" Kaldar picked up a rock and tossed it into the clearing. It landed between two wards. A green stem shot out of the ground, and a hail of needle-thin thorns peppered the soil, striking sparks off the rock. "You got any money on you?" "No." Kaldar grimaced. "What do you have?" William made a mental inventory of some twenty-odd items he'd pulled out of the Mirror's bag of tricks and hid in his clothes this morning. Not much he could part with. "A knife," he said. "Fine. I'll bet my knife against your knife that I can walk through there unharmed. "