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The ideal hero is a Knight with upgraded tactics and a Priest with upgraded life magic. Then a couple of angels can take down a couple of Death Knights:D. And it will be the first turn, which allows you to take down the hero. For example: we click "wait" on the angels. At the end of the turn, the angels move and attack the hero. He dies and is resurrected. Thanks to the high initiative, the first turn goes to the angels, and they finish off the hero. The outcome of the battle is known.
P.S.: After carefully studying life, I came to the conclusion that Crusaders will be more useful than Monks in battles with neutrals and against another player:D.