The Tainted Child - Death that Follows

You come to me seeking answers, yet who are you to make demands of me? You are more frail than a twig, and I would be happy to demonstrate this to you if you so desired. No? Now you ask me to use my great wisdom and call to Georgiy? Ah but first you must prove yourself to me. I smell foul blood on your blade, blood of the one you call Khorne, the skull taker. I have taken skulls too, though nature takes skulls in a different manner. Another foul spirit haunts these lands, the Ryzhnyi Khoziain. He is like this skull-taker god who you have faced. Take this skull and summon the Flying Death. Send him back to the spirit realm and then we can talk.

The Leshii has tasked you with facing a spirit of death that haunts the steppes of Kislev. Take the skull the Leshii has given you and pike it in the battlefield of Praag to summon the Ryzhnyi Khoziain. Kill the spirit and return to the Leshii when done.