"In that case, I hope you don't mind if we play it by ear," the Master purrs, his voice soft and dangerous. He leans over the sled and pats the Doctor on the shoulder, hard enough to be the exact opposite of reassuring.

"Don't worry, Doctor. When the moment comes, I promise you it'll be glorious." The Master smiles a bit to himself, thinking of River, by the lake, with the space suit. He can cook up something much more creative than that.

And then they're off, the Master walking just a bit ahead of the sled. Though it does hover, the rocky terrain means it isn't as smooth a ride as the Doctor might have hoped. Probably could have benefited from recalibration to be just a bit higher off the ground. Ah well. Live and learn.