Got an Elshimo Marble off of one. Its a No-drop, Lore item, or EX whatever its called in this game. You cant trade it, and can only have 1. No idea what its for. Mob is about lvl. 30-35.
Elshimo Marble is the item for a quest in which the reward is a scroll of Teleport-Yhoator. To initiate the quest, talk with the missionary near the gate in Kazham.