"A power bank, basically." That's something relatively easy for him to get his head around. A ship's power can be regenerated, but isn't unlimited, especially if you're using it faster than the dilithium crystals can generate it. "You mentioned earlier that everyone in Mundus can use it to a degree." He's still not clear is Mundus is the word for the whole world in which Tamriel exists, or if it's their term for the universe, or something like that, but it hardly matters at the moment. "Do people have a fixed amount of magicka, or is it something you can build up, like working out to bulk up muscle?"