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.
The secret for immortality has been discovered by an eccentric wizard/mad scientist. Its found you need to reapply once a month. As people stop dying, and the birth rate increases exponentially, people are forced into homelessness, because of the need for food reamins the same, and food is not being produced fast enough to feed the undying population. The PCs have to find the creator and kill him, and destroy production, to save the world from undying, unending torture from hungryness.