Mo saluted Agatha before reeling his balloon back in and sauntering for the window. This was actually a pretty cool experiment, even if his voice was chipmunky and he was freezing and a little lightheaded. He'd made a barometer today. And learned a new spell. And been called stellar at least once. Maybe more. Good day all around.

At the window, Mo released his balloon, which bobbed along twice before jerking to an abrupt halt. What the... oh. It was still tied to Mo's wrist, much like a small child would have at a theme park. Mo untangled the string, checked the security of his device, and then tossed the thing out the window again. It bobbed along merrily this time, slipping out of sight almost immediately as it rose up along the castle wall and into the cold air of the troposphere.

How cold was it? Very very cold. Mo stepped back from the window to let someone else take a turn as he fiddled with his indicator. He was glad it was the balloon out there, and the Mo was in here.