NHF – new heroes for Heroes V 3.1.

Biography of Shagrat:
When Shagrat was young, his father died in war, and his mother was taken captive. Before his death, his father made him swear to avenge his family and continue his father's work. Winning the war and saving his mother is his main goal, and with each battle won, his desire for victory grows exponentially. And any passerby will be very unlucky if they meet Shagrat, who carries the blood of his defeated enemies on his blade.
I came up with it myself :)
And, by the way, I would change the name of the ability to "Will to Win."