Bloody Knowledge

You find on the magus's mangled corpse a slimey journal. It appears a troll tried to eat it and spat it back up. You open the cover to find out more about the owner. A letter slips out from Calvius Blisterbranch to Puvlar Hrendj. It appears this was Puvlar Hrendj. Hrendj was tasked with collecting the blood of chaos breeds for experimenting. Blisterbranch will likely want these blood samples, though time is not on your side. They won't last indefiniately.

Take the Blood Samples and Hrendj's Journal to Calvius Blisterbranch, who based on the return address on the letter is from the Apex district of the Inevitable City. How cultured of the Inevitable City to have addresses. Cultured, and convenient!