Intriguing. It would seem that Caden receives energy from the ambient trauma of battle. That should prove useful for tracking Caden's DNA. If it's still in this city increased violent activity may be able to guide us to its location. Win 5 PvP battles to energize Caden's DNA so that I may sense it!
I've found the sample - it's in the Science Facility! The Headmistress of the Facility must be hiding the sample. See if you can persuade her to part with it!