Near the Castle there is a Griffin Conservatory, an external dwelling of earth elementals, and three paths to secondary towns.
On the first path, I collected skeletons; on 117, even with the market in the secondary town, there wasn't enough money for birds (on the last turn I cleared a dwarf settlement and two chests with a luck-buffed unit, but everything turned out to be minimum), so I didn't swap.
Straker grabbed earth; on the second path there were many cranes, but I also added more necromancers with him and Septienne. I set up a circus of retraining from Grini and passing oil to Straker, losing a turn in the process (I only managed to break the main building, but was a couple of seconds short for the buyout).
On the third path, using oil, I took three Griffin Conservatories for 5 angels (two more were found in the secondary town), went into a treasure zone and there, losing an angel, took a level-1 Dragon Utopia; they gave me a +3 necklace and a hat. Then I went to another treasure zone to take a Griffin Conservatory, where the opponent was. In the Castle secondary town, I placed angels; Straker with good stats runs into the same treasure zone as the opponent, but then comes the surrender.
Thanks for the game!