Tas!

	In desperation, I dropped my wand. I thrust my hand into my backpack, and my fingers closed round the piece of rope.
	I threw it and yelled the command word ‘TAS!’ – bind – just as Camper Boy’s bronze blade cut into my wrist.
...
	Camper Boy was sitting nearby in waist-deep water, looking dejected. My magic rope had wrapped round his sword arm, then lashed his hand to the side of his head. Unable to let go of his sword, he looked like he had a single reindeer antler sprouting next to his ear. He tugged at the rope with his free hand, but of course he couldn’t make any progress.