Armour
Following a drastic change in the magical ether that surrounds Akanbar, magic users across the land have now found that they are unable to tap into its benefits when encased in armour. Swift to adapt to this change however, new uses for both pyromancy and tempestry have been discovered that can vastly reduce physical damage in much the same way as armour.
At the same time as these events, Assassins have also discovered that many of their more agile abilities are in fact quite hard to achieve in full platemail, and in realising this have found that they can no longer achieve these same feats. Fortunately for them, they have also discovered that their agility is so great that they actually have less need for armour than other professions, easily able to survive in leather armour alone.