lirael net spell

Sam was reaching for another arrow when Lirael thrust her hand past him, and she screamed a spell over the wind. A golden net flew from her fingers, spreading wider and wider as it crossed the intervening water. It met the boar-thing as it jumped, wrapping it in ropes of yellow red fire that dampened the thing's white-hot brilliance. Boar and net came plunging down, and both disappeared under the surface of the river, cutting off the terrible squealing. As the waters of the Ratterlin closed over the boar, an enormous plume of steam shot up for at least a hundred feet. When it subsided, there was no sign of either net or Free Magic creature [...]
"While that kind of construct can move across running water, it is destroyed by total immersion," explained Mogget. "Slowing it for even a moment was enough."

Lirael, Ch. 41, pg. 415-416