I found this rather cute bug where I defeated an Urkan that was on a transport ship, but failed to defeat all his reinforcements, so he went feral. However, when he was feral his stats remained as "transport ship" so he was absurdly easy to beat. He stays as a ship if you capture him, but returns to normal if you turn him into an army. Also saves attached, but it should be fairly easy to reproduce.

Saltadores - Turno 85_2.savSaltadores - Turno 85.sav