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So, in Phryn, the gravedigger Bokor sells me the map with information to find treasure that the mysterious man got from necromancy. What is the treasure that "I need good eyesight to find," and is there really a time limit?
*Edit* Wait I think I found it. Is it the dark energy book?

I don't remember this one very well, sorry.

Yeah, it's the "Book of Dark Sun Energy". You can find it below a big rock.