Which great class ability do you dislike?

Yeah, I played for a month without even thinking about super abilities. Besides, not all castles make the pursuit of super abilities worthwhile. You can incorrectly develop a hero and lose, or you can get what you need and win!

Hmm, you know, it's not about the abilities, but about the fact that even knowing what you need, the randomizer won't let you get it. I, for example, when I was playing through the campaign as a mage, couldn't get the ability, even though I tried my best...