Onyx Hook

The Onyx Hook (Japanese: めのうのつりばり Agate Fish Hook) is an item that appears in Mother. It is first received after beating the The Fish in Magicant's Crystal Cavern. It can be used anywhere to teleport straight to Magicant. However, it can't be used to leave Magicant, which forces Ninten to go through the Crystal Cavern again to leave Magicant before he or Ana learns Teleport. It is considered a very useful item, despite being optional. When EVE is in the party, this item can't be used. Whenever Ninten uses an XX Stone to teleport to Magicant, exiting the Crystal Cavern will take him to a different XX stone.