Ring of Transformer-ation

Dude, I want that!

This ring that bears tears the ancient sigil of the grand wizard known as Ottobhot. When activated, it can transform the wearer into a giant metal monster capable of great speed (on flat, open areas only). The ring can be activated once every twenty four hours.

In monster form, the beast can also comforably carry two people and their gear (three people uncomfortably with no gear provided one is willing to ride in the monster's "trunk") as they are only a two door. The transformation only lasts an hour and if any riders or equipment or trash remains inside the driver when the enchantment wears off, it can have fatal consequences to the wearer.

Those that have experienced it say that the transformation is very painful. An enchanted illustration of the process is below.