Wearing a ring of teleportation gives you teleportitis. These rings are often generated cursed. A cursed, price 200 ring is very likely teleportation. To be sure, you can uncurse it and put it on - if control + T gives "You cannot teleport at will" instead of "You don't know that spell", it is teleportation. This page is a . You could probably [ expand this page] should you wish to do so.