The Activity Club and the Ice Dungeon Challenge

Ed grips the shield with one hand, and when the fairy is within range, he slams it into her, sending the ball of light crashing into the snow in front of him. The fairy reverts to her human form, and the look in her eyes tells Ed that she is very dazed. She won't be able to act for the next few moments. Ed has the chance to finish this. What should he do?