The Dragon Carved Egg, is a perfect crystal egg, the size of a goose egg, etched with images of a pride of dragons. It grants the one holding it immunity from Dragon. This item is another Legacy of Corvus the Mad. In fact, his signature is written in tiny script in the edtchings.
The Crystal Sphere of the Throne is another expensive knick knack kept in the royal jewels by the force of tradition. Unbeknownst to all but the Ruler and the Heir, The Crystal Sphere is an immortal intelligent item giving advice to the Ruler and Heir.
The Grand Sword of the Warlord is a weapon of destiny. It has been wielded by most of the greatest warrior leaders in History. It is their compaion. It is also, unknown to most, a legacy of Corvus the Mad.
The Orb of Corvin is a powerful, though unwieldy, magik item in the hands of a magik user. It allows one to view the world, see where trouble is brewing, and cast spells on the area being viewed as if you were there. Unknown to most, this legacy of Corvus, has its own agenda.
The Dark Eye is an immortal intelligence bound in a mystic staff, a legacy of Corvus. From its hidden place, it influence the world for its own purposes and the purposes of its Dark God.
One of the camels in the caravan trips over a dark rock protruding from the sandy dunes. The poor animal has broken its leg and cannot continue. A cacaphony ensues as the animal suffers and the caravan train overseers complain passionately as they redistribute the animal's load across the caravan. (Let's just hope none of the PC's was riding this camel, shall we?)
As the camel is put out of its misery and the camel is skewered over a campfire - waste nothing! - someone takes a minute to inspect the root cause of all the trouble. To their surprise, the upturned rock is worked stone. Some frantic digging may excavate the bottom half of a gorgeously worked1 obelisk, and maybe even the small square forum below; but a more rigorous exploration of the surrounding dunes reveals a buried tomb doorway on each side of the forum.