Warbreaker

Warbreaker is the story of two sisters, who happen to be princesses, the God King one of them has to marry, the lesser god who doesnt like his job, and the immortal whos still trying to undo the mistakes he made hundreds of years ago. Their world is one in which those who die in glory, return as gods to live confined to a pantheon in Hallandrens capital city and where a power known as BioChromatic magic is based on an essence known as breath that can only be collected one unit at a time from individual people.