Angor understood most of what Sunders said. So something that had the "smell" of Nightmare Realm on it could be used as a seed and guided them to the original spot in the plane where the seed was found.
More importantly, why did Sunders say his wound on his soul was a seed?
When he took his talent test in Padt Manor, he entered the strange place as a soul, not his body? Then how did Sunders spill his blood?
Angor revealed his questions, and Sunders smiled at him as he answered, "It has something to do with your talent as well. Let's leave the question for later. When we get into the Nightmare Realm, I need to confirm something before telling you that.
"Now, I'll tell you about our destination for this journey."
Sunders took out a transparent crystal ball and placed it on the desk. He stroked the surface of the object, and a light shone from it.
Sunders signaled Angor to look inside the ball.