While they were dealing with this, Luna and Artemis were developing a way of creating remote control. Using the dark puppet control skills that Luna possessed together with the girls' notions of magical engineering.
Just as Ryan had imagined, they were having problems with magic's energy maintenance ratio.
Walking over to the table, Ryan picked up a piece of paper and a pen. Then he began to draw the diagram he had observed with Viper while they were studying in the Berohog library.
"I want you to think of it like a bus card. They don't have a very high charge of their own, the spell is controlled by the card reader which recognizes the device and charges it energetically. The transmission is complex, but we can make a sort of bridge between the points where we're going to place the puppets for the time being," he concluded.