Skulduggery's head tilted to the side - one of the few expressions of emotion he had outside of the tone of his voice. "There's no particular difficulty in demonstrating. I'd just rather not. Fire and earth tend to be either noisy or akin to setting off a flare, which isn't helpful when you're trying to pass through a forest without encountering anything. Unless you'd like to fight off a group of hostile creatures we've probably never seen before...?"

The suggestion was a perfectly level one, if made slightly sardonically.