I could hardly consider this being fitting for a spell or even a system since I do not see any relevant underlying code beneath it.
The name is somewhat misleading, as from what I read, the title implies a model viewer-esque mechanic in revealing models, not unearthing hidden models.​

However, this resource could be placed either in the miscellaneous forum, or tutorial forum for modding purposes, which deems it
inappropriate for this forum.​

The triggers used by the map must be visible in the editor. I cannot see such triggers and hence cannot approve this. If it relies on a generated map script file then you could import such resulting script as a vJASS trigger with minimal modification.​

Fairly neat little map to view models in game. Nice use of terrain based UI for controls.

Being able to browse models in a folder view or search for path strings could be a useful feature.

Being able to alter model pitch, roll and yaw might be useful. Alternatively one could alter the camera around a static model to achieve a similar effect without changing properties of the actual model.

Possibly special effects could be used instead of units to avoid generating a lot of object editor data. Recent patches added many natives allowing more control over them.

With 1.31 it might be possible to swap this to using a full screen UI rather than terrain UI. This would greatly improve usability and polish.​