NHF – new heroes for Heroes V 3.1.

then like that
Sigrun began his military career after the death of King Tolgar, when the chieftains needed commanders to lead battles on multiple fronts. Sigrun is valued for his unusual tactics and dark magic, which he possesses; before a battle, he spends time in ancient rituals performing curses that no servant of light can dispel; this is the secret to his success on the front lines.

Added 4 minutes later
I would give him the first icon; in my opinion, the second is a battle mage, and the third is a scout.