The prosthetic leg was good enough for everyday use. But Scrael wouldn't be able to stay away from fighting in the future. It was in her nature. So the leg would be useless if it couldn't withstand her magic and the speeds she moved at when fighting.
Following Toz's suggestion, Scrael carefully roused her mana and filled her body with it. Fly-sized sparks of lightning traveled through her fur as she surged with lightning.
Scrael included the prosthetic leg in the process and sent some mana to it. There weren't any problems at first. The mana flowed through the leg, not as smoothly as her real leg, but since it was only the first prototype, it couldn't be helped.
However, as Scrael pushed more mana into the leg, it burst. The metal couldn't handle the pressure of Scrael's mana when the circulation was so poor.