magnetism vs mavra

But we were. The carnage had evidently drawn Mavra's attention, and she stared at the blood, withered lips pulled back from yellow teeth. She looked at me, and her expression twisted in malice. She spun back to Lydia, sword held high.
"Michael," I snapped, and stretched out my cane. "Venteferro!"
Amoracchius burst into conflicting shades of blue and golden light, as my power wrapped around it, a coruscation of sparks that made Mavra howl in surprise and pain. The vampire retreated, but kept her pale hands clenched on the blade.
"Suit yourself, sparky," I muttered. I gritted my teeth as the cane smoked and shook in my hand. "Vente! Venteferro!" I whipped the cane in a wide arc, and with a hiss the vampire found herself lifted clear of the ground by her grip on the sword, and flung like a beach ball toward the courtyard below. She smacked into the stones of the courtyard hard, brittle popping sounds a gruesome accompaniment. The sword exploded in another cloud of vengeful argent sparks and went spinning away from Mavra, the blade flashing where hit the ground.
A wave of exhaustion and dizziness swept over me, and I nearly fell. Even using a focus, the rune-etched cane, that effort had nearly been more than I could manage. I had to clench my teeth and hope I wouldn't simply pitch to one side. I was getting down to the bottom of the barrel, as far as magic went.


Grave Peril Chapter 30, Page 319-320