Many of them had different ways of being found. Thorn was supposed to be in Charlemagne's Vault...another Warmind. BadJuJu given by Toland after doing a certain feat. A small little thing that's been kind of intriguing me is that lone rock having light shined on it..when you enter Trial of Kabr. I'm guessing it was supposed to have either Kabr or one of his teammates laying on it.