Sierra peered up at the board and quickly read the spells that had already been suggested. Trying to hurry, she quickly raised her hand again...and then jerked it back down when she saw her suggestion under the Gryffindor section. BAHHH. She reread the list again and finally came up with something new.

"What about the Momentum-reversing spell?" she suggested, raising her hand. "This way you can stop your opponent and force them back."