This starcraft paper model is designed by a korean designer "ddong5678". The Banshee is a strong Air-to-Ground unit that is built from a Starport with a Tech Lab add-on.
The Banshee has a number of common uses. Used early on in any matchup, they can catch an opponent off guard and allow for uninterrupted harassment, especially if Cloak has been researched. For this reason, hiding two Starports can be devastating for an opponent if left unscouted. When supported by Vikings, Banshees can be used to form a very powerful air army that can be very hard for Protoss to deal with.
You can download this starcraft papercraft from here: StarCraft II Papercraft - Banshee (Cinematic Version) Free Download