Hero of Lukomorye IV is an expansion by Zarista Games. It's intended for level 70 characters.

Grab your weapons and spells! The war is over but Kozney the Deathless refuses to give up his chance for the throne. While winter chokes Lukomorye in its icy grip, Kozney has summoned strong forces to defeat the Tzar's loyal army and navy. It's time to face the Deathless once again. This time it must be Death to the Deathless!