This was Benjamin’s first attempt at identifying priests in disguise. In the past, priests had never needed to be in disguise, based on their clothing and demeanor you could tell they were one. Due to the the fact that Benjamin was not experienced in this field, he was not at all confident of his judgement.
But to say that they were three mages that had successfully opened their dimensions of consciousness would be a real stretch. The kind of training required was far too specialised; only through sheer coincidence could this be genuinely possible.
Did this world even have three mages that were not have an affinity to water elemental energy, and have yet to try learning any water magic at all? It’s possible but extremely unlikely.
Benjamin still had to make sure that his conclusions were correct. If there were really three priests in disguise inside the border of Icor, that would mean trouble.