i did a search for tibrinn embers and sap sheen staff found nothing if this is already known i am sorry..
Zone - Rathe Mountains
NPC - Tibrinn Ember
Quest -
http://everquest.allakhazam.com/db/quest.html?quest=42
Reward - Sap Sheen Staff ( was originally or still is not sure right click from inventory ) not sure if or when it was changed alla says its a proc but i know it wasnt at least...other people have put comments of it not being as well.
I turned in the Slime staff and the mithril belt and he just gave them back also gives no Dialog...sucks too because i spend over 24 hours camping those items