Oh, regarding the infamous Bogus the Troll --
In one recent game, I used Wind Ride and brought Bogus to one of my castles. Irritatingly but not all that surprisingly, he beat the province defense. However, I then realized that since he wasn't going anywhere, and my air mage was still safely inside, I could stage a tournament of my own by wind-riding enemy commanders who would then be forced to fight Bogus in one-on-one duels
, and the enemy AI wouldn't necessarily even know who did the Wind Ride since it wasn't my army they'd fight, but an independent. Weird.