"Conveniently, 'a few hours' is also the time it will take to get the ship back in working order. It would be a good idea to wear a radiation suit if you're going to work with thorium. Pure thorium is radioactive and catches on fire easily, you would be sick for a long time if you inhaled any even if it didn't kill you. We can skip it completely if you want, it's not even as useful as deutritium. Drinking deutritium could also hurt you, but not nearly as gratuitiously as thorium can. And just to be clear on the deal - you transmute some fuel and I'll take you as far away as the fuel will take us. And if you want, tech explanations for sorcery explanations once we're away from Mr. Yellow."

They arrive at the workshop. He produces a metal canister and a plastic bottle. "The deutritium is inside the metal thing. The bottle has water. Twist them to open them. I'll be working on the engines, call me if you need anything and I can hear you from anywhere in the ship."