The Blood Code (Book 4): A Historical Progression Fantasy Adventure Series

The next book of the series!
The Blood Code (Book 5):

I know how to cultivate useful relationships. A pact with the Altar of the Primal Elements supplemented my deal with Muscadine. Duty leads me north, where the secrets of two worlds lie hidden beneath the ice.

And now, in Scandinavia, a claimant to my Altar of the Primal Elements has suddenly appeared. No matter—plenty of hardier souls have vanished in the swamps of my domain.

I am Mikhail Komarin and I still heed the Code.