Also I just realized if they're being placed under a mage for training that means Rost is gonna have like four students following him around. He can probably pawn Amaya off on another agent with powers more similar to hers though; probably Richard or Argus as they're in that same "conduit of raw maagical energy" sort of class. Mason, once his binding has been put up to the next level, can work with anyone since Rost won't have to constantly monitor it.