CL Werner
Wardens of the Everqueen
Realgate Wars (series) part 5

The War of Life rages on, as Torglug the Despised and the forces of Nurgle seek to destroy the Everqueen. But with their new Stormcast allies, the beleagured sylvaneth at last have a hope of victory...
Age of Sigmar
novel

Also in:
Mighty Battles
The Realmgate Wars: Volume 1
The Realmgate Wars: the Novels