The Guild
The Guild is a small floating city in the clouds. Its inhabitants control the technical knowledge on Prester, doling it out to the other nations as they see fit.
In the war between Anatoray and Disith the Guild acts as a sort of referee, ostensibly making sure both sides conform to agreed rules of engagement. However, their actions towards enforcing those rules seem to betray more of a concern for their own agenda than any anxiety for the countries involved in the conflict.