound," Mouse said. I didn't know how he was doing it. His mouth wasn't moving or anything. "Restore them before I rip your ass off. Literally rip it off."
The Leanansidhe tilted her head back and let out a low laugh. "You are far from your sources of power here, my dear demon."
"I live with a wizard. I cheat." He took a step toward her and his lips peeled up from his fangs in unmistakable hostility. "You want to restore them? Or do I kill you and get them back that way?"
Lea narrowed her eyes. Then she said, "You're bluffing."
One of the big dog's huge, clawed paws dug at the ground, as if bracing him for a leap, and his growl seemed to . . . I looked down and checked. It didn't seem to shake the ground. The ground was actually shaking for several feet in every direction of the dog. Motes of blue light began to fall from his jaws, thickly enough that it looked quite a bit like he was foaming at the mouth. "Try me."
The Leanansidhe shook her head slowly. Then she said, "How did Dresden ever win you?"
"He didn't," Mouse said. "I won him."
Lea arched an eyebrow as if baffled. Then she shrugged and said, "We have a quest to complete. This bickering does not profit us." She turned to us, passed a hand through the air in our general direction, and murmured, "Anytime you want it back, dears, just ask. You'd all make gorgeous hounds."


Changes Chapter 41, Page 435-436