Lna the Prototype
idea by Assemdox

   The prototype was one of the few inventons made by the First Builders to be left untouched by the by the dark energies of the Maelstrom. The Prototype was one of the first inventions by the First Builders to utilize Imagination, making it very unstable. Its 'tail' shoots out imagination to get rid of excess imagination so it doesn't explode. It would be located on the Nexus Temple world or something like a "past" sequence where you go to the time when the First Builders were constructing the Temple. The taming puzzle would probaly be a small version of the Nexus Temple.   

link to real version