A Warrior hero from the Dungeon faction? That's absurd...

Leadership?
Defense?

Great, of course – relying on skills with a 2% chance, yes.

Here, it's about the possibility; the details are secondary.
Still, having these skills, a Warlock-Warrior is viable.

Well, against a Necromancer, this isn't the best idea. Although... trying a rush in the first turn... with Fury, you can attack the Necromancer for more than one turn, as they don't have much to kill with. Dragons are immune if they are black.
But Leto will have a chance for luck, defense, attack... BD.
By the way, you can even outmaneuver Necromancers with a Berserker...