Concepts of Koschei the Deathless by Nikolai Mamashev Posted on 01/13/201506/08/2017 by Konstantin Dmitriev Last weeks Nikolai Mamashev have been intensively researching the main villain of Morevna series – Koschei the Deathless. Here we would like to share some concepts made by Nikolai. Liked it? Take a second to support us on Patreon! Related Posted in Episode 3, Morevna, Morevna 3D.