As long as there has been magic in the universe, there have been magical artifacts. Enchanted rings, magical swords, crystals that imprison the soul of a powerful wizard, sometimes it seems these things come free with a box of Cracker Jacks. Do not meddle with them unless you are sure you know what you are doing -- and even then, they may suck out your soul just to make the artifact more powerful for the next poor sap to find it.
Artifacts In The GameEdit
(probably more, but that's what we remember at the moment)