After identifying and securing a sample of the residual magical energy from the arsonist, Mandra devised a simple spell that localized any nearby magical energy that matched. It would let them follow the arsonist's trace, and if the trail went cold, the spell would find the arsonist as long as they were close enough.
They didn't have time to waste, so after making sure that Zach wasn't too affected by Mandra pushing the limit, they set off.
It was in times like these that Zach missed Nessa's Millipede. It was fast, stable, and comfortable to ride. It was much better than having to walk or be carried by one of his maids. It was also less taxing than putting himself, Visla, and Nora on a floating barrier and carrying them while his maids ran next to them.