Quite an enchantress

Here is my attempt to rewrite the content to be unique and free of plagiarism while retaining the original word count:

I opened my eyes and saw the mage had turned away. I deftly rose to my feet, took the Norsanti blade Drevolan had lent me, approached her from behind, and brought Spellbreaker crashing toward the back of her head.

The impact was negligible, since she had some kind of shield around her; she flinched slightly and turned to face me. But the blow had weakened her shield. Before she could react, the point of the Norsanti dagger was at her throat. 

Drevolan and Thaleia were finishing off her last defenders, but Drevolan seemed unsteady and Thaleia's face was tense with concentration to maintain herself. Nila was aiding Ilyin to her feet. I had little time, so I spoke urgently.