launches rock at Arianna

There was a tiny moment between one rock falling and the next and I dropped the shield. As the next rock began to fall, I stretched out my hand and my will, catching it before gravity could give it much velocity. Again I screamed, "Forzare!" and with an enormous effort of will I altered the course of the stone's fall, flinging it as hard as I could at Arianna, abetted by gravity and the remnants of her own magic.
She saw it coming, but not until it was too late. She lifted her hands, her fingers making warding gestures as she brought her own defensive magic to bear. The stone smashed through it in a flash of reddish light, and then struck her in the hip, spinning her about wildly and sending her to the ground.
"Harry Dresden, human catapult!" I screamed drunkenly.
Arianna was back on her feet again in an instant: Her shield had bled enough of the energy from the stone to prevent it from smashing into her with lethal force, but it had bought me enough time to get out of the pile of rocks around me and away from the stadium wall. I smashed at her with more fire, and she parried each shaft deftly, congealing water out of the air into wobbling spheres that intercepted the bolts of flame and exploded into concealing steam. By the fifth or sixth bolt, I couldn't see her with my physical eyes, but I did see energies in motion behind the steam as she pulled another dark sheath of veiling energy around her, and I saw her take off into an animal-swift sprint, again circling me to attack me from behind.


Changes Chapter 45, Page 479