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Regarding the contenders for victory, as I already wrote on the Nival forum, it's a realm of plagiarism.
Especially number 28 – The Lord of the Rings. I can only apologize to the author if this is Peter Jackson.
And also number 12. The prototype for this "masterpiece" is Prince Arthas. But even if we ignore that, this work has absolutely no relation to the heroes.
It seems that the jury consisted of marketers, not art connoisseurs. Which Larisa indirectly confirmed.
http://www.nival.com/contests/heroes1/art11.jpg This is, in my opinion, the best work. And among the contenders, number 26.