Irah - Rise of the Red Hand
Arcanos is a magocracy on the eastern side of the continent of Irah. It controls the planes between the Amiros and Black Forests. It holds little land west of the Cerulean River save for the area around the city of Arcanos itself.
They enforce their dominion over all things magical within every nation besides Northwood. This requires all nations to record all magical artifacts their members possess, and send all their magical youths. What they do with these children and information is unknown.