Magtail

Magtails were monsters that inhabited Dragon Roost Cavern and other cave-like dungeons. They are covered in a rugged exoskeleton, and can withstand the scorching heat of molten lava. They are also impervious to sword-based attacks, and can only be injured if struck in the eye. They also have a weakness towards water, in which they will curl up as they would do if they were struck in the eye with a sword. When Magtais are in a defensive position, they can be picked up and moved around.