The main mistake is choosing Shakkurakat, as this hero claims the title of the worst on large maps. This is because wyverns already have a lot of health (they are level 6 troops), and the bonus turns out to be extremely small.
Also, there seems to be one skill in education that increases the gain or loss of rage by 1.5 times. This skill probably doesn't work correctly, as the rage loss is simply insane.
And who can you recommend against Haghesh? From the Orc race?
