A Cavern of Black Ice — J.V. Jones

In Spire Vanis, an uncrowned ruler steals magic from tortured captives, while an innocent girl is haunted by nightmares of ice. On the frigid steppes, two brothers find their kinsmen slain by swords that draw no blood. At a remote homestead, a hardened warrior leaves his family to follow a raven's summons.

And in a deadly wilderness where nature and the gods have no mercy, two young fugitives will confront the unfolding of an apocalyptic prophecy....