NHF – new heroes for Heroes V 3.1.

I don't know what's feasible and what isn't. I'm not a programming expert.
Well, could we make this one?
Name: Viorhiz (Mage)
Biography: Viorhiz was a very good mage in the League of Silver Cities. But during Marquel's attack, he had no choice but to hide in the caves. A long time spent underground accustomed him to this environment, and now he moves through it faster than any other mage.
Skills: Logistics Basics, Scouting
Specialization: Dungeon Ranger - The Dungeon becomes a "native" type of terrain for the hero and his troops. In addition, he moves 1% faster for every two levels of the hero, starting from the first.

I'll write about the others later.

Added 7 minutes later
Turgoz (Necromancer)
Turgoz is possibly the best Water element mage. Any of his spells of this element deal more damage. In life, he was also connected with this magic. But after becoming a lich, he became even more powerful.
Specialization: Master of Cold - any damage dealt by the Water element is increased by 1% for each level of the hero.
Ice Bolt spell at the start.
Skills: Chaos Magic Basics, Master of Cold

P.S. I forgot to add that Viorhiz has the Stone Spikes spell on the strategy map