Major artifacts are unique items, only one of each such item exists at any given time in the world of Tellene. Each has a long history, and the tales told of them are fantastic, and usually troubled with misconceptions. Major artifacts are secretive thing, their current whereabouts are normally unknown, and are waiting to be found once again. Heroes and villains are ready to unleash these items upon the world.
A major artifact should never be introduced into a campaign without careful consideration. These items are the most potent magic items, capable of altering the balance of any campaign. These items are made by deities, demigods, and ultra-powerful beings from alternate planes and there means of creation are long gone from the world.
Unlike other magic items, major artifacts cannot be easily destroyed. Each normally has only a single, specific means of destruction. The method of destruction is very specific, often just as fantastic as the item and its history, an example of one is “crushed under the heels of a demigod.”