About Malowebi's far-calling devices, perhaps that kind of thing would let the Zeumi prince stay in contact with home.
Problems with that: Z isn't a sorcerer, so maybe he can't use the things OR it may be impossible for Zeum to reach him since he is on the move (if it works like far-calling and needs a compass).
If he has such devices, he may notice when Sorweel's little bag distorts the signal. THUS, Zsoronga becomes convinced that HE is the narindar and that Yatwer was using Sorweel to position Z.
Whatever happens, I do hope we see some really smart people exploiting the potential of sorcerous artifacts more in TUC. At Dagliash, Kellhus passes around magic lightning crossbows and bashrags swing flaming hammers.