Hammer and Bolter Season 1 Episode 10

Plague Song

When the Death Guard champion Morior Dermatis finds his warband's ambitions thwarted, the sorcerer Ephisis takes matters into his own hands and decides on a new approach. Realising that Grandfather Nurgle's gifts are not bound by mortal conceits of space and time, Ephisis plans to unleash a plague unlike any the Imperium has suffered before.