What is your favorite ultimate ability for that class?

I like the special ability of the Elves the most; this is considering that I always take Luck as a skill. :)
I also like the ability of the Dwarves - it's a relatively similar situation to the Elves. :)
It's not bad for the Mages - if every spell can be learned by anyone, then at a higher level... not everyone can. :)
The Warlocks are also good in their own way - they will hit harder. :)
The Necromancers are also doing well - I like good morale, and with bad morale of the enemy, the situation is the same as with good morale on my side. :)
It's okay for the Demons - you shouldn't wait by the sea... no, by the battlefield for the weather... no, for reinforcements. :)
They did a good job with the Barbarians - 500 points... that's like at least level 2 of Wrath. :)
The super ability of the Humans is designed for a narrow strike against a single enemy stack... but the strike will be significant. :)

By the way, what does the special ability of the Knights do?

The special ability of the Humans increases the damage of "Vigil" by 3 times. :)