Battle of the Hogwarts Houses

Four of you have been selected from each House to participate in a wonderful, first-time ever event. The Battle of the Hogwarts Houses. It's a bit like the Interhouse Cup, but not as many people get to participate, and they have way more fun. Challenges have been laid out before you, in which you and your team must prevail. But with each new challenge, there might be even less of you to help you compete.

The last House standing is the winner. Can you rise to the challenge?