I could summon a city spirit, he thought, a great form city spirit, and send it after them. In his mind’s eye he saw the noisome garbage strewn around the street shifting as though a wind had suddenly whipped through the city, drawing together, coalescing into a huge, amorphous shape. A shape that shambled off after the retreating trolls. He could hear their screams, their pleas for mercy. And then silence. I could do it, he thought again.