King Posbrake dropped his smile, pressed his lips together, and gave Digdoug the strangest look, as if he had something to say but couldn’t say it here. There was a flash in his eyes of...sympathy? Or guilt, almost? Digdoug wasn’t great about reading people, especially the King.
King Posbrake sounds like he did
know for certain that DigDoug would have died if he hadn't been ordered out of the city, and he's demonstrated that he puts some thought into having useful magic working for him. Could he have had a Predictamancer tell him that? I imagine that Charlie could easily facilitate communication between a ruler and a barbarian caster who can't meet face to face. As Sky Schemer notes, the entire kingdom seems extremely competent. I wonder if he has a Findamancer pick the soldiers that he promotes to warlord?
Also, his rules-lawyering of the contract sounds like Signamancy, which much of the organisation of the side in general also sounds like. I wondered earlier in the story if Posbrake himself was secretly a Signamancer, but he was apparently Chief Warlord of Delkey, so I guess not.
Here's a crazy idea though - a side usually pops a caster in its first few warlords.. except Homekey promotes warlords from the ranks, so it hasn't had warlords to pop as casters instead. They pop courtiers
though, which have at least enough similarity to warlord units that both can be appointed to manage a city, and which Homekey probably wouldn't pay any attention to the movements of once they've popped. Homekey's courtiers include Chief Bucky, who sounds like an excellent candidate for a Chief Signamancer, and their contract with Delkey seems to only require them to tell them their production orders and total expenses - if a production order of a courtier can also pop as a caster, Delkey would only know that they intended
to pop a courtier and that they are paying more in expenses each turn than Delkey would expect from what units they expect them to have.
A Signamancer, a Findamancer and a Predictamancer all seem to use magic that could go unnoticed if you thought you knew a side had no casters at all. Does Homekey have all three, unknown to Delkey? With DigDoug's boost to the tower, four casters to hang spells on the tower and a Predictamancer to direct those spells, Homekey could likely take down a massive air assault.