That's why she's not trying to melt her way through. No, nothing so subtle here. When the spell is finished, Cho walks back a few step and draws her sword. This is the first time she's had the blade out in front of her two companions, and if either is curious, they may note that the symbols etched along both sides share some qualities with the spells she's been drawing all day so far.

She warns them both to stand clear, and runs at the wall, plunging her blade into the center of the spell, pouring magic through the metal, amplified by the gold and bonded by the symbols that now glow with magic. She hangs for a moment, breath caught, and then the wall practically explodes, breaking apart into huge chunks of ice that go flying.

One chunk, half the size of Cho, slams her back into another ice wall. It's just bad luck, horrible one in a billion kind of luck, that the configuration of the spell left on that chunk presses against a part of her personal shield in exactly the wrong spot. Cho can undo her own magic, and she just has. She's got no protection as she's crushed between the boulder of ice and the wall of the maze. It hurts like hell.

But not enough to stop her. "Come on," she croaks. "Before it closes up again."