Here's a little quirk of our grand old game, EverQuest. If you stand around long enough beside this NPC and watch the hut near him, a mob will walk by and "open" the hut like a door. It basically rotates to one side like a door being opened. You can't click on it to activate it yourself, but NPCs pathing by will "open" it themselves. I live for weird stuff like this. So glad I spotted it.
This Erudian will tell you the story of Miragul and thus over time will add more power to your Adventurer's Stone.
The Vah Shir camp leader in Everfrost Peaks, Teria Grinntli, will tell you to meet him after you've talked to her six or seven times (you can get a new bit of information from her for each 2 successful wins in Miragul's Menagerie). Before that Mr. Iyeaql won't share his knowledge with you.