namshiel cage

I lifted my left hand just as the Denarian crouched and vomited out a spinning cloud of black threads that came whirling through the air in dozens of tiny, spiraling arcs. I brought up my shield, but none of the threads actually came down to touch me-they landed all around me instead, in a nearly perfect circle.
And an instant later my shield stuttered and shorted out. I still had the energy for it-I hadn't been cut off. But somehow the Denarian's weird spell had disrupted the magic as it left my body. I tried to throw another bolt of force at him, and got to feel supremely silly, waving my staff around to absolutely zero effect.
"Interruptions," the Denarian said in an odd accent. "Always the interruptions."
His left hand returned to rummaging in his bag, while his mortal eyes went back to the now-scattered remnants of the spell, evidently dismissing my existence. The green eyes remained focused on me, though, and darkness suddenly gathered around the forefinger of his upraised right hand.
Time slowed down.
Dark light leapt toward me.
Sheer defiance made me step forward, trying to brush past the little spinning columns of shadow that surrounded me, only to find them as solid as steel bars, and colder than a yeti's fridge. I threw my magic against those bars to no avail as a shaft of dark lightning streaked toward my heart.


Small Favor Chapter 30, Page 251-252