This paper model is Krystal's Staff, a powerful weapon that belongs to Krystal, and was used by Fox McCloud in the action-adventure video game Star Fox Adventures during his expedition on Sauria, the papercraft is created by Mickey103.
The Staff is a long, purple, blue and gold scepter with a standard spear like head. In order for a person to use the weapon, the Staff must first accept the person itself. It is thought to have a razor sharp head due to Fox piercing King Redeye's skull, but it actually seems safe to hold, as seen when Fox uses the staff to pull Krystal up atop the Krazoa Palace.
Another interesting fact is that the head of the Staff can extend to the sides slightly for unknown reasons. It also appears to have the ability to shrink into a more compact, portable size. Fox can use the key end of the staff to unlock the hinges on the Item Boxes, scattered over Sauria. It also has the ability to produce a shield to protect the user. The Staff can also leave psychic messages for others to hear when separated from its original owner. [Source: wikia]
You can download this papercraft model template here: Star Fox Adventures - Krystal's Staff Free Papercraft Download