Shezel Sharpreaper found floating in The Mirror of Lyss, right in the center of Honor Hill and Kodash Bazaar, you can get to this boss from either town, there’s if you come from Honor hill before reaching Shezel Sharpreaper you will encounter Briahn the Chosen, first, and second if you leave from Kodash Bazaar.

Burried Treasure Alert! located under a tree near the bridge where Shezel Sharpreaper is found.

click for big map.